Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-22 19:01:37 +00:00
Code Issues Packages Projects Releases Wiki Activity
1,058,443 Commits 1 Branch 865 Tags 6.5 GiB
0e6078c3c6
Commit Graph

8756 Commits

Author SHA1 Message Date
Linus Torvalds
ad44518aff drm fixes for 5.16-rc2 
scheduler:
 - two refcounting fixes
 
 cma-helper:
 - use correct free path for noncoherent
 
 efifb:
 - probing fix
 
 amdgpu:
 - Better debugging info for SMU msgs
 - Better error reporting when adding IP blocks
 - Fix UVD powergating regression on CZ
 - Clock reporting fix for navi1x
 - OLED panel backlight fix
 - Fix scaling on VGA/DVI for non-DC display code
 - Fix GLFCLK handling for RGP on some APUs
 - fix potential memory leak
 
 amdkfd:
 - GPU reset fix
 
 i915:
 - return error handling fix
 - ADL-P display fix
 - TGL DSI display clocks fix
 
 nouveau:
 - infoframe corruption fix
 
 sun4i:
 - Kconfig fix
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmGXNjMACgkQDHTzWXnE
 hr4/Zg/+PU8HkPqSlZ3/zyHrJNWP7XotDwaVF1fEWT1GBXBQlWojkmaxG3KqXYxs
 9ysXsE6kDPm0dqYl6l+z2ZlF8WCnpHbi+fKjJdlHLqcYRefeLwGopDYA/9EFFmLc
 +Pf7Z7aS8N1VNuFVQToZTG8FHjzkJaXqrMYYymwDYPr7Qf9Qh8tNuAytnyOJxK+1
 jw0zCfdVw3/nm0kH4sqxkejMpEXmQQl+cgRFlYQugM1zKU2JeWAX/2n6YQTxaTH3
 tvgV5zN5+43FSnNcW4qedzu38hVAwRxQckjD0jsJ93c35XAbeLvrh4BS83alCo6/
 wuzemB0KaquwQn8JhyQJvNQMQs/Fqx9kT7eXPiPxeOYhvFEVfuyUP1ciqfmkhu6m
 Yu8ApxDaO6dn+hIcWGzWu/cKzOPromCOSdH/9Bud765w7bVOfD5sJ4uw9EP9uYlB
 LP6pzM5FtPJRDJtADO58xLhEwB2aNeVsi4k3I333njFh7HJL+AF/+Hsz3H9ylP3z
 pp+uygBbp/DjF7Ko6hNbDwk+MH7HPg1tJhq/fosahOtpQlvN89sG+l0EYj/y/S3b
 FTNYERUBgu+ZFCK5grjAqA7e7T2IFSiAaHLD+p6YNvDBNHumEjNoM4lZcWoPN2JU
 HeGLDXit4U775+3YdLHlY4rvua8MzmYG9b47uyX19vYTpXJOY5k=
 =KvQt
 -----END PGP SIGNATURE-----

Merge tag 'drm-fixes-2021-11-19' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This week's fixes, pretty quiet, about right for rc2. amdgpu is the
  bulk of them but the scheduler ones have been reported in a few places
  I think.

  Otherwise just some minor i915 fixes and a few other scattered around:

  scheduler:
   - two refcounting fixes

  cma-helper:
   - use correct free path for noncoherent

  efifb:
   - probing fix

  amdgpu:
   - Better debugging info for SMU msgs
   - Better error reporting when adding IP blocks
   - Fix UVD powergating regression on CZ
   - Clock reporting fix for navi1x
   - OLED panel backlight fix
   - Fix scaling on VGA/DVI for non-DC display code
   - Fix GLFCLK handling for RGP on some APUs
   - fix potential memory leak

  amdkfd:
   - GPU reset fix

  i915:
   - return error handling fix
   - ADL-P display fix
   - TGL DSI display clocks fix

  nouveau:
   - infoframe corruption fix

  sun4i:
   - Kconfig fix"

* tag 'drm-fixes-2021-11-19' of git://anongit.freedesktop.org/drm/drm:
  drm/amd/amdgpu: fix potential memleak
  drm/amd/amdkfd: Fix kernel panic when reset failed and been triggered again
  drm/amd/pm: add GFXCLK/SCLK clocks level print support for APUs
  drm/amdgpu: fix set scaling mode Full/Full aspect/Center not works on vga and dvi connectors
  drm/amd/display: Fix OLED brightness control on eDP
  drm/amd/pm: Remove artificial freq level on Navi1x
  drm/amd/pm: avoid duplicate powergate/ungate setting
  drm/amdgpu: add error print when failing to add IP block(v2)
  drm/amd/pm: Enhanced reporting also for a stuck command
  drm/i915/guc: fix NULL vs IS_ERR() checking
  drm/i915/dsi/xelpd: Fix the bit mask for wakeup GB
  Revert "drm/i915/tgl/dsi: Gate the ddi clocks after pll mapping"
  fbdev: Prevent probing generic drivers if a FB is already registered
  drm/scheduler: fix drm_sched_job_add_implicit_dependencies harder
  drm/scheduler: fix drm_sched_job_add_implicit_dependencies
  drm/sun4i: fix unmet dependency on RESET_CONTROLLER for PHY_SUN6I_MIPI_DPHY
  drm/cma-helper: Release non-coherent memory with dma_free_noncoherent()
  drm/nouveau: hdmigv100.c: fix corrupted HDMI Vendor InfoFrame
 2021-11-19 10:50:11 -08:00
Sven Schnelle
bec05f33eb parisc/sticon: fix reverse colors 
sticon_build_attr() checked the reverse argument and flipped
background and foreground color, but returned the non-reverse
value afterwards. Fix this and also add two local variables
for foreground and background color to make the code easier
to read.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Helge Deller <deller@gmx.de>
 2021-11-17 11:04:02 +01:00
Javier Martinez Canillas
fb561bf9ab
fbdev: Prevent probing generic drivers if a FB is already registered 
The efifb and simplefb drivers just render to a pre-allocated frame buffer
and rely on the display hardware being initialized before the kernel boots.

But if another driver already probed correctly and registered a fbdev, the
generic drivers shouldn't be probed since an actual driver for the display
hardware is already present.

This is more likely to occur after commit d391c58271 ("drivers/firmware:
move x86 Generic System Framebuffers support") since the "efi-framebuffer"
and "simple-framebuffer" platform devices are registered at a later time.

Link: https://lore.kernel.org/r/20211110200253.rfudkt3edbd3nsyj@lahvuun/
Fixes: d391c58271 ("drivers/firmware: move x86 Generic System Framebuffers support")
Reported-by: Ilya Trukhanov <lahvuun@gmail.com>
Cc: <stable@vger.kernel.org> # 5.15.x
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: Ilya Trukhanov <lahvuun@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211111115757.1351045-1-javierm@redhat.com
 2021-11-17 10:15:05 +01:00
Linus Torvalds
304ac8032d drm next/fixes for 5.16-rc1 
bridge:
 - HPD improvments for lt9611uxc
 - eDP aux-bus support for ps8640
 - LVDS data-mapping selection support
 
 ttm:
 - remove huge page functionality (needs reworking)
 - fix a race condition during BO eviction
 
 panels:
 - add some new panels
 
 fbdev:
 - fix double-free
 - remove unused scrolling acceleration
 - CONFIG_FB dep improvements
 
 locking:
 - improve contended locking logging
 - naming collision fix
 
 dma-buf:
 - add dma_resv_for_each_fence iterator
 - fix fence refcounting bug
 - name locking fixesA
 
 prime:
 - fix object references during mmap
 
 nouveau:
 - various code style changes
 - refcount fix
 - device removal fixes
 - protect client list with a mutex
 - fix CE0 address calculation
 
 i915:
 - DP rates related fixes
 - Revert disabling dual eDP that was causing state readout problems
 - put the cdclk vtables in const data
 - Fix DVO port type for older platforms
 - Fix blankscreen by turning DP++ TMDS output buffers on encoder->shutdown
 - CCS FBs related fixes
 - Fix recursive lock in GuC submission
 - Revert guc_id from i915_request tracepoint
 - Build fix around dmabuf
 
 amdgpu:
 - GPU reset fix
 - Aldebaran fix
 - Yellow Carp fixes
 - DCN2.1 DMCUB fix
 - IOMMU regression fix for Picasso
 - DSC display fixes
 - BPC display calculation fixes
 - Other misc display fixes
 - Don't allow partial copy from user for DC debugfs
 - SRIOV fixes
 - GFX9 CSB pin count fix
 - Various IP version check fixes
 - DP 2.0 fixes
 - Limit DCN1 MPO fix to DCN1
 
 amdkfd:
 - SVM fixes
 - Fix gfx version for renoir
 - Reset fixes
 
 udl:
 - timeout fix
 
 imx:
 - circular locking fix
 
 virtio:
 - NULL ptr deref fix
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmGN3YwACgkQDHTzWXnE
 hr6aZQ/+Pobf1VE7V3wPUcopxccJYmgBvG/uY8EDyjA8qaxHs2pQqGN2IooOGxr6
 F8G1N94Hem/PCDn3T8JI2Tqw5z4sy4UwLahEWISurFCen1IMAfA7hYfutp9X3O7X
 8h7b+PgkvVruEAHF7z0kqnWGPHmcro29cIHNkXVRjnJuz+Gmn1XRfo6Jj65n6D7u
 NfMeU4/lWRR3767oJQzTqyAYtGxsKaZT3/tBD5WggZBzEKC7hqhAl8EUoOLWwojo
 fDqwiEpLXpraPRIQH8trkXVHhzPeLAmG916WwS8JG3CEk9mUQ+I7Jshhd8cw+bsQ
 XPuk3OBfU9mtuiGgNzrLP3xXJZs/QN3EkpKZWLefTnJY+C4BgiP2RifTnghmwV31
 6/7Pr83CX/cn3BRd7r0xaeBZYvVYBZmwoZcsZFJBM8SVjd/ofKUfAmCzZZKheio2
 5qa6bj9DQoyjEoFAULh23plcX6hvATGP7wzfRTnJ9AlAJ0KyEjVJ3r0qE6jHMDc/
 uzcTAnKIWCxt9kSgE5qwLQtxLBaBpr/iOniZbCqGkPjiZeMzqP/ug1AKVP7kk39x
 FxZVT8ZOKk8Xt4iLZx8jmHi2KKheXYZi9LqieoTrJd44qMXDOmR9DCtQX9FZuWJS
 EJAlMj6sCowAZdODPZMVpoMc3Gti9nZ2Fpu7mLrRcMk1gKfjKwo=
 =qMNk
 -----END PGP SIGNATURE-----

Merge tag 'drm-next-2021-11-12' of git://anongit.freedesktop.org/drm/drm

Pull more drm updates from Dave Airlie:
 "I missed a drm-misc-next pull for the main pull last week. It wasn't
  that major and isn't the bulk of this at all. This has a bunch of
  fixes all over, a lot for amdgpu and i915.

  bridge:
   - HPD improvments for lt9611uxc
   - eDP aux-bus support for ps8640
   - LVDS data-mapping selection support

  ttm:
   - remove huge page functionality (needs reworking)
   - fix a race condition during BO eviction

  panels:
   - add some new panels

  fbdev:
   - fix double-free
   - remove unused scrolling acceleration
   - CONFIG_FB dep improvements

  locking:
   - improve contended locking logging
   - naming collision fix

  dma-buf:
   - add dma_resv_for_each_fence iterator
   - fix fence refcounting bug
   - name locking fixesA

  prime:
   - fix object references during mmap

  nouveau:
   - various code style changes
   - refcount fix
   - device removal fixes
   - protect client list with a mutex
   - fix CE0 address calculation

  i915:
   - DP rates related fixes
   - Revert disabling dual eDP that was causing state readout problems
   - put the cdclk vtables in const data
   - Fix DVO port type for older platforms
   - Fix blankscreen by turning DP++ TMDS output buffers on encoder->shutdown
   - CCS FBs related fixes
   - Fix recursive lock in GuC submission
   - Revert guc_id from i915_request tracepoint
   - Build fix around dmabuf

  amdgpu:
   - GPU reset fix
   - Aldebaran fix
   - Yellow Carp fixes
   - DCN2.1 DMCUB fix
   - IOMMU regression fix for Picasso
   - DSC display fixes
   - BPC display calculation fixes
   - Other misc display fixes
   - Don't allow partial copy from user for DC debugfs
   - SRIOV fixes
   - GFX9 CSB pin count fix
   - Various IP version check fixes
   - DP 2.0 fixes
   - Limit DCN1 MPO fix to DCN1

  amdkfd:
   - SVM fixes
   - Fix gfx version for renoir
   - Reset fixes

  udl:
   - timeout fix

  imx:
   - circular locking fix

  virtio:
   - NULL ptr deref fix"

* tag 'drm-next-2021-11-12' of git://anongit.freedesktop.org/drm/drm: (126 commits)
  drm/ttm: Double check mem_type of BO while eviction
  drm/amdgpu: add missed support for UVD IP_VERSION(3, 0, 64)
  drm/amdgpu: drop jpeg IP initialization in SRIOV case
  drm/amd/display: reject both non-zero src_x and src_y only for DCN1x
  drm/amd/display: Add callbacks for DMUB HPD IRQ notifications
  drm/amd/display: Don't lock connection_mutex for DMUB HPD
  drm/amd/display: Add comment where CONFIG_DRM_AMD_DC_DCN macro ends
  drm/amdkfd: Fix retry fault drain race conditions
  drm/amdkfd: lower the VAs base offset to 8KB
  drm/amd/display: fix exit from amdgpu_dm_atomic_check() abruptly
  drm/amd/amdgpu: fix the kfd pre_reset sequence in sriov
  drm/amdgpu: fix uvd crash on Polaris12 during driver unloading
  drm/i915/adlp/fb: Prevent the mapping of redundant trailing padding NULL pages
  drm/i915/fb: Fix rounding error in subsampled plane size calculation
  drm/i915/hdmi: Turn DP++ TMDS output buffers back on in encoder->shutdown()
  drm/locking: fix __stack_depot_* name conflict
  drm/virtio: Fix NULL dereference error in virtio_gpu_poll
  drm/amdgpu: fix SI handling in amdgpu_device_asic_has_dc_support()
  drm/amdgpu: Fix dangling kfd_bo pointer for shared BOs
  drm/amd/amdkfd: Don't sent command to HWS on kfd reset
  ...
 2021-11-12 12:11:07 -08:00
Linus Torvalds
d2f38a3c65 - Fix-ups 
- Standardise *_exit() and *_remove() return values; ili9320, vgg2432a4
 
  - Bug Fixes
    - Do not override maximum brightness; backlight
    - Propagate errors from get_brightness(); backlight
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEdrbJNaO+IJqU8IdIUa+KL4f8d2EFAmGJTUMACgkQUa+KL4f8
 d2FQ+w/+PMsuCZwyf1tcIfUTZJA5y5n8vnsLLzIkkjLlnaNbtD+y85gZzLWa0CgC
 H3nyKrcV/rbaTC5mAM+meKcmDxfbCGYDL7bleIZ2aQd1YtmvGnmspGnNwl8vHTjA
 DN8eagNssW+V1i/uPbKN76RRaOMleIwm/zjA4TZATMs6Q1MddDeJN4g5mIqbcd1i
 k5aE2Jc9ZqPuE18w7I5gOuibGo8If1IroeTJ1V2/npJJhlWAA+nJzH2bGG7I1OQm
 4AjrJ+n8twKhAbaFhi3IYcQhpbGACGo/HZ3SGS3sPjlqo2+/vdrsTqjCkiQREfZ1
 5QmOHk1/X0bFTcO5u6rhldq3qbS3qg7DwRzTb8LmY3bcPVHj5JD8jJcbnHgzXkOz
 UncS0Y5sMImn+BKDVVvsosMH45XnZtngyYEEbgpzMI3JXGf9LxilxCVTZ8rrfogF
 TYbM+i1bzs3Tvl3mKaecSqvsKJgJUVNKFOSb0oGlXd9WaEb3WmTgFi6CfATeokif
 buTdPGt2rD2WcanNFV8A32z3byuvS8C7EXRkprhbUVjkO//rOam7HgR8SBP6rkRo
 IYs2CUAviawfiCypGPUCjBz6JwgcG9uQrdpFBrWEp26dkx+m/MP5OvkuwgjIPNrI
 4Bu12kU1mTRrR9CenJP1Ka/1fKQbQaFsNxiKM3C7SYOnt90XMRs=
 =PbxD
 -----END PGP SIGNATURE-----

Merge tag 'backlight-next-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Standardise *_exit() and *_remove() return values in ili9320 and
     vgg2432a4

  Bug Fixes:
   - Do not override maximum brightness
   - Propagate errors from get_brightness()"

* tag 'backlight-next-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  video: backlight: ili9320: Make ili9320_remove() return void
  backlight: Propagate errors from get_brightness()
  video: backlight: Drop maximum brightness override for brightness zero
 2021-11-08 12:21:28 -08:00
Linus Torvalds
5c0b0c676a powerpc updates for 5.16 
- Enable STRICT_KERNEL_RWX for Freescale 85xx platforms.
 
  - Activate CONFIG_STRICT_KERNEL_RWX by default, while still allowing it to be disabled.
 
  - Add support for out-of-line static calls on 32-bit.
 
  - Fix oopses doing bpf-to-bpf calls when STRICT_KERNEL_RWX is enabled.
 
  - Fix boot hangs on e5500 due to stale value in ESR passed to do_page_fault().
 
  - Fix several bugs on pseries in handling of device tree cache information for hotplugged
    CPUs, and/or during partition migration.
 
  - Various other small features and fixes.
 
 Thanks to: Alexey Kardashevskiy, Alistair Popple, Anatolij Gustschin, Andrew Donnellan,
 Athira Rajeev, Bixuan Cui, Bjorn Helgaas, Cédric Le Goater, Christophe Leroy, Daniel
 Axtens, Daniel Henrique Barboza, Denis Kirjanov, Fabiano Rosas, Frederic Barrat, Gustavo
 A. R. Silva, Hari Bathini, Jacques de Laval, Joel Stanley, Kai Song, Kajol Jain, Laurent
 Vivier, Leonardo Bras, Madhavan Srinivasan, Nathan Chancellor, Nathan Lynch, Naveen N.
 Rao, Nicholas Piggin, Nick Desaulniers, Niklas Schnelle, Oliver O'Halloran, Rob Herring,
 Russell Currey, Srikar Dronamraju, Stan Johnson, Tyrel Datwyler, Uwe Kleine-König, Vasant
 Hegde, Wan Jiabing, Xiaoming Ni,
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmGFDPoTHG1wZUBlbGxl
 cm1hbi5pZC5hdQAKCRBR6+o8yOGlgNbsEACVczMVwMBEny5a7W1tqq1bnY9RFVw3
 K+/rE7/FpSLX+RrwgoMkmqfPvfyc9WISVLlIQDKz4XhkBjaXv0+Y4OMsymuDCbxL
 Qk7F1ff22UfLmPjjJk39gHJ8QZQqZk3wmFu2QzTO4yBZbz2SqqXFLxwyoLpZ0LJ8
 pdGl51+bIsTkDJzrdkhX9X4AKS/fYyjbQxq5u7FS89ZCCs+KvzjLcDRo0GZYaOK/
 hgDBa60DCCszL/9yjbh0ANZxmM2Z3+6AXkvAAXrtXzIGk4JzenZfiV+VEzmq8Tt0
 UpWSsUEe7VgykMR3MTrL9G8op70PpKX6OMUPegJq4iRQ24h4mpFCK4oV9OMKJqpF
 ifN9NO2ZZKOz1ke4l7Xe8SEHLX7rq5U/P7INh3AsKYNYwo6HkJhSPxiCBWUTlnZ3
 OYoZ7czyO4gMPHWP92z4CoSiTYVBFuyhYexRcnQskg60TIwbr+lMXziRyPRGI8b6
 taf2rD8eAiyUJnvkFUsyAHtYHpkSkuMeiVqY2CDQdh2SdtIFgwKzB2RjFL0gzaBZ
 XP9RWD+HernGQAJSlIk7cVthont3JHklcKk+ohhDbsWzPeUJcz6t4ChtgRq0x4q4
 Hpes1lsVfXpyxj5ouBK/E/t+diwPvBLM0dCcarQJE6ExgMzBC/C7Br7jCSgyVJA2
 VhtcZaCYh+vRlQ==
 =f7HE
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Enable STRICT_KERNEL_RWX for Freescale 85xx platforms.

 - Activate CONFIG_STRICT_KERNEL_RWX by default, while still allowing it
   to be disabled.

 - Add support for out-of-line static calls on 32-bit.

 - Fix oopses doing bpf-to-bpf calls when STRICT_KERNEL_RWX is enabled.

 - Fix boot hangs on e5500 due to stale value in ESR passed to
   do_page_fault().

 - Fix several bugs on pseries in handling of device tree cache
   information for hotplugged CPUs, and/or during partition migration.

 - Various other small features and fixes.

Thanks to Alexey Kardashevskiy, Alistair Popple, Anatolij Gustschin,
Andrew Donnellan, Athira Rajeev, Bixuan Cui, Bjorn Helgaas, Cédric Le
Goater, Christophe Leroy, Daniel Axtens, Daniel Henrique Barboza, Denis
Kirjanov, Fabiano Rosas, Frederic Barrat, Gustavo A.  R.  Silva, Hari
Bathini, Jacques de Laval, Joel Stanley, Kai Song, Kajol Jain, Laurent
Vivier, Leonardo Bras, Madhavan Srinivasan, Nathan Chancellor, Nathan
Lynch, Naveen N.  Rao, Nicholas Piggin, Nick Desaulniers, Niklas
Schnelle, Oliver O'Halloran, Rob Herring, Russell Currey, Srikar
Dronamraju, Stan Johnson, Tyrel Datwyler, Uwe Kleine-König, Vasant
Hegde, Wan Jiabing, and Xiaoming Ni,

* tag 'powerpc-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (73 commits)
  powerpc/8xx: Fix Oops with STRICT_KERNEL_RWX without DEBUG_RODATA_TEST
  powerpc/32e: Ignore ESR in instruction storage interrupt handler
  powerpc/powernv/prd: Unregister OPAL_MSG_PRD2 notifier during module unload
  powerpc: Don't provide __kernel_map_pages() without ARCH_SUPPORTS_DEBUG_PAGEALLOC
  MAINTAINERS: Update powerpc KVM entry
  powerpc/xmon: fix task state output
  powerpc/44x/fsp2: add missing of_node_put
  powerpc/dcr: Use cmplwi instead of 3-argument cmpli
  KVM: PPC: Tick accounting should defer vtime accounting 'til after IRQ handling
  powerpc/security: Use a mutex for interrupt exit code patching
  powerpc/83xx/mpc8349emitx: Make mcu_gpiochip_remove() return void
  powerpc/fsl_booke: Fix setting of exec flag when setting TLBCAMs
  powerpc/book3e: Fix set_memory_x() and set_memory_nx()
  powerpc/nohash: Fix __ptep_set_access_flags() and ptep_set_wrprotect()
  powerpc/bpf: Fix write protecting JIT code
  selftests/powerpc: Use date instead of EPOCHSECONDS in mitigation-patching.sh
  powerpc/64s/interrupt: Fix check_return_regs_valid() false positive
  powerpc/boot: Set LC_ALL=C in wrapper script
  powerpc/64s: Default to 64K pages for 64 bit book3s
  Revert "powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC"
  ...
 2021-11-05 08:15:46 -07:00
Dave Airlie
5275a99e35 drm-misc-next for 5.16: 
UAPI Changes:
 
 Cross-subsystem Changes:
 
 Core Changes:
   - fbdev: Fix double-free, Remove unused scrolling acceleration
   - locking: improve logging for contented locks without backoff
   - dma-buf: Add dma_resv_for_each_fence iterator, and conversion of
     users
 
 Driver Changes:
   - nouveau: Various code style improvements
   - bridge: HPD improvements for lt9611uxc, eDP aux-bus support for
     ps8640, lvds-codec data-mapping selection support
   - panels: Vivax TPC-9150, Innolux G070Y2-T02, LOGIC Technologies
     LTTD800480070-L2RT, Sharp LS060T1SX01,
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCYWgczwAKCRDj7w1vZxhR
 xTwlAP9uzjFJqG22inn1fchteZMTvJG0JxLjdO9l6ORUMzsj/AD/SNC1MYAuUv3Y
 /McjFrd1C2yVvKfdmI+21SsY2q95sAE=
 =AwQ7
 -----END PGP SIGNATURE-----

Merge tag 'drm-misc-next-2021-10-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.16:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - fbdev: Fix double-free, Remove unused scrolling acceleration
  - locking: improve logging for contented locks without backoff
  - dma-buf: Add dma_resv_for_each_fence iterator, and conversion of
    users

Driver Changes:
  - nouveau: Various code style improvements
  - bridge: HPD improvements for lt9611uxc, eDP aux-bus support for
    ps8640, lvds-codec data-mapping selection support
  - panels: Vivax TPC-9150, Innolux G070Y2-T02, LOGIC Technologies
    LTTD800480070-L2RT, Sharp LS060T1SX01,

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211014120452.2wicnt6hobu3kbwb@gilmour
 2021-11-05 13:50:15 +10:00
Dave Airlie
970eae1560 Linux 5.15-rc7 
-----BEGIN PGP SIGNATURE-----
 
 iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmF298ceHHRvcnZhbGRz
 QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGIJYH/1rsEFQQ6caeQdy1
 z9eFIe48DNM4l7bFk+qEj2UAbzPdahVJ299Mg5fW0n2CDemOc9/n0b9TxQ37YObi
 mOzu0xwJVupIxkyFMPQSSc2q8aLm67NSpJy08DsmaNses5hSvu8x15RPHLQTybjt
 SwtKns+jpCq79P1GWbrB5e5UkLb0VNoxNp4L1U4pMrYGcEkJUXbaxNY2V/JcXdM7
 Vtn+qN0T/J6V6QVftv0t8Ecj3bjEnmL3kZHaTaNg3dGeKRpCGyHc5lcBQ0cNFG6t
 vjZ9VbuhBzGI3TN2tHH5hpA1UXo7HPBBCwQqxF1jeGLGHULikYwZ3TAPWqL3QZqC
 9cxr9SY=
 =p75d
 -----END PGP SIGNATURE-----

BackMerge tag 'v5.15-rc7' into drm-next

The msm next tree is based on rc3, so let's just backmerge rc7 before pulling it in.

Signed-off-by: Dave Airlie <airlied@redhat.com>
 2021-10-28 14:59:38 +10:00
Uwe Kleine-König
3976e974df video: backlight: ili9320: Make ili9320_remove() return void 
Up to now ili9320_remove() returns zero unconditionally. Make it return
void instead which makes it easier to see in the callers that there is
no error to handle.

Also the return value of spi remove callbacks is ignored anyway.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211019120927.3822792-1-u.kleine-koenig@pengutronix.de
 2021-10-20 15:13:59 +01:00
Claudio Suarez
b3ec8cdf45 fbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list) 
Scroll acceleration is disabled in fbcon by hard-wiring
p->scrollmode = SCROLL_REDRAW. Remove the obsolete code in fbcon.c
and fbdev/core/

Signed-off-by: Claudio Suarez <cssk@net-c.es>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YVXTYqszZix9TxjJ@gineta.localdomain
 2021-10-13 15:29:23 +02:00
Dave Airlie
c7c774fe09 Cross-subsystem Changes: 
- fbdev/efifb: Release PCI device's runtime PM ref during FB destr\
 oy (Imre)
 
 i915 Core Driver Changes:
 - Only access SFC_DONE in media when not fused off for graphics 12 and newer.
 - Double Memory latency values from pcode for DG2 (Matt Roper)
 - ADL-S PCI ID update (Tejas)
 - New DG1 PCI ID (Jose)
 - Fix regression with uncore refactoring (Dave)
 
 i915 Display Changes:
 - ADL-P display (XE_LPD) fixes and updates (Ankit, Jani, Matt Roper, Anusham, Jose, Imre, Vandita)
 - DG2 display fixes (Ankit, Jani)
 - Expand PCH_CNP tweaked display workaround to all newer displays (Anshuman)
 - General display simplifications and clean-ups (Jani, Swati, Jose, Ville)
 - PSR Clean-ups, dropping support for BDW/HSD and enable PSR2 selective fetch by default (Jose, Gwan-gyeong)
 - Nuke ORIGIN_GTT (Jose)
 - Return proper DPRX link training result (Lee)
 - FBC related refactor and fixes (Ville)
 - Yet another attempt to solve the fast+narrow vs slow+wide eDP link training (Kai-Heng)
 - DP 2.0 preparation work (Jani)
 - Silence __iomem sparse warn (Ville)
 - Clean up DPLL stuff (Ville)
 - Fix various dp/edp max rates (Matt Atwood, Animesh, Jani)
 - Remove VBT ddi_port_info caching (Jani)
 - DSI driver improvements (Lee)
 - HDCP fixes (Juston)
 - Associate ACPI connector nodes with connector entries (Heikki)
 - Add support for out-of-bound hotplug events (Hans)
 - VESA vendor block and drm/i915 MSO use of it (Jani)
 - Fixes for bigjoiner (Ville)
 - Update memory bandwidth parameters (RK)
 - DMC related fixes (Chris, Jose)
 - HDR related fixes and improvements (Tejas)
 - g4x/vlv/chv CxSR/wm fixes/cleanups (Ville)
 - Use BIOS provided value for RKL Audio's HDA link (Kai-Heng)
 - Fix the dsc check while selecting min_cdclk (Vandita)
 - Split and constify vtable (Dave)
 - Add ww context to intel_dpt_pin (Maarten)
 - Fix bdb version check (Lukasz)
 - DP per-lane drive settings prep work and other DP fixes (Ville)
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEbSBwaO7dZQkcLOKj+mJfZA7rE8oFAmFbTsgACgkQ+mJfZA7r
 E8onwQf/QLOtlY0Al7oVEQrWu7I6vzajyQz6oGbj3rTNMG6m/sDNCgKZaNmxRnQo
 O+YjccMW/dnsFhSqckm8JzQUrHPSmDExBu+HGSkxNTod7UYVEEd0MYETnBShF4hv
 vwoPgRuzny5+jEDuBv9GBD/6d2su9Hl/OWTQ/YPjdJKyIWLjKhbxET7FExlV6MtG
 I80OyJSaV2L4EAgPT5TBSAXvzeUFAevw2O9aOSI+rTtAOfXI7TkB7E38Tjzc7uSd
 YN9/43NXoJYVB9yhVXKJgK90COMSREFv/lUupSXqN/W5lOD4xLg0W6vD6kKX5Z4T
 IrfvR6T5Cz+OfwSLUlzmWeO+l9VcqQ==
 =9tCx
 -----END PGP SIGNATURE-----

Merge tag 'drm-intel-next-2021-10-04' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

Cross-subsystem Changes:
- fbdev/efifb: Release PCI device's runtime PM ref during FB destr\
oy (Imre)

i915 Core Driver Changes:
- Only access SFC_DONE in media when not fused off for graphics 12 and newer.
- Double Memory latency values from pcode for DG2 (Matt Roper)
- ADL-S PCI ID update (Tejas)
- New DG1 PCI ID (Jose)
- Fix regression with uncore refactoring (Dave)

i915 Display Changes:
- ADL-P display (XE_LPD) fixes and updates (Ankit, Jani, Matt Roper, Anusham, Jose, Imre, Vandita)
- DG2 display fixes (Ankit, Jani)
- Expand PCH_CNP tweaked display workaround to all newer displays (Anshuman)
- General display simplifications and clean-ups (Jani, Swati, Jose, Ville)
- PSR Clean-ups, dropping support for BDW/HSD and enable PSR2 selective fetch by default (Jose, Gwan-gyeong)
- Nuke ORIGIN_GTT (Jose)
- Return proper DPRX link training result (Lee)
- FBC related refactor and fixes (Ville)
- Yet another attempt to solve the fast+narrow vs slow+wide eDP link training (Kai-Heng)
- DP 2.0 preparation work (Jani)
- Silence __iomem sparse warn (Ville)
- Clean up DPLL stuff (Ville)
- Fix various dp/edp max rates (Matt Atwood, Animesh, Jani)
- Remove VBT ddi_port_info caching (Jani)
- DSI driver improvements (Lee)
- HDCP fixes (Juston)
- Associate ACPI connector nodes with connector entries (Heikki)
- Add support for out-of-bound hotplug events (Hans)
- VESA vendor block and drm/i915 MSO use of it (Jani)
- Fixes for bigjoiner (Ville)
- Update memory bandwidth parameters (RK)
- DMC related fixes (Chris, Jose)
- HDR related fixes and improvements (Tejas)
- g4x/vlv/chv CxSR/wm fixes/cleanups (Ville)
- Use BIOS provided value for RKL Audio's HDA link (Kai-Heng)
- Fix the dsc check while selecting min_cdclk (Vandita)
- Split and constify vtable (Dave)
- Add ww context to intel_dpt_pin (Maarten)
- Fix bdb version check (Lukasz)
- DP per-lane drive settings prep work and other DP fixes (Ville)

Signed-off-by: Dave Airlie <airlied@redhat.com>

# gpg: Signature made Tue 05 Oct 2021 04:58:16 AEST
# gpg:                using RSA key 6D207068EEDD65091C2CE2A3FA625F640EEB13CA
# gpg: Good signature from "Rodrigo Vivi <rodrigo.vivi@intel.com>" [unknown]
# gpg:                 aka "Rodrigo Vivi <rodrigo.vivi@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6D20 7068 EEDD 6509 1C2C  E2A3 FA62 5F64 0EEB 13CA
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YVtPk6llsxBFiw7W@intel.com
 2021-10-11 16:53:57 +10:00
Zheyu Ma
2c0c19b681 fbdev: fbmem: Fix double free of 'fb_info->pixmap.addr' 
savagefb and some other drivers call kfree to free 'info->pixmap.addr'
even after calling unregister_framebuffer, which may cause double free.

Fix this by setting 'fb_info->pixmap.addr' to NULL after kfree in
unregister_framebuffer.

The following log reveals it:

[   37.318872] BUG: KASAN: double-free or invalid-free in kfree+0x13e/0x290
[   37.319369]
[   37.320803] Call Trace:
[   37.320992]  dump_stack_lvl+0xa8/0xd1
[   37.321274]  print_address_description+0x87/0x3b0
[   37.321632]  ? kfree+0x13e/0x290
[   37.321879]  ? kfree+0x13e/0x290
[   37.322126]  ? kfree+0x13e/0x290
[   37.322374]  kasan_report_invalid_free+0x58/0x90
[   37.322724]  ____kasan_slab_free+0x123/0x140
[   37.323049]  __kasan_slab_free+0x11/0x20
[   37.323347]  slab_free_freelist_hook+0x81/0x150
[   37.323689]  ? savagefb_remove+0xa1/0xc0 [savagefb]
[   37.324066]  kfree+0x13e/0x290
[   37.324304]  savagefb_remove+0xa1/0xc0 [savagefb]
[   37.324655]  pci_device_remove+0xa9/0x250
[   37.324959]  ? pci_device_probe+0x7d0/0x7d0
[   37.325273]  device_release_driver_internal+0x4f7/0x7a0
[   37.325666]  driver_detach+0x1e8/0x2c0
[   37.325952]  bus_remove_driver+0x134/0x290
[   37.326262]  ? sysfs_remove_groups+0x97/0xb0
[   37.326584]  driver_unregister+0x77/0xa0
[   37.326883]  pci_unregister_driver+0x2c/0x1c0
[   37.336124]
[   37.336245] Allocated by task 5465:
[   37.336507]  ____kasan_kmalloc+0xb5/0xe0
[   37.336801]  __kasan_kmalloc+0x9/0x10
[   37.337069]  kmem_cache_alloc_trace+0x12b/0x220
[   37.337405]  register_framebuffer+0x3f3/0xa00
[   37.337731]  foo_register_framebuffer+0x3b/0x50 [savagefb]
[   37.338136]
[   37.338255] Freed by task 5475:
[   37.338492]  kasan_set_track+0x3d/0x70
[   37.338774]  kasan_set_free_info+0x23/0x40
[   37.339081]  ____kasan_slab_free+0x10b/0x140
[   37.339399]  __kasan_slab_free+0x11/0x20
[   37.339694]  slab_free_freelist_hook+0x81/0x150
[   37.340034]  kfree+0x13e/0x290
[   37.340267]  do_unregister_framebuffer+0x21c/0x3d0
[   37.340624]  unregister_framebuffer+0x23/0x40
[   37.340950]  savagefb_remove+0x45/0xc0 [savagefb]
[   37.341302]  pci_device_remove+0xa9/0x250
[   37.341603]  device_release_driver_internal+0x4f7/0x7a0
[   37.341990]  driver_detach+0x1e8/0x2c0
[   37.342272]  bus_remove_driver+0x134/0x290
[   37.342577]  driver_unregister+0x77/0xa0
[   37.342873]  pci_unregister_driver+0x2c/0x1c0
[   37.343196]  cleanup_module+0x15/0x1c [savagefb]
[   37.343543]  __se_sys_delete_module+0x398/0x490
[   37.343881]  __x64_sys_delete_module+0x56/0x60
[   37.344221]  do_syscall_64+0x4d/0xc0
[   37.344492]  entry_SYSCALL_64_after_hwframe+0x44/0xae

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1633848148-29747-1-git-send-email-zheyuma97@gmail.com
 2021-10-10 09:50:32 +02:00
Christophe Leroy
f2719b26ae video: fbdev: chipsfb: use memset_io() instead of memset() 
While investigating a lockup at startup on Powerbook 3400C, it was
identified that the fbdev driver generates alignment exception at
startup:

  --- interrupt: 600 at memset+0x60/0xc0
  NIP:  c0021414 LR: c03fc49c CTR: 00007fff
  REGS: ca021c10 TRAP: 0600   Tainted: G        W          (5.14.2-pmac-00727-g12a41fa69492)
  MSR:  00009032 <EE,ME,IR,DR,RI>  CR: 44008442  XER: 20000100
  DAR: cab80020 DSISR: 00017c07
  GPR00: 00000007 ca021cd0 c14412e0 cab80000 00000000 00100000 cab8001c 00000004
  GPR08: 00100000 00007fff 00000000 00000000 84008442 00000000 c0006fb4 00000000
  GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00100000
  GPR24: 00000000 81800000 00000320 c15fa400 c14d1878 00000000 c14d1800 c094e19c
  NIP [c0021414] memset+0x60/0xc0
  LR [c03fc49c] chipsfb_pci_init+0x160/0x580
  --- interrupt: 600
  [ca021cd0] [c03fc46c] chipsfb_pci_init+0x130/0x580 (unreliable)
  [ca021d20] [c03a3a70] pci_device_probe+0xf8/0x1b8
  [ca021d50] [c043d584] really_probe.part.0+0xac/0x388
  [ca021d70] [c043d914] __driver_probe_device+0xb4/0x170
  [ca021d90] [c043da18] driver_probe_device+0x48/0x144
  [ca021dc0] [c043e318] __driver_attach+0x11c/0x1c4
  [ca021de0] [c043ad30] bus_for_each_dev+0x88/0xf0
  [ca021e10] [c043c724] bus_add_driver+0x190/0x22c
  [ca021e40] [c043ee94] driver_register+0x9c/0x170
  [ca021e60] [c0006c28] do_one_initcall+0x54/0x1ec
  [ca021ed0] [c08246e4] kernel_init_freeable+0x1c0/0x270
  [ca021f10] [c0006fdc] kernel_init+0x28/0x11c
  [ca021f30] [c0017148] ret_from_kernel_thread+0x14/0x1c
  Instruction dump:
  7d4601a4 39490777 7d4701a4 39490888 7d4801a4 39490999 7d4901a4 39290aaa
  7d2a01a4 4c00012c 4bfffe88 0fe00000 <4bfffe80> 9421fff0 38210010 48001970

This is due to 'dcbz' instruction being used on non-cached memory.
'dcbz' instruction is used by memset() to zeroize a complete
cacheline at once, and memset() is not expected to be used on non
cached memory.

When performing a 'sparse' check on fbdev driver, it also appears
that the use of memset() is unexpected:

  drivers/video/fbdev/chipsfb.c:334:17: warning: incorrect type in argument 1 (different address spaces)
  drivers/video/fbdev/chipsfb.c:334:17:    expected void *
  drivers/video/fbdev/chipsfb.c:334:17:    got char [noderef] __iomem *screen_base
  drivers/video/fbdev/chipsfb.c:334:15: warning: memset with byte count of 1048576

Use fb_memset() instead of memset(). fb_memset() is defined as
memset_io() for powerpc.

Fixes: 8c8709334c ("[PATCH] ppc32: Remove CONFIG_PMAC_PBOOK")
Reported-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/884a54f1e5cb774c1d9b4db780209bee5d4f6718.1631712563.git.christophe.leroy@csgroup.eu
 2021-10-09 00:15:59 +11:00
Mark Brown
11b8e2bb98 video: fbdev: gbefb: Only instantiate device when built for IP32 
The gbefb driver not only registers a driver but also the device for that
driver. This is all well and good when run on the IP32 machines that are
supported by the driver but since the driver supports building with
COMPILE_TEST we might also be building on other platforms which do not have
this hardware and will crash instantiating the driver. Add an IS_ENABLED()
check so we compile out the device registration if we don't have the Kconfig
option for the machine enabled.

Fixes: 552ccf6b25 ("video: fbdev: gbefb: add COMPILE_TEST support")
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210921212102.30803-1-broonie@kernel.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
 2021-10-06 11:12:28 +02:00
Arnd Bergmann
ec7cc3f74b fbdev: simplefb: fix Kconfig dependencies 
Configurations with both CONFIG_FB_SIMPLE=y and CONFIG_DRM_SIMPLEDRM=m
are allowed by Kconfig because the 'depends on !DRM_SIMPLEDRM' dependency
does not disallow FB_SIMPLE as long as SIMPLEDRM is not built-in. This
can however result in a build failure when cfb_fillrect() etc are then
also in loadable modules:

x86_64-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x1f8): undefined reference to `cfb_fillrect'
x86_64-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x200): undefined reference to `cfb_copyarea'
x86_64-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x208): undefined reference to `cfb_imageblit'

To work around this, change FB_SIMPLE to be a 'tristate' symbol,
which still allows both to be =m together, but not one of them to
be =y if the other one is =m. If a distro kernel picks this
configuration, it can be determined by local policy which of
the two modules gets loaded. The 'of_chosen' export is needed
as this is the first loadable module referencing it.

Alternatively, the Kconfig dependency could be changed to
'depends on DRM_SIMPLEDRM=n', which would forbid the configuration
with both drivers.

Fixes: 11e8f5fd22 ("drm: Add simpledrm driver")
Acked-by: Rob Herring <robh@kernel.org> # for drivers/of/
Link: https://lore.kernel.org/all/20210721151839.2484245-1-arnd@kernel.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch> # fbdev support
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Borislav Petkov <bp@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org> # v5.14+
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210928145243.1098064-1-arnd@kernel.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
 2021-10-06 11:12:28 +02:00
Thomas Weißschuh
563edf85ce backlight: Propagate errors from get_brightness() 
backlight.h documents "struct backlight_ops->get_brightness()" to return
a negative errno on failure.

So far these errors have not been handled in the backlight core.
This leads to negative values being exposed through sysfs although only
positive values are documented to be reported.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2021-09-23 10:48:00 +01:00
Marek Vasut
33a5471f8d video: backlight: Drop maximum brightness override for brightness zero 
The note in c2adda27d2 ("video: backlight: Add of_find_backlight helper
in backlight.c") says that gpio-backlight uses brightness as power state.
This has been fixed since in ec665b756e ("backlight: gpio-backlight:
Correct initial power state handling") and other backlight drivers do not
require this workaround. Drop the workaround.

This fixes the case where e.g. pwm-backlight can perfectly well be set to
brightness 0 on boot in DT, which without this patch leads to the display
brightness to be max instead of off.

Fixes: c2adda27d2 ("video: backlight: Add of_find_backlight helper in backlight.c")
Cc: <stable@vger.kernel.org> # 5.4+
Cc: <stable@vger.kernel.org> # 4.19.x: ec665b756e: backlight: gpio-backlight: Correct initial power state handling
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2021-09-22 08:32:48 +01:00
Linus Torvalds
cd395d529f tgafb: clarify dependencies 
The TGA boards were based on the DECchip 21030 PCI graphics accelerator
used mainly for alpha, and existed in a TURBOchannel (TC) version for
the DECstation (MIPS) workstations.

However, the config option for the TGA code is a bit confused, and says

	depends on FB && (ALPHA || TC)

because people didn't really want to enable the option for random PCI
environments, so the "ALPHA" stands in for that case (while the TC case
is then the MIPS DECstation case).

So that config dependency is kind of a mixture of architecture and bus
choices.  But it's incorrect, in that there were non-PCI-based alpha
hardware, and then the driver just causes warnings:

  drivers/video/fbdev/tgafb.c:1532:13: error: ‘tgafb_unregister’ defined but not used [-Werror=unused-function]
   1532 | static void tgafb_unregister(struct device *dev)
        |             ^~~~~~~~~~~~~~~~
  drivers/video/fbdev/tgafb.c:1387:12: error: ‘tgafb_register’ defined but not used [-Werror=unused-function]
   1387 | static int tgafb_register(struct device *dev)
        |            ^~~~~~~~~~~~~~

so let's make the config option dependencies a bit more explict:

	depends on FB
	depends on PCI || TC
	depends on ALPHA || TC

where that first "FB" is the software configuration dependency, the
second "PCI || TC" is the hardware bus dependency, while that final
"ALPHA || TC" dependency is the "don't bother asking except for these
situations.

We could make that third case have "COMPILE_TEST" as an option, and mark
the register/unregister functions as __maybe_unused, but I'm not sure
it's really worth it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-09-18 11:15:01 -07:00
Rodrigo Vivi
d1b803f4ca Merge drm/drm-next into drm-intel-next 
Catch-up on 5.15-rc1 and sync with drm-intel-gt-next
to prepare the PXP topic branch.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
 2021-09-15 10:12:51 -04:00
Linus Torvalds
a668acb8f0 drm fixes for 5.15-rc1 
ttm:
 - Fix ttm_bo_move_memcpy() when ttm_resource is subclassed.
 - Fix ttm deadlock if target BO isn't idle
 - ttm build fix
 - ttm docs fix
 
 dma-buf:
 - config option fixes
 
 fbdev:
 - limit resolutions to avoid int overflow
 
 i915:
 - stddef change.
 
 amdgpu:
 - Misc cleanups, typo fixes
 - EEPROM fix
 - Add some new PCI IDs
 - Scatter/Gather display support for Yellow Carp
 - PCIe DPM fix for RKL platforms
 - RAS fix
 
 amdkfd:
 - SVM fix
 
 vc4:
 - static function fix
 
 mgag200:
 - fix uninit var
 
 panfrost:
 - lock_region fixes
 
  - Make some dma-buf config options depend on DMA_SHARED_BUFFER.
     - Handle multiplication overflow of fbdev xres/yres in the core.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmE6/HkACgkQDHTzWXnE
 hr4Edw/+PTYtJHSZZbcT/Avcdif1KpEWuBfhq+dd75Tm1SNYXBRe03CqH3d23YnZ
 1I9oZ4TG1St3KaFBrlW5BERyFD2RhAAWJ4bMUz+/bBN9Y2u/r1scVR7YKoqkI2jr
 li1pYoPVLNYrHqdhmhsl7sKOqDRi/0TNvUY/B8tWyEZhTNiMGD9A8Tyv7WJ+iinT
 /mLrR0tCYYrzkvMEVdHt0t8+Bp1nvR/ZSfCS/NavD1CZ4RffENzTnFIhBb1QvCDj
 W1bF4D6930iOS/HXmheVzKygJlz9fj+8PS1DnvIyRPJjXH74dcCn+DPDRVTxyYB1
 3ZSY0I2yFSK0oorN1jYVraDXGB1R0OtIwbdRWvyztqMxaj+gRrSNbSSEcRGAy4YL
 Ipyvd2FyHO1rGxN5CS6FDCkJ/9WxOx1caBF0D3HhZVGxqw/m8qISxS+za8U5lbrT
 90KqHnaWbKL4flfUExjpwPKSvPImgLHN4tqC8l0471i4Tku0unBf8H9RkODkreRU
 fW9GHYCjzxHMwYT0JSHGohsscCvhIhkRYTYlx3bf/1tr0SfYXPiZEJwrJfNTLkZh
 mfm5R+wTL5hGHdDheOldjiGQZsazzxzJv2NK5aAuojVRqJuy3pohiQ72mHP5Wr4M
 9zOKlXbgBDSxTJleN7MJKZhNyanFUaZut+1rhTFeQ4RCUcgqpxc=
 =R62Q
 -----END PGP SIGNATURE-----

Merge tag 'drm-next-2021-09-10' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Just an initial bunch of fixes for the merge window, amdgpu is most of
  them with a few ttm fixes and an fbdev avoid multiply overflow fix.

  core:
   - Make some dma-buf config options depend on DMA_SHARED_BUFFER
   - Handle multiplication overflow of fbdev xres/yres in the core

  ttm:
   - Fix ttm_bo_move_memcpy() when ttm_resource is subclassed
   - Fix ttm deadlock if target BO isn't idle
   - ttm build fix
   - ttm docs fix

  dma-buf:
   - config option fixes

  fbdev:
   - limit resolutions to avoid int overflow

  i915:
   - stddef change.

  amdgpu:
   - Misc cleanups, typo fixes
   - EEPROM fix
   - Add some new PCI IDs
   - Scatter/Gather display support for Yellow Carp
   - PCIe DPM fix for RKL platforms
   - RAS fix

  amdkfd:
   - SVM fix

  vc4:
   - static function fix

  mgag200:
   - fix uninit var

  panfrost:
   - lock_region fixes"

* tag 'drm-next-2021-09-10' of git://anongit.freedesktop.org/drm/drm: (36 commits)
  drm/ttm: Fix a deadlock if the target BO is not idle during swap
  fbmem: don't allow too huge resolutions
  dma-buf: DMABUF_SYSFS_STATS should depend on DMA_SHARED_BUFFER
  dma-buf: DMABUF_DEBUG should depend on DMA_SHARED_BUFFER
  drm/i915: use linux/stddef.h due to "isystem: trim/fixup stdarg.h and other headers"
  dma-buf: DMABUF_MOVE_NOTIFY should depend on DMA_SHARED_BUFFER
  drm/amdkfd: drop process ref count when xnack disable
  drm/amdgpu: enable more pm sysfs under SRIOV 1-VF mode
  drm/amdgpu: fix fdinfo race with process exit
  drm/amdgpu: Fix a deadlock if previous GEM object allocation fails
  drm/amdgpu: stop scheduler when calling hw_fini (v2)
  drm/amdgpu: Clear RAS interrupt status on aldebaran
  drm/amd/display: Initialize lt_settings on instantiation
  drm/amd/display: cleanup idents after a revert
  drm/amd/display: Fix memory leak reported by coverity
  drm/ttm: Fix ttm_bo_move_memcpy() for subclassed struct ttm_resource
  drm/amdgpu/swsmu: fix spelling mistake "minimun" -> "minimum"
  drm/amdgpu: Disable PCIE_DPM on Intel RKL Platform
  drm/amdgpu: show both cmd id and name when psp cmd failed
  drm/amd/display: setup system context for APUs
  ...
 2021-09-10 11:22:23 -07:00
Tetsuo Handa
8c28051cdc fbmem: don't allow too huge resolutions 
syzbot is reporting page fault at vga16fb_fillrect() [1], for
vga16fb_check_var() is failing to detect multiplication overflow.

  if (vxres * vyres > maxmem) {
    vyres = maxmem / vxres;
    if (vyres < yres)
      return -ENOMEM;
  }

Since no module would accept too huge resolutions where multiplication
overflow happens, let's reject in the common path.

Link: https://syzkaller.appspot.com/bug?extid=04168c8063cfdde1db5e [1]
Reported-by: syzbot <syzbot+04168c8063cfdde1db5e@syzkaller.appspotmail.com>
Debugged-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/185175d6-227a-7b55-433d-b070929b262c@i-love.sakura.ne.jp
 2021-09-08 18:52:04 +02:00
Linus Torvalds
2d7b4cdbb5 - Fix-ups 
- Improve bootloader/kernel device handover
 
  - Bug Fixes
    - Stabilise backlight
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEdrbJNaO+IJqU8IdIUa+KL4f8d2EFAmE3brsACgkQUa+KL4f8
 d2Fpvg//WqnzzpoAhhJpsqOvThvptAFinlVH9ql7gsivCBXsY8Fu0RsynlEy3E4o
 DZzhBT/gE1UPkv2HbntuCikZdza1vcyIZrYkUnGb9yAokd0apX2Iss6K50Z7H3U1
 Bvot6MgG9VdgbPD3gcIPO/SEyODl6YhDByUU7kWDgmmi2IM/chcd1+SMK0GtAgfb
 NYcgLPi5nZ8j2zhfhA19H9tdr01Kz0dhBEjfVxDfC2l9bhAl1E7Uj96Ugz9b5oSk
 /J5yhogfFhNuK0kfw1bQ0IUNpDxtg9hh8Q8uk45AX+6w9XyQ3/hkoNhTWbiEpawz
 IZaFI7mTBYmtdwJkcbZ3dP5n4zYSzXloayCHRfbwqUfn6n62EwhGgKOpEkSjbgMD
 825WWjvjUctgjJSOJuWcJftJvf8s+xViycwSP4sbssbCC22QT019dcpsAaHS471Z
 wJJoOxYAMylVIFfG2NOZGkDpVdlYfTGef1RoBrrwWibZPcUOQYi6UNBxxJNlzxHN
 B3xE6r19M91ER9y7qKJ7TD2v5P3hfyFaweetoMaYe6HilEQBj9iaQfvsnqlx/4EC
 qiyf5N72NTm+gUU2gOKoZHkTUILizP89t2blkzrcbwTFnKR1WHHHinJ3nkVguXmB
 17sywI3qaJJb4KaMlRzist9qIDxjbrUjDXC7cMYNXqyEfS6aRXo=
 =wi80
 -----END PGP SIGNATURE-----

Merge tag 'backlight-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Improve bootloader/kernel device handover

  Bug Fixes:
   - Stabilise backlight in ktd253 driver"

* tag 'backlight-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: pwm_bl: Improve bootloader/kernel device handover
  backlight: ktd253: Stabilize backlight
 2021-09-07 12:50:01 -07:00
Daniel Thompson
79fad92f2e backlight: pwm_bl: Improve bootloader/kernel device handover 
Currently there are (at least) two problems in the way pwm_bl starts
managing the enable_gpio pin. Both occur when the backlight is initially
off and the driver finds the pin not already in output mode and, as a
result, unconditionally switches it to output-mode and asserts the signal.

Problem 1: This could cause the backlight to flicker since, at this stage
in driver initialisation, we have no idea what the PWM and regulator are
doing (an unconfigured PWM could easily "rest" at 100% duty cycle).

Problem 2: This will cause us not to correctly honour the
post_pwm_on_delay (which also risks flickers).

Fix this by moving the code to configure the GPIO output mode until after
we have examines the handover state. That allows us to initialize
enable_gpio to off if the backlight is currently off and on if the
backlight is on.

Cc: stable@vger.kernel.org
Reported-by: Marek Vasut <marex@denx.de>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2021-08-19 10:59:03 +01:00
Jani Nikula
b2eb7d7164 Merge drm/drm-next into drm-intel-next 
Catch up with drm core changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2021-08-16 09:11:17 +03:00
Imre Deak
55285e21f0 fbdev/efifb: Release PCI device's runtime PM ref during FB destroy 
Atm the EFI FB platform driver gets a runtime PM reference for the
associated GFX PCI device during probing the EFI FB platform device and
releases it only when the platform device gets unbound.

When fbcon switches to the FB provided by the PCI device's driver (for
instance i915/drmfb), the EFI FB will get only unregistered without the
EFI FB platform device getting unbound, keeping the runtime PM reference
acquired during the platform device probing. This reference will prevent
the PCI driver from runtime suspending the device.

Fix this by releasing the RPM reference from the EFI FB's destroy hook,
called when the FB gets unregistered.

While at it assert that pm_runtime_get_sync() didn't fail.

v2:
- Move pm_runtime_get_sync() before register_framebuffer() to avoid its
  race wrt. efifb_destroy()->pm_runtime_put(). (Daniel)
- Assert that pm_runtime_get_sync() didn't fail.
- Clarify commit message wrt. platform/PCI device/driver and driver
  removal vs. device unbinding.

Fixes: a6c0fd3d5a ("efifb: Ensure graphics device for efifb stays at PCI D0")
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v1)
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210809133146.2478382-1-imre.deak@intel.com
 2021-08-13 16:38:04 +03:00
Geert Uytterhoeven
833d14a4bf video: fbdev: ssd1307fb: Cache address ranges 
Cache the column and page ranges, to avoid doing unneeded I2C transfers
when the values haven't changed.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727134730.3765898-6-geert@linux-m68k.org
 2021-07-27 17:18:26 +02:00
Geert Uytterhoeven
251e48a1db video: fbdev: ssd1307fb: Optimize screen updates 
Currently, each screen update triggers an I2C transfer of all screen
data, up to 1 KiB of data for a 128x64 display, which takes at least 20
ms in Fast mode.

Reduce the amount of transferred data by only updating the rectangle
that changed.  Remove the calls to ssd1307fb_set_col_range() and
ssd1307fb_set_page_range() during initialization, as
ssd1307fb_update_rect() now takes care of that.

Note that for now the optimized operation is only used for fillrect,
copyarea, and imageblit, which are used by fbcon.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727134730.3765898-5-geert@linux-m68k.org
 2021-07-27 17:18:23 +02:00
Geert Uytterhoeven
8a15af3b86 video: fbdev: ssd1307fb: Extract ssd1307fb_set_{col,page}_range() 
Extract the code to set the column and page ranges into two helper
functions.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727134730.3765898-4-geert@linux-m68k.org
 2021-07-27 17:18:21 +02:00
Geert Uytterhoeven
ef9d793825 video: fbdev: ssd1307fb: Simplify ssd1307fb_update_display() 
Simplify the nested loops to handle conversion from linear frame buffer
to ssd1307 page layout:
  1. Move last page handling one level up, as the value of "m" is the
     same inside a page,
  2. array->data[] is filled linearly, so there is no need to
     recalculate array_idx over and over again; a simple increment is
     sufficient.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727134730.3765898-3-geert@linux-m68k.org
 2021-07-27 17:18:18 +02:00
Geert Uytterhoeven
7b4b3733fd video: fbdev: ssd1307fb: Propagate errors via ssd1307fb_update_display() 
Make ssd1307fb_update_display() return an error code, so callers that
can handle failures can propagate it.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727134730.3765898-2-geert@linux-m68k.org
 2021-07-27 17:18:14 +02:00
Maarten Lankhorst
ca31fef11d Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next 
Required bump from v5.13-rc3 to v5.14-rc3, and to pick up sysfb compilation fixes.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
 2021-07-27 12:48:17 +02:00
Alexander Sverdlin
0937a7b362 video: ep93xx: Prepare clock before using it 
Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch
to Common Clock Framework.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210726140001.24820-5-nikita.shubin@maquefel.me
 2021-07-26 22:10:29 +02:00
Zheyu Ma
f92763cb0f video: fbdev: riva: Error out if 'pixclock' equals zero 
The userspace program could pass any values to the driver through
ioctl() interface. If the driver doesn't check the value of 'pixclock',
it may cause divide error.

Fix this by checking whether 'pixclock' is zero first.

The following log reveals it:

[   33.396850] divide error: 0000 [#1] PREEMPT SMP KASAN PTI
[   33.396864] CPU: 5 PID: 11754 Comm: i740 Not tainted 5.14.0-rc2-00513-gac532c9bbcfb-dirty #222
[   33.396883] RIP: 0010:riva_load_video_mode+0x417/0xf70
[   33.396969] Call Trace:
[   33.396973]  ? debug_smp_processor_id+0x1c/0x20
[   33.396984]  ? tick_nohz_tick_stopped+0x1a/0x90
[   33.396996]  ? rivafb_copyarea+0x3c0/0x3c0
[   33.397003]  ? wake_up_klogd.part.0+0x99/0xd0
[   33.397014]  ? vprintk_emit+0x110/0x4b0
[   33.397024]  ? vprintk_default+0x26/0x30
[   33.397033]  ? vprintk+0x9c/0x1f0
[   33.397041]  ? printk+0xba/0xed
[   33.397054]  ? record_print_text.cold+0x16/0x16
[   33.397063]  ? __kasan_check_read+0x11/0x20
[   33.397074]  ? profile_tick+0xc0/0x100
[   33.397084]  ? __sanitizer_cov_trace_const_cmp4+0x24/0x80
[   33.397094]  ? riva_set_rop_solid+0x2a0/0x2a0
[   33.397102]  rivafb_set_par+0xbe/0x610
[   33.397111]  ? riva_set_rop_solid+0x2a0/0x2a0
[   33.397119]  fb_set_var+0x5bf/0xeb0
[   33.397127]  ? fb_blank+0x1a0/0x1a0
[   33.397134]  ? lock_acquire+0x1ef/0x530
[   33.397143]  ? lock_release+0x810/0x810
[   33.397151]  ? lock_is_held_type+0x100/0x140
[   33.397159]  ? ___might_sleep+0x1ee/0x2d0
[   33.397170]  ? __mutex_lock+0x620/0x1190
[   33.397180]  ? trace_hardirqs_on+0x6a/0x1c0
[   33.397190]  do_fb_ioctl+0x31e/0x700

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1627293835-17441-4-git-send-email-zheyuma97@gmail.com
 2021-07-26 20:06:03 +02:00
Zheyu Ma
1520b4b7ba video: fbdev: kyro: Error out if 'pixclock' equals zero 
The userspace program could pass any values to the driver through
ioctl() interface. if the driver doesn't check the value of 'pixclock',
it may cause divide error because the value of 'lineclock' and
'frameclock' will be zero.

Fix this by checking whether 'pixclock' is zero in kyrofb_check_var().

The following log reveals it:

[  103.073930] divide error: 0000 [#1] PREEMPT SMP KASAN PTI
[  103.073942] CPU: 4 PID: 12483 Comm: syz-executor Not tainted 5.14.0-rc2-00478-g2734d6c1b1a0-dirty #118
[  103.073959] RIP: 0010:kyrofb_set_par+0x316/0xc80
[  103.074045] Call Trace:
[  103.074048]  ? ___might_sleep+0x1ee/0x2d0
[  103.074060]  ? kyrofb_ioctl+0x330/0x330
[  103.074069]  fb_set_var+0x5bf/0xeb0
[  103.074078]  ? fb_blank+0x1a0/0x1a0
[  103.074085]  ? lock_acquire+0x3bd/0x530
[  103.074094]  ? lock_release+0x810/0x810
[  103.074103]  ? ___might_sleep+0x1ee/0x2d0
[  103.074114]  ? __mutex_lock+0x620/0x1190
[  103.074126]  ? trace_hardirqs_on+0x6a/0x1c0
[  103.074137]  do_fb_ioctl+0x31e/0x700
[  103.074144]  ? fb_getput_cmap+0x280/0x280
[  103.074152]  ? rcu_read_lock_sched_held+0x11/0x80
[  103.074162]  ? rcu_read_lock_sched_held+0x11/0x80
[  103.074171]  ? __sanitizer_cov_trace_switch+0x67/0xf0
[  103.074181]  ? __sanitizer_cov_trace_const_cmp2+0x20/0x80
[  103.074191]  ? do_vfs_ioctl+0x14b/0x16c0
[  103.074199]  ? vfs_fileattr_set+0xb60/0xb60
[  103.074207]  ? rcu_read_lock_sched_held+0x11/0x80
[  103.074216]  ? lock_release+0x483/0x810
[  103.074224]  ? __fget_files+0x217/0x3d0
[  103.074234]  ? __fget_files+0x239/0x3d0
[  103.074243]  ? do_fb_ioctl+0x700/0x700
[  103.074250]  fb_ioctl+0xe6/0x130

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1627293835-17441-3-git-send-email-zheyuma97@gmail.com
 2021-07-26 20:06:00 +02:00
Zheyu Ma
b36b242d4b video: fbdev: asiliantfb: Error out if 'pixclock' equals zero 
The userspace program could pass any values to the driver through
ioctl() interface. If the driver doesn't check the value of 'pixclock',
it may cause divide error.

Fix this by checking whether 'pixclock' is zero first.

The following log reveals it:

[   43.861711] divide error: 0000 [#1] PREEMPT SMP KASAN PTI
[   43.861737] CPU: 2 PID: 11764 Comm: i740 Not tainted 5.14.0-rc2-00513-gac532c9bbcfb-dirty #224
[   43.861756] RIP: 0010:asiliantfb_check_var+0x4e/0x730
[   43.861843] Call Trace:
[   43.861848]  ? asiliantfb_remove+0x190/0x190
[   43.861858]  fb_set_var+0x2e4/0xeb0
[   43.861866]  ? fb_blank+0x1a0/0x1a0
[   43.861873]  ? lock_acquire+0x1ef/0x530
[   43.861884]  ? lock_release+0x810/0x810
[   43.861892]  ? lock_is_held_type+0x100/0x140
[   43.861903]  ? ___might_sleep+0x1ee/0x2d0
[   43.861914]  ? __mutex_lock+0x620/0x1190
[   43.861921]  ? do_fb_ioctl+0x313/0x700
[   43.861929]  ? mutex_lock_io_nested+0xfa0/0xfa0
[   43.861936]  ? __this_cpu_preempt_check+0x1d/0x30
[   43.861944]  ? _raw_spin_unlock_irqrestore+0x46/0x60
[   43.861952]  ? lockdep_hardirqs_on+0x59/0x100
[   43.861959]  ? _raw_spin_unlock_irqrestore+0x46/0x60
[   43.861967]  ? trace_hardirqs_on+0x6a/0x1c0
[   43.861978]  do_fb_ioctl+0x31e/0x700

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1627293835-17441-2-git-send-email-zheyuma97@gmail.com
 2021-07-26 20:05:50 +02:00
Dave Airlie
8da49a33dd drm-misc-next for v5.15-rc1: 
UAPI Changes:
 - Remove sysfs stats for dma-buf attachments, as it causes a performance regression.
   Previous merge is not in a rc kernel yet, so no userspace regression possible.
 
 Cross-subsystem Changes:
 - Sanitize user input in kyro's viewport ioctl.
 - Use refcount_t in fb_info->count
 - Assorted fixes to dma-buf.
 - Extend x86 efifb handling to all archs.
 - Fix neofb divide by 0.
 - Document corpro,gm7123 bridge dt bindings.
 
 Core Changes:
 - Slightly rework drm master handling.
 - Cleanup vgaarb handling.
 - Assorted fixes.
 
 Driver Changes:
 - Add support for ws2401 panel.
 - Assorted fixes to stm, ast, bochs.
 - Demidlayer ingenic irq.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAmD5TGAACgkQ/lWMcqZw
 E8PNgxAApjTYQSfjIBbOZnNraxW6w7/bPea35E9A47EdBQsNGnYftNsFjbrn/mCJ
 D+0eRLjCMlg4FF1SHdh9cPJ35py+ygbDeupogboLITfU99eGBth3fM2Xdg9LPcBh
 dbni/JLG9R7gIvSlqdJuweN21trfVrV/9FQEilG5DvQcl27Wx5g8VMRZke1EqGKX
 7Id09Uq50ky18vhDjQRCveYhRqJAxV+XozBatzHyxpDVzjLQvRhlAAYdvrSMHZ5R
 jreGzOfR8awc6Om+w7wx3Jn1oEGmXVZB/VqxEqGtMOr3lpARPucxrqfHsqpam3rv
 yIoEKPrkG+k6fsU7Tbg59jNqe/PbCUW3AlpyuBxf55EbnVGgjLDbq4sRRMkehPfA
 fhC31ujOXQQnAgaxyeQAaAJFKNFJzA8Cq5ZPfG+zztzuomHCiUVQBRowP65hJMzR
 +ZlEDnhUD3STLz39zuO1reZR1ZoPIvKbsokHAA+ZrIwUd6U3D3ia8V51pq+lL5aS
 TGDkyMN9jyZ+SO8Z7+2FnJAv9FAOPU/WCLU/fWW46jAvuezwMIwVcjfSqDU2XbZD
 e7KgHpHhx3BGxI8TThHKlY7mf6IL2Bm7X1Cv1pdZs/eEn3Udh2ax942uTQZu/YOO
 0AT1XchpvYCBNRw05bVI3OlJ+w3I8uV+h+11jHOKeY6cbwdHeKE=
 =BUya
 -----END PGP SIGNATURE-----

Merge tag 'drm-misc-next-2021-07-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.15-rc1:

UAPI Changes:
- Remove sysfs stats for dma-buf attachments, as it causes a performance regression.
  Previous merge is not in a rc kernel yet, so no userspace regression possible.

Cross-subsystem Changes:
- Sanitize user input in kyro's viewport ioctl.
- Use refcount_t in fb_info->count
- Assorted fixes to dma-buf.
- Extend x86 efifb handling to all archs.
- Fix neofb divide by 0.
- Document corpro,gm7123 bridge dt bindings.

Core Changes:
- Slightly rework drm master handling.
- Cleanup vgaarb handling.
- Assorted fixes.

Driver Changes:
- Add support for ws2401 panel.
- Assorted fixes to stm, ast, bochs.
- Demidlayer ingenic irq.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2d0d2fe8-01fc-e216-c3fd-38db9e69944e@linux.intel.com
 2021-07-23 11:32:43 +10:00
Linus Walleij
daa3736151 backlight: ktd253: Stabilize backlight 
Remove interrupt disablement during backlight setting. It is
way to dangerous and makes platforms instable by having it
miss vblank IRQs leading to the graphics derailing.

The code is using ndelay() which is not available on
platforms such as ARM and will result in 32 * udelay(1)
which is substantial.

Add some code to detect if an interrupt occurs during the
tight loop and in that case just redo it from the top.

Fixes: 5317f37e48 ("backlight: Add Kinetic KTD253 backlight driver")
Cc: Stephan Gerhold <stephan@gerhold.net>
Reported-by: newbyte@disroot.org
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
 2021-07-21 17:27:27 +01:00
Zheyu Ma
030fadb013 video: fbdev: neofb: add a check against divide error 
The userspace program could pass any values to the driver through
ioctl() interface. If the driver doesn't check the value of 'pixclock',
it may cause divide error because of the 'PICOS2KHZ' macro.

Fix this by checking whether 'pixclock' is zero first.

The following log reveals it:

[   53.093806] divide error: 0000 [#1] PREEMPT SMP KASAN PTI
[   53.093838] CPU: 3 PID: 11763 Comm: hang Not tainted 5.14.0-rc2-00478-g2734d6c1b1a0 #215
[   53.093859] RIP: 0010:neofb_check_var+0x80/0xe50
[   53.093951] Call Trace:
[   53.093956]  ? neofb_setcolreg+0x2b0/0x2b0
[   53.093968]  fb_set_var+0x2e4/0xeb0
[   53.093977]  ? fb_blank+0x1a0/0x1a0
[   53.093984]  ? lock_acquire+0x1ef/0x530
[   53.093996]  ? lock_release+0x810/0x810
[   53.094005]  ? lock_is_held_type+0x100/0x140
[   53.094016]  ? ___might_sleep+0x1ee/0x2d0
[   53.094028]  ? __mutex_lock+0x620/0x1190
[   53.094036]  ? do_fb_ioctl+0x313/0x700
[   53.094044]  ? mutex_lock_io_nested+0xfa0/0xfa0
[   53.094051]  ? __this_cpu_preempt_check+0x1d/0x30
[   53.094060]  ? _raw_spin_unlock_irqrestore+0x46/0x60
[   53.094069]  ? lockdep_hardirqs_on+0x59/0x100
[   53.094076]  ? _raw_spin_unlock_irqrestore+0x46/0x60
[   53.094085]  ? trace_hardirqs_on+0x6a/0x1c0
[   53.094096]  do_fb_ioctl+0x31e/0x700

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1626871424-27708-1-git-send-email-zheyuma97@gmail.com
 2021-07-21 15:02:03 +02:00
Colin Ian King
99279ad8fe video: fbdev: arcfb: remove redundant initialization of variable err 
The variable err is being initialized with a value that is never
read, the assignment is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210721102608.42694-1-colin.king@canonical.com
 2021-07-21 13:09:21 +02:00
Dave Airlie
588b3eee52 drm-misc-next for v5.15: 
UAPI Changes:
 
 Cross-subsystem Changes:
 - udmabuf: Add support for mapping hugepages
 - Add dma-buf stats to sysfs.
 - Assorted fixes to fbdev/omap2.
 - dma-buf: Document DMA_BUF_IOCTL_SYNC
 - Improve dma-buf non-dynamic exporter expectations better.
 - Add module parameters for dma-buf size and list limit.
 - Add HDMI codec support to vc4, to replace vc4's own codec.
 - Document dma-buf implicit fencing rules.
 - dma_resv_test_signaled test_all handling.
 
 Core Changes:
 - Extract i915's eDP backlight code into DRM helpers.
 - Assorted docbook updates.
 - Rework drm_dp_aux documentation.
 - Add support for the DP aux bus.
 - Shrink dma-fence-chain slightly.
 - Add alloc/free helpers for dma-fence-chain.
 - Assorted fixes to TTM., drm/of, bridge
 - drm_gem_plane_helper_prepare/cleanup_fb is now the default for gem drivers.
 - Small fix for scheduler completion.
 - Remove use of drm_device.irq_enabled.
 - Print the driver name to dmesg when registering framebuffer.
 - Export drm/gem's shadow plane handling, and use it in vkms.
 - Assorted small fixes.
 
 Driver Changes:
 - Add eDP backlight to nouveau.
 - Assorted fixes and cleanups to nouveau, panfrost, vmwgfx, anx7625,
   amdgpu, gma500, radeon, mgag200, vgem, vc4, vkms, omapdrm.
 - Add support for Samsung DB7430, Samsung ATNA33XC20, EDT ETMV570G2DHU,
   EDT ETM0350G0DH6, Innolux EJ030NA panels.
 - Fix some simple pannels missing bus_format and connector types.
 - Add mks-guest-stats instrumentation support to vmwgfx.
 - Merge i915-ttm topic branch.
 - Make s6e63m0 panel use Mipi-DBI helpers.
 - Add detect() supoprt for AST.
 - Use interrupts for hotplug on vc4.
 - vmwgfx is now moved to drm-misc-next, as sroland is no longer a maintainer for now.
 - vmwgfx now uses copies of vmware's internal device headers.
 - Slowly convert ti-sn65dsi83 over to atomic.
 - Rework amdgpu dma-resv handling.
 - Fix virtio fencing for planes.
 - Ensure amdgpu can always evict to SYSTEM.
 - Many drivers fixed for implicit fencing rules.
 - Set default prepare/cleanup fb for tiny, vram and simple helpers too.
 - Rework panfrost gpu reset and related serialization.
 - Update VKMS todo list.
 - Make bochs a tiny gpu driver, and use vram helper.
 - Use linux irq interfaces instead of drm_irq in some drivers.
 - Add support for Raspberry Pi Pico to GUD.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAmDxaBwACgkQ/lWMcqZw
 E8PBYRAAsZgmuQU1urEsDTL931jWoJ8zxHpxSLow8ZtplembyhloGeRXRmGT8erd
 ocw1wAzm0UajbFLvv50XW5N4jPnsn9IBRQVhfNNc06g4OH6qy17PPAA+clHaBJrf
 BFiAcK4rzmUet3+6335ko/OvkD5er0s7ipNljxgB7FkIwP3gh3NEFG0yFcpFpxF4
 fzT5Wz5vMW++XUCXZHMX+vBMjFP2AosxLVvsnxpM/48dyFWTiYRg7jhy5bICKYBM
 3GdRj2e1wm3cAsZISbqtDpXSlstIw6u0w+BB6ryQvD/K5nPTqydE/YMOB85DUWLg
 Sp1tijxM/KtOyC5w/IpDLkf9X24KAIcu0eKffUGbkLvIkP5cSyibelOtZBG6Jmln
 AubXpgi4+mGVyYvMEVngHyrY2tW/rtpNGr/g9To9hYVHKkdRZUtolQk7KgtdV7v3
 pFq60AilYTENJthkjCRoTi66BsocpaJfQOyppp6uD8/a0Spxfrq5tM+POWNylqxB
 70L2ObvM4Xx51GI0ziCZQwkMp2Uzwosr+6CdbrzQKaxxpbQEcr3frkv6cap5V0WY
 lnYgFw3dbA/Ga6YsnInQ87KmF4svnaWB2z/KzfnBF5pNrwoR9/4K5k7Vfb3P9YyN
 w+nrfeHto0r768PjC/05uyD9diDuHOw3RHtljf/C4klBNRDDovU=
 =x8Eo
 -----END PGP SIGNATURE-----

Merge tag 'drm-misc-next-2021-07-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.15:

UAPI Changes:

Cross-subsystem Changes:
- udmabuf: Add support for mapping hugepages
- Add dma-buf stats to sysfs.
- Assorted fixes to fbdev/omap2.
- dma-buf: Document DMA_BUF_IOCTL_SYNC
- Improve dma-buf non-dynamic exporter expectations better.
- Add module parameters for dma-buf size and list limit.
- Add HDMI codec support to vc4, to replace vc4's own codec.
- Document dma-buf implicit fencing rules.
- dma_resv_test_signaled test_all handling.

Core Changes:
- Extract i915's eDP backlight code into DRM helpers.
- Assorted docbook updates.
- Rework drm_dp_aux documentation.
- Add support for the DP aux bus.
- Shrink dma-fence-chain slightly.
- Add alloc/free helpers for dma-fence-chain.
- Assorted fixes to TTM., drm/of, bridge
- drm_gem_plane_helper_prepare/cleanup_fb is now the default for gem drivers.
- Small fix for scheduler completion.
- Remove use of drm_device.irq_enabled.
- Print the driver name to dmesg when registering framebuffer.
- Export drm/gem's shadow plane handling, and use it in vkms.
- Assorted small fixes.

Driver Changes:
- Add eDP backlight to nouveau.
- Assorted fixes and cleanups to nouveau, panfrost, vmwgfx, anx7625,
  amdgpu, gma500, radeon, mgag200, vgem, vc4, vkms, omapdrm.
- Add support for Samsung DB7430, Samsung ATNA33XC20, EDT ETMV570G2DHU,
  EDT ETM0350G0DH6, Innolux EJ030NA panels.
- Fix some simple pannels missing bus_format and connector types.
- Add mks-guest-stats instrumentation support to vmwgfx.
- Merge i915-ttm topic branch.
- Make s6e63m0 panel use Mipi-DBI helpers.
- Add detect() supoprt for AST.
- Use interrupts for hotplug on vc4.
- vmwgfx is now moved to drm-misc-next, as sroland is no longer a maintainer for now.
- vmwgfx now uses copies of vmware's internal device headers.
- Slowly convert ti-sn65dsi83 over to atomic.
- Rework amdgpu dma-resv handling.
- Fix virtio fencing for planes.
- Ensure amdgpu can always evict to SYSTEM.
- Many drivers fixed for implicit fencing rules.
- Set default prepare/cleanup fb for tiny, vram and simple helpers too.
- Rework panfrost gpu reset and related serialization.
- Update VKMS todo list.
- Make bochs a tiny gpu driver, and use vram helper.
- Use linux irq interfaces instead of drm_irq in some drivers.
- Add support for Raspberry Pi Pico to GUD.

Signed-off-by: Dave Airlie <airlied@redhat.com>

# gpg: Signature made Fri 16 Jul 2021 21:06:04 AEST
# gpg:                using RSA key B97BD6A80CAC4981091AE547FE558C72A67013C3
# gpg: Good signature from "Maarten Lankhorst <maarten.lankhorst@linux.intel.com>" [expired]
# gpg:                 aka "Maarten Lankhorst <maarten@debian.org>" [expired]
# gpg:                 aka "Maarten Lankhorst <maarten.lankhorst@canonical.com>" [expired]
# gpg: Note: This key has expired!
# Primary key fingerprint: B97B D6A8 0CAC 4981 091A  E547 FE55 8C72 A670 13C3
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/444811c3-cbec-e9d5-9a6b-9632eda7962a@linux.intel.com
 2021-07-21 11:58:28 +10:00
Xiyu Yang
0189cb57b9 fbmem: Convert from atomic_t to refcount_t on fb_info->count 
refcount_t type and corresponding API can protect refcounters from
accidental underflow and overflow and further use-after-free situations.

Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1626674392-55857-1-git-send-email-xiyuyang19@fudan.edu.cn
 2021-07-19 22:16:35 +02:00
Zheyu Ma
98a6543917 video: fbdev: kyro: fix a DoS bug by restricting user input 
The user can pass in any value to the driver through the 'ioctl'
interface. The driver dost not check, which may cause DoS bugs.

The following log reveals it:

divide error: 0000 [#1] PREEMPT SMP KASAN PTI
RIP: 0010:SetOverlayViewPort+0x133/0x5f0 drivers/video/fbdev/kyro/STG4000OverlayDevice.c:476
Call Trace:
 kyro_dev_overlay_viewport_set drivers/video/fbdev/kyro/fbdev.c:378 [inline]
 kyrofb_ioctl+0x2eb/0x330 drivers/video/fbdev/kyro/fbdev.c:603
 do_fb_ioctl+0x1f3/0x700 drivers/video/fbdev/core/fbmem.c:1171
 fb_ioctl+0xeb/0x130 drivers/video/fbdev/core/fbmem.c:1185
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x19b/0x220 fs/ioctl.c:739
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1626235762-2590-1-git-send-email-zheyuma97@gmail.com
 2021-07-19 20:46:32 +02:00
Linus Torvalds
786cb0a2f9 drm fixes for 5.14-rc2 
dma-buf:
 - Fix fence leak in sync_file_merge() error code
 
 drm/panel:
 - nt35510: Don't fail on DSI reads
 
 fbdev:
 - Avoid use-after-free by not deleting current video mode
 
 ttm:
 - Avoid NULL-ptr deref in ttm_range_man_fini()
 
 vmwgfx:
 - Fix a merge commit
 
 qxl:
 - fix a TTM regression
 
 amdgpu:
 - SR-IOV fixes
 - RAS fixes
 - eDP fixes
 - SMU13 code unification to facilitate fixes in the future
 - Add new renoir DID
 - Yellow Carp fixes
 - Beige Goby fixes
 - Revert a bunch of TLB fixes that caused regressions
 - Revert an LTTPR display regression
 
 amdkfd
 - Fix VRAM access regression
 - SVM fixes
 
 i915:
 - Fix -EDEADLK handling regression
 - Drop the page table optimisation
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmDw/WwACgkQDHTzWXnE
 hr6u/hAAgYMAVvARhxt8RcKPPFzxsg3cmlPLWd7f910vQFTNhOZjoeR1aU2SU/gC
 +ruc36x6Qyw+sennfZeVojOwwwUiCuDSolmH8BFermtPtzpEkQu52zTNoDxWk3xP
 Cvk8q0Mwx4v46L2XDbvnHrc3r6yyn3WaJKcriOBu3aNf88VlxE6E8yw2vBiE5UFf
 q8FL8rvDWpcVd0tFUdL/yd1UORfGuFEbrszsoIy1h6ApfwBZwlRsQwk9qv8umdc8
 8O1ET4RfhKmMdz7tSyoFITR9MX7n7xwIFOl5L/14nrFGul/Xt5sumWjSOef7VW3P
 hgfSBK/Om+iTDeN5XOGOMXhARwEH2D/HcwXnKoSGGqcYx+SMlofFqp1oGhKK0Hbh
 MhchY3BgB8jcTNqUtQVA47oeXWjB9Nn+ExGMdY8bbDnPjfTmMMVaM+XOn813xaEP
 6D431w3OOe7QGQGftlZsY8vPJrw+OxLXPzgNbStDzLP+GorgH66wAdC9mC+kbBR1
 CjTKA2l8faicbyVy6n0QbMxGG6ZraXKA1qz+PqH4ZMi1MzGddyifJr8iGBA4etBJ
 6riCJUoI2B9tdSobv/4Keznym66OGR8j5JO7MWsSFn48kAx5z2zF56KX9+5E5OF8
 lH7EvYZJ4dC8bh5qUhE/5xGWbgPAqwyHoWg6BwzWyFNIlLF+rD0=
 =6Jyb
 -----END PGP SIGNATURE-----

Merge tag 'drm-fixes-2021-07-16' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular rc2 fixes though a bit more than usual at rc2 stage, people
  must have been testing early or else some fixes from last week got a
  bit laggy.

  There is one larger change in the amd fixes to amalgamate some power
  management code on the newer chips with the code from the older chips,
  it should only affects chips where support was introduced in rc1 and
  it should make future fixes easier to maintain probably a good idea to
  merge it now.

  Otherwise it's mostly fixes across the board.

  dma-buf:
   - Fix fence leak in sync_file_merge() error code

  drm/panel:
   - nt35510: Don't fail on DSI reads

  fbdev:
   - Avoid use-after-free by not deleting current video mode

  ttm:
   - Avoid NULL-ptr deref in ttm_range_man_fini()

  vmwgfx:
   - Fix a merge commit

  qxl:
   - fix a TTM regression

  amdgpu:
   - SR-IOV fixes
   - RAS fixes
   - eDP fixes
   - SMU13 code unification to facilitate fixes in the future
   - Add new renoir DID
   - Yellow Carp fixes
   - Beige Goby fixes
   - Revert a bunch of TLB fixes that caused regressions
   - Revert an LTTPR display regression

  amdkfd
   - Fix VRAM access regression
   - SVM fixes

  i915:
   - Fix -EDEADLK handling regression
   - Drop the page table optimisation"

* tag 'drm-fixes-2021-07-16' of git://anongit.freedesktop.org/drm/drm: (29 commits)
  drm/amdgpu: add another Renoir DID
  drm/ttm: add a check against null pointer dereference
  drm/i915/gtt: drop the page table optimisation
  drm/i915/gt: Fix -EDEADLK handling regression
  drm/amd/pm: Add waiting for response of mode-reset message for yellow carp
  Revert "drm/amdkfd: Add heavy-weight TLB flush after unmapping"
  Revert "drm/amdgpu: Add table_freed parameter to amdgpu_vm_bo_update"
  Revert "drm/amdkfd: Make TLB flush conditional on mapping"
  Revert "drm/amdgpu: Fix warning of Function parameter or member not described"
  Revert "drm/amdkfd: Add memory sync before TLB flush on unmap"
  drm/amd/pm: Fix BACO state setting for Beige_Goby
  drm/amdgpu: Restore msix after FLR
  drm/amdkfd: Allow CPU access for all VRAM BOs
  drm/amdgpu/display - only update eDP's backlight level when necessary
  drm/amdkfd: handle fault counters on invalid address
  drm/amdgpu: Correct the irq numbers for virtual crtc
  drm/amd/display: update header file name
  drm/amd/pm: drop smu_v13_0_1.c|h files for yellow carp
  drm/amd/display: remove faulty assert
  Revert "drm/amd/display: Always write repeater mode regardless of LTTPR"
  ...
 2021-07-16 11:14:54 -07:00
Gustavo A. R. Silva
c8698340e0 video: fbdev: Fix fall-through warning for Clang 
Fix the following fallthrough warning (arm64-randconfig with Clang):

drivers/video/fbdev/xilinxfb.c:244:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/60edca25.k00ut905IFBjPyt5%25lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
 2021-07-13 13:58:29 -05:00
Zhen Lei
0af778269a fbmem: Do not delete the mode that is still in use 
The execution of fb_delete_videomode() is not based on the result of the
previous fbcon_mode_deleted(). As a result, the mode is directly deleted,
regardless of whether it is still in use, which may cause UAF.

==================================================================
BUG: KASAN: use-after-free in fb_mode_is_equal+0x36e/0x5e0 \
drivers/video/fbdev/core/modedb.c:924
Read of size 4 at addr ffff88807e0ddb1c by task syz-executor.0/18962

CPU: 2 PID: 18962 Comm: syz-executor.0 Not tainted 5.10.45-rc1+ #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ...
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x137/0x1be lib/dump_stack.c:118
 print_address_description+0x6c/0x640 mm/kasan/report.c:385
 __kasan_report mm/kasan/report.c:545 [inline]
 kasan_report+0x13d/0x1e0 mm/kasan/report.c:562
 fb_mode_is_equal+0x36e/0x5e0 drivers/video/fbdev/core/modedb.c:924
 fbcon_mode_deleted+0x16a/0x220 drivers/video/fbdev/core/fbcon.c:2746
 fb_set_var+0x1e1/0xdb0 drivers/video/fbdev/core/fbmem.c:975
 do_fb_ioctl+0x4d9/0x6e0 drivers/video/fbdev/core/fbmem.c:1108
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 18960:
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_set_track+0x3d/0x70 mm/kasan/common.c:56
 kasan_set_free_info+0x17/0x30 mm/kasan/generic.c:355
 __kasan_slab_free+0x108/0x140 mm/kasan/common.c:422
 slab_free_hook mm/slub.c:1541 [inline]
 slab_free_freelist_hook+0xd6/0x1a0 mm/slub.c:1574
 slab_free mm/slub.c:3139 [inline]
 kfree+0xca/0x3d0 mm/slub.c:4121
 fb_delete_videomode+0x56a/0x820 drivers/video/fbdev/core/modedb.c:1104
 fb_set_var+0x1f3/0xdb0 drivers/video/fbdev/core/fbmem.c:978
 do_fb_ioctl+0x4d9/0x6e0 drivers/video/fbdev/core/fbmem.c:1108
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 13ff178ccd ("fbcon: Call fbcon_mode_deleted/new_modelist directly")
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: <stable@vger.kernel.org> # v5.3+
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210712085544.2828-1-thunder.leizhen@huawei.com
 2021-07-13 17:01:38 +02:00
Linus Torvalds
dcf3c935dd This pull request contains the following changes for UML: 
- Support for optimized routines based on the host CPU
 - Support for PCI via virtio
 - Various fixes
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAmDnZwAWHHJpY2hhcmRA
 c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wW1BD/9SHWGYhxLY+xL27eO0Q8XOPePb
 diqllGavzq3fcakmJ3+6iIpb/WYX0ztu1M4KMBRP3QxNjP6nFkS1ph3PC0LL3ec2
 h23hRfOrhlQd4rdonPcq/Z7oXKhrkem9G6KneVfvB94HmXnaZIrNBjwQRy0uRMXE
 /IVNH4o6YMR8Av/VrG+L6BS+O/oXVnYVSLOuXsIrxmxS24NybsOpRzHvl14ZUsHt
 eiwzcRC3ugAaxJn8cOSrHdBwvdOgbFFWEtMITcesQpYru+EmQcsCZdmJ0DbwsV2e
 9k+LrVoy0CZFoekBtaaFvZq+JVBjUZKoAUYBML4ejWnQKolJH0BZQRh4RT0rbTjc
 UMiuE3kFUsdJjzJRyO4pcqpwaNhCiZ2XrwyKeev/FLIn95bD1xbLJWfRvoKhioiI
 X+1vujN2+N5n8T+u8sCVohujJCkUkMjevfF6ew8rvYOj3FrGqTi4jgrXUFAIsjLa
 mHdA92oHIjNOCjyVIqnoUFTDltVMW9CwnLtd5nPnGvJoMtsj7lthy6fdtdPH0WVu
 iNR4toE/AjBJo4rtib/irYbZtqmw2AbBFqoRk4yj8Fw4ZdSPYELwAR1aah0Oce9R
 t1T9OE66vlr28XIC0NF917JfSNkc2eXnx4B21Zh+a/68XSJ1FzXPTob3lvXVVhQR
 Ou4aw6dH7mql/2bq1w==
 =wAww
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

Pull UML updates from Richard Weinberger:

 - Support for optimized routines based on the host CPU

 - Support for PCI via virtio

 - Various fixes

* tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: remove unneeded semicolon in um_arch.c
  um: Remove the repeated declaration
  um: fix error return code in winch_tramp()
  um: fix error return code in slip_open()
  um: Fix stack pointer alignment
  um: implement flush_cache_vmap/flush_cache_vunmap
  um: add a UML specific futex implementation
  um: enable the use of optimized xor routines in UML
  um: Add support for host CPU flags and alignment
  um: allow not setting extra rpaths in the linux binary
  um: virtio/pci: enable suspend/resume
  um: add PCI over virtio emulation driver
  um: irqs: allow invoking time-travel handler multiple times
  um: time-travel/signals: fix ndelay() in interrupt
  um: expose time-travel mode to userspace side
  um: export signals_enabled directly
  um: remove unused smp_sigio_handler() declaration
  lib: add iomem emulation (logic_iomem)
  um: allow disabling NO_IOMEM
 2021-07-09 10:19:13 -07:00
Linus Torvalds
eed0218e8c Char / Misc driver updates for 5.14-rc1 
Here is the big set of char / misc and other driver subsystem updates
 for 5.14-rc1.  Included in here are:
 	- habanna driver updates
 	- fsl-mc driver updates
 	- comedi driver updates
 	- fpga driver updates
 	- extcon driver updates
 	- interconnect driver updates
 	- mei driver updates
 	- nvmem driver updates
 	- phy driver updates
 	- pnp driver updates
 	- soundwire driver updates
 	- lots of other tiny driver updates for char and misc drivers
 
 This is looking more and more like the "various driver subsystems mushed
 together" tree...
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYOM8jQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymECgCg0yL+8WxDKO5Gg5llM5PshvLB1rQAn0y5pDgg
 nw78LV3HQ0U7qaZBtI91
 =x+AR
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the big set of char / misc and other driver subsystem updates
  for 5.14-rc1. Included in here are:

   - habanalabs driver updates

   - fsl-mc driver updates

   - comedi driver updates

   - fpga driver updates

   - extcon driver updates

   - interconnect driver updates

   - mei driver updates

   - nvmem driver updates

   - phy driver updates

   - pnp driver updates

   - soundwire driver updates

   - lots of other tiny driver updates for char and misc drivers

  This is looking more and more like the "various driver subsystems
  mushed together" tree...

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
  mcb: Use DEFINE_RES_MEM() helper macro and fix the end address
  PNP: moved EXPORT_SYMBOL so that it immediately followed its function/variable
  bus: mhi: pci-generic: Add missing 'pci_disable_pcie_error_reporting()' calls
  bus: mhi: Wait for M2 state during system resume
  bus: mhi: core: Fix power down latency
  intel_th: Wait until port is in reset before programming it
  intel_th: msu: Make contiguous buffers uncached
  intel_th: Remove an unused exit point from intel_th_remove()
  stm class: Spelling fix
  nitro_enclaves: Set Bus Master for the NE PCI device
  misc: ibmasm: Modify matricies to matrices
  misc: vmw_vmci: return the correct errno code
  siox: Simplify error handling via dev_err_probe()
  fpga: machxo2-spi: Address warning about unused variable
  lkdtm/heap: Add init_on_alloc tests
  selftests/lkdtm: Enable various testable CONFIGs
  lkdtm: Add CONFIG hints in errors where possible
  lkdtm: Enable DOUBLE_FAULT on all architectures
  lkdtm/heap: Add vmalloc linear overflow test
  lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE
  ...
 2021-07-05 13:42:16 -07:00
Linus Torvalds
3f8b8e7dbd - New Drivers 
- Add support for Richtek RT4831 Backlight
 
  - New Device Support
    - Add support for Qualcomm PMI8994 WLED Backlight
 
  - Fix-ups
    - Device Tree adaptions; richtek,rt4831-backlight
    - Trivial; spelling, whitespace, etc; Kconfig
    - Use Atomic PWM API; lm3630a_bl
 
  - Bug Fixes
    - Fix Firmware Node Leak in error path; lm3630a_bl
    - Fix erroneous return codes; lm3630a_bl
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEdrbJNaO+IJqU8IdIUa+KL4f8d2EFAmDjENoACgkQUa+KL4f8
 d2FA3BAAi8eBLmu34ki65YLV2Xt4ubp0Kc5Egu29g+aEXxS5d2XsAV6N7jWA0OwX
 YLr9uY2YrQjlN0/YAnQweI8fsiz1NpDXVEroplbAJmKn2wGtLJKMII8mIyWxH+q8
 g4f3EkJLUxYhJNppcg+gd3HcRKkBYArH3y52JSJxHdVqM5bKcJZpo/fL//cZihIl
 iEkNLlbmknq4hAhyQpwZ73otA3j4qLCbfeg1I2NXlMw8XfiZuB8iOs5dL8bCoaV7
 lC+2E7KKjgsfJjNSIDLMydB4BmLE6+VCLhlm1ADN/qqp2ulfk9AT5xxOo8eeVs+j
 GEUV2NypVvJwIUhg39E3GpzXdHjEx2KoMDPFYL67gQcxVLd3zSYv1eVztm884IY2
 xWI4lEcZ07IJ4Z+FMRlSUIkRFjLxgqSopbFOAEAI10otuD1+CkWadiphtgO6COjJ
 NQlkq2Zc/ibiBYti2G5i/NaJ9+hg/Abrh6Z1bhPVqhy6lSGRUhtvJaROB1tmARPW
 AR7k2KWqGC03i4VZQ3RzAidPTRFNhSG7YT/kKCuJcIM4s6pOBHiLbDIwEyvJH1AR
 DRxLWz0rFN8yjySeR+FI0GAiPxU2Mz7Psv602FZGbphCnkqAefn1ZWK3yFw2KhaV
 +pxiRBZeiq8XkznadAAPtVO69KHcZf2kkJZS3hgO7k58EuUYeqo=
 =1tpE
 -----END PGP SIGNATURE-----

Merge tag 'backlight-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "New Drivers:
   - Add support for Richtek RT4831 Backlight

  New Device Support:
   - Add support for Qualcomm PMI8994 WLED Backlight

  Fix-ups:
   - Device Tree adaptions to richtek,rt4831-backlight
   - Trivial spelling, whitespace, etc in Kconfig
   - Use Atomic PWM API in lm3630a_bl

  Bug Fixes:
   - Fix Firmware Node Leak in error path in lm3630a_bl
   - Fix erroneous return codes in lm3630a_bl"

* tag 'backlight-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: lm3630a: Convert to atomic PWM API and check for errors
  backlight: lm3630a: Fix return code of .update_status() callback
  backlight: Kconfig whitespace and indentation cleanups
  video: backlight: qcom-wled: Add PMI8994 compatible
  backlight: rt4831: Adds support for Richtek RT4831 backlight
  backlight: rt4831: Adds DT binding document for Richtek RT4831 backlight
  backlight: lm3630a_bl: Put fwnode in error case during ->probe()
 2021-07-05 12:16:00 -07:00
Linus Torvalds
71bd934101 Merge branch 'akpm' (patches from Andrew) 
Merge more updates from Andrew Morton:
 "190 patches.

  Subsystems affected by this patch series: mm (hugetlb, userfaultfd,
  vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock,
  migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap,
  zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc,
  core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs,
  signals, exec, kcov, selftests, compress/decompress, and ipc"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits)
  ipc/util.c: use binary search for max_idx
  ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock
  ipc: use kmalloc for msg_queue and shmid_kernel
  ipc sem: use kvmalloc for sem_undo allocation
  lib/decompressors: remove set but not used variabled 'level'
  selftests/vm/pkeys: exercise x86 XSAVE init state
  selftests/vm/pkeys: refill shadow register after implicit kernel write
  selftests/vm/pkeys: handle negative sys_pkey_alloc() return code
  selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
  kcov: add __no_sanitize_coverage to fix noinstr for all architectures
  exec: remove checks in __register_bimfmt()
  x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned
  hfsplus: report create_date to kstat.btime
  hfsplus: remove unnecessary oom message
  nilfs2: remove redundant continue statement in a while-loop
  kprobes: remove duplicated strong free_insn_page in x86 and s390
  init: print out unknown kernel parameters
  checkpatch: do not complain about positive return values starting with EPOLL
  checkpatch: improve the indented label test
  checkpatch: scripts/spdxcheck.py now requires python3
  ...
 2021-07-02 12:08:10 -07:00
Andy Shevchenko
f39650de68 kernel.h: split out panic and oops helpers 
kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out panic and
oops helpers.

There are several purposes of doing this:
- dropping dependency in bug.h
- dropping a loop by moving out panic_notifier.h
- unload kernel.h from something which has its own domain

At the same time convert users tree-wide to use new headers, although for
the time being include new header back to kernel.h to avoid twisted
indirected includes for existing users.

[akpm@linux-foundation.org: thread_info.h needs limits.h]
[andriy.shevchenko@linux.intel.com: ia64 fix]
  Link: https://lkml.kernel.org/r/20210520130557.55277-1-andriy.shevchenko@linux.intel.com

Link: https://lkml.kernel.org/r/20210511074137.33666-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Co-developed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Helge Deller <deller@gmx.de> # parisc
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-07-01 11:06:04 -07:00