Commit Graph

14835 Commits

Author SHA1 Message Date
Linus Torvalds
3f17ea6dea Merge branch 'next' (accumulated 3.16 merge window patches) into master
Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.

* accumulated work in next: (6809 commits)
  ufs: sb mutex merge + mutex_destroy
  powerpc: update comments for generic idle conversion
  cris: update comments for generic idle conversion
  idle: remove cpu_idle() forward declarations
  nbd: zero from and len fields in NBD_CMD_DISCONNECT.
  mm: convert some level-less printks to pr_*
  MAINTAINERS: adi-buildroot-devel is moderated
  MAINTAINERS: add linux-api for review of API/ABI changes
  mm/kmemleak-test.c: use pr_fmt for logging
  fs/dlm/debug_fs.c: replace seq_printf by seq_puts
  fs/dlm/lockspace.c: convert simple_str to kstr
  fs/dlm/config.c: convert simple_str to kstr
  mm: mark remap_file_pages() syscall as deprecated
  mm: memcontrol: remove unnecessary memcg argument from soft limit functions
  mm: memcontrol: clean up memcg zoneinfo lookup
  mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
  mm/mempool.c: update the kmemleak stack trace for mempool allocations
  lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
  mm: introduce kmemleak_update_trace()
  mm/kmemleak.c: use %u to print ->checksum
  ...
2014-06-08 11:31:16 -07:00
Jonathan Gonzalez V
cbe97414c2 drm/exynos: call find_vma with the mmap_sem held
Performing vma lookups without taking the mm->mmap_sem is asking for
trouble.  While doing the search, the vma in question can be modified or
even removed before returning to the caller.  Take the lock (exclusively)
in order to avoid races while iterating through the vmacache and/or
rbtree.

Signed-off-by: Jonathan Gonzalez V <zeus@gnu.org>
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-04 16:54:00 -07:00
Linus Torvalds
4dc4226f99 ACPI and power management updates for 3.16-rc1
- ACPICA update to upstream version 20140424.  That includes a
    number of fixes and improvements related to things like GPE
    handling, table loading, headers, memory mapping and unmapping,
    DSDT/SSDT overriding, and the Unload() operator.  The acpidump
    utility from upstream ACPICA is included too.  From Bob Moore,
    Lv Zheng, David Box, David Binderman, and Colin Ian King.
 
  - Fixes and cleanups related to ACPI video and backlight interfaces
    from Hans de Goede.  That includes blacklist entries for some new
    machines and using native backlight by default.
 
  - ACPI device enumeration changes to create platform devices
    rather than PNP devices for ACPI device objects with _HID by
    default.  PNP devices will still be created for the ACPI device
    object with device IDs corresponding to real PNP devices, so
    that change should not break things left and right, and we're
    expecting to see more and more ACPI-enumerated platform devices
    in the future.  From Zhang Rui and Rafael J Wysocki.
 
  - Updates for the ACPI LPSS (Low-Power Subsystem) driver allowing
    it to handle system suspend/resume on Asus T100 correctly.
    From Heikki Krogerus and Rafael J Wysocki.
 
  - PM core update introducing a mechanism to allow runtime-suspended
    devices to stay suspended over system suspend/resume transitions
    if certain additional conditions related to coordination within
    device hierarchy are met.  Related PM documentation update and
    ACPI PM domain support for the new feature.  From Rafael J Wysocki.
 
  - Fixes and improvements related to the "freeze" sleep state. They
    affect several places including cpuidle, PM core, ACPI core, and
    the ACPI battery driver.  From Rafael J Wysocki and Zhang Rui.
 
  - Miscellaneous fixes and updates of the ACPI core from Aaron Lu,
    Bjørn Mork, Hanjun Guo, Lan Tianyu, and Rafael J Wysocki.
 
  - Fixes and cleanups for the ACPI processor and ACPI PAD (Processor
    Aggregator Device) drivers from Baoquan He, Manuel Schölling,
    Tony Camuso, and Toshi Kani.
 
  - System suspend/resume optimization in the ACPI battery driver from
    Lan Tianyu.
 
  - OPP (Operating Performance Points) subsystem updates from
    Chander Kashyap, Mark Brown, and Nishanth Menon.
 
  - cpufreq core fixes, updates and cleanups from Srivatsa S Bhat,
    Stratos Karafotis, and Viresh Kumar.
 
  - Updates, fixes and cleanups for the Tegra, powernow-k8, imx6q,
    s5pv210, nforce2, and powernv cpufreq drivers from Brian Norris,
    Jingoo Han, Paul Bolle, Philipp Zabel, Stratos Karafotis, and
    Viresh Kumar.
 
  - intel_pstate driver fixes and cleanups from Dirk Brandewie,
    Doug Smythies, and Stratos Karafotis.
 
  - Enabling the big.LITTLE cpufreq driver on arm64 from Mark Brown.
 
  - Fix for the cpuidle menu governor from Chander Kashyap.
 
  - New ARM clps711x cpuidle driver from Alexander Shiyan.
 
  - Hibernate core fixes and cleanups from Chen Gang, Dan Carpenter,
    Fabian Frederick, Pali Rohár, and Sebastian Capella.
 
  - Intel RAPL (Running Average Power Limit) driver updates from
    Jacob Pan.
 
  - PNP subsystem updates from Bjorn Helgaas and Fabian Frederick.
 
  - devfreq core updates from Chanwoo Choi and Paul Bolle.
 
  - devfreq updates for exynos4 and exynos5 from Chanwoo Choi and
    Bartlomiej Zolnierkiewicz.
 
  - turbostat tool fix from Jean Delvare.
 
  - cpupower tool updates from Prarit Bhargava, Ramkumar Ramachandra
    and Thomas Renninger.
 
  - New ACPI ec_access.c tool for poking at the EC in a safe way
    from Thomas Renninger.
 
 /
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Merge tag 'pm+acpi-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm into next

Pull ACPI and power management updates from Rafael Wysocki:
 "ACPICA is the leader this time (63 commits), followed by cpufreq (28
  commits), devfreq (15 commits), system suspend/hibernation (12
  commits), ACPI video and ACPI device enumeration (10 commits each).

  We have no major new features this time, but there are a few
  significant changes of how things work.  The most visible one will
  probably be that we are now going to create platform devices rather
  than PNP devices by default for ACPI device objects with _HID.  That
  was long overdue and will be really necessary to be able to use the
  same drivers for the same hardware blocks on ACPI and DT-based systems
  going forward.  We're not expecting fallout from this one (as usual),
  but it's something to watch nevertheless.

  The second change having a chance to be visible is that ACPI video
  will now default to using native backlight rather than the ACPI
  backlight interface which should generally help systems with broken
  Win8 BIOSes.  We're hoping that all problems with the native backlight
  handling that we had previously have been addressed and we are in a
  good enough shape to flip the default, but this change should be easy
  enough to revert if need be.

  In addition to that, the system suspend core has a new mechanism to
  allow runtime-suspended devices to stay suspended throughout system
  suspend/resume transitions if some extra conditions are met
  (generally, they are related to coordination within device hierarchy).
  However, enabling this feature requires cooperation from the bus type
  layer and for now it has only been implemented for the ACPI PM domain
  (used by ACPI-enumerated platform devices mostly today).

  Also, the acpidump utility that was previously shipped as a separate
  tool will now be provided by the upstream ACPICA along with the rest
  of ACPICA code, which will allow it to be more up to date and better
  supported, and we have one new cpuidle driver (ARM clps711x).

  The rest is improvements related to certain specific use cases,
  cleanups and fixes all over the place.

  Specifics:

   - ACPICA update to upstream version 20140424.  That includes a number
     of fixes and improvements related to things like GPE handling,
     table loading, headers, memory mapping and unmapping, DSDT/SSDT
     overriding, and the Unload() operator.  The acpidump utility from
     upstream ACPICA is included too.  From Bob Moore, Lv Zheng, David
     Box, David Binderman, and Colin Ian King.

   - Fixes and cleanups related to ACPI video and backlight interfaces
     from Hans de Goede.  That includes blacklist entries for some new
     machines and using native backlight by default.

   - ACPI device enumeration changes to create platform devices rather
     than PNP devices for ACPI device objects with _HID by default.  PNP
     devices will still be created for the ACPI device object with
     device IDs corresponding to real PNP devices, so that change should
     not break things left and right, and we're expecting to see more
     and more ACPI-enumerated platform devices in the future.  From
     Zhang Rui and Rafael J Wysocki.

   - Updates for the ACPI LPSS (Low-Power Subsystem) driver allowing it
     to handle system suspend/resume on Asus T100 correctly.  From
     Heikki Krogerus and Rafael J Wysocki.

   - PM core update introducing a mechanism to allow runtime-suspended
     devices to stay suspended over system suspend/resume transitions if
     certain additional conditions related to coordination within device
     hierarchy are met.  Related PM documentation update and ACPI PM
     domain support for the new feature.  From Rafael J Wysocki.

   - Fixes and improvements related to the "freeze" sleep state.  They
     affect several places including cpuidle, PM core, ACPI core, and
     the ACPI battery driver.  From Rafael J Wysocki and Zhang Rui.

   - Miscellaneous fixes and updates of the ACPI core from Aaron Lu,
     Bjørn Mork, Hanjun Guo, Lan Tianyu, and Rafael J Wysocki.

   - Fixes and cleanups for the ACPI processor and ACPI PAD (Processor
     Aggregator Device) drivers from Baoquan He, Manuel Schölling, Tony
     Camuso, and Toshi Kani.

   - System suspend/resume optimization in the ACPI battery driver from
     Lan Tianyu.

   - OPP (Operating Performance Points) subsystem updates from Chander
     Kashyap, Mark Brown, and Nishanth Menon.

   - cpufreq core fixes, updates and cleanups from Srivatsa S Bhat,
     Stratos Karafotis, and Viresh Kumar.

   - Updates, fixes and cleanups for the Tegra, powernow-k8, imx6q,
     s5pv210, nforce2, and powernv cpufreq drivers from Brian Norris,
     Jingoo Han, Paul Bolle, Philipp Zabel, Stratos Karafotis, and
     Viresh Kumar.

   - intel_pstate driver fixes and cleanups from Dirk Brandewie, Doug
     Smythies, and Stratos Karafotis.

   - Enabling the big.LITTLE cpufreq driver on arm64 from Mark Brown.

   - Fix for the cpuidle menu governor from Chander Kashyap.

   - New ARM clps711x cpuidle driver from Alexander Shiyan.

   - Hibernate core fixes and cleanups from Chen Gang, Dan Carpenter,
     Fabian Frederick, Pali Rohár, and Sebastian Capella.

   - Intel RAPL (Running Average Power Limit) driver updates from Jacob
     Pan.

   - PNP subsystem updates from Bjorn Helgaas and Fabian Frederick.

   - devfreq core updates from Chanwoo Choi and Paul Bolle.

   - devfreq updates for exynos4 and exynos5 from Chanwoo Choi and
     Bartlomiej Zolnierkiewicz.

   - turbostat tool fix from Jean Delvare.

   - cpupower tool updates from Prarit Bhargava, Ramkumar Ramachandra
     and Thomas Renninger.

   - New ACPI ec_access.c tool for poking at the EC in a safe way from
     Thomas Renninger"

* tag 'pm+acpi-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (187 commits)
  ACPICA: Namespace: Remove _PRP method support.
  intel_pstate: Improve initial busy calculation
  intel_pstate: add sample time scaling
  intel_pstate: Correct rounding in busy calculation
  intel_pstate: Remove C0 tracking
  PM / hibernate: fixed typo in comment
  ACPI: Fix x86 regression related to early mapping size limitation
  ACPICA: Tables: Add mechanism to control early table checksum verification.
  ACPI / scan: use platform bus type by default for _HID enumeration
  ACPI / scan: always register ACPI LPSS scan handler
  ACPI / scan: always register memory hotplug scan handler
  ACPI / scan: always register container scan handler
  ACPI / scan: Change the meaning of missing .attach() in scan handlers
  ACPI / scan: introduce platform_id device PNP type flag
  ACPI / scan: drop unsupported serial IDs from PNP ACPI scan handler ID list
  ACPI / scan: drop IDs that do not comply with the ACPI PNP ID rule
  ACPI / PNP: use device ID list for PNPACPI device enumeration
  ACPI / scan: .match() callback for ACPI scan handlers
  ACPI / battery: wakeup the system only when necessary
  power_supply: allow power supply devices registered w/o wakeup source
  ...
2014-06-04 08:57:16 -07:00
Linus Torvalds
1aacb90eaa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next
Pull trivial tree changes from Jiri Kosina:
 "Usual pile of patches from trivial tree that make the world go round"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits)
  staging: go7007: remove reference to CONFIG_KMOD
  aic7xxx: Remove obsolete preprocessor define
  of: dma: doc fixes
  doc: fix incorrect formula to calculate CommitLimit value
  doc: Note need of bc in the kernel build from 3.10 onwards
  mm: Fix printk typo in dmapool.c
  modpost: Fix comment typo "Modules.symvers"
  Kconfig.debug: Grammar s/addition/additional/
  wimax: Spelling s/than/that/, wording s/destinatary/recipient/
  aic7xxx: Spelling s/termnation/termination/
  arm64: mm: Remove superfluous "the" in comment
  of: Spelling s/anonymouns/anonymous/
  dma: imx-sdma: Spelling s/determnine/determine/
  ath10k: Improve grammar in comments
  ath6kl: Spelling s/determnine/determine/
  of: Improve grammar for of_alias_get_id() documentation
  drm/exynos: Spelling s/contro/control/
  radio-bcm2048.c: fix wrong overflow check
  doc: printk-formats: do not mention casts for u64/s64
  doc: spelling error changes
  ...
2014-06-04 08:50:34 -07:00
Rafael J. Wysocki
d9bd44933c Merge branch 'acpi-video'
* acpi-video:
  ACPI / video: Add 4 new models to the use_native_backlight DMI list
  ACPI / video: Add use native backlight quirk for the ThinkPad W530
  ACPI / video: Unregister the backlight device if a raw one shows up later
  backlight: Add backlight device (un)registration notification
  nouveau: Don't check acpi_video_backlight_support() before registering backlight
  acer-wmi: Add Aspire 5741 to video_vendor_dmi_table
  acer-wmi: Switch to acpi_video_unregister_backlight
  ACPI / video: Add an acpi_video_unregister_backlight function
  ACPI / video: Don't register acpi_video_resume notifier without backlight devices
  ACPI / video: change acpi-video brightness_switch_enabled default to 0
2014-06-03 23:12:37 +02:00
Linus Torvalds
776edb5931 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
Pull core locking updates from Ingo Molnar:
 "The main changes in this cycle were:

   - reduced/streamlined smp_mb__*() interface that allows more usecases
     and makes the existing ones less buggy, especially in rarer
     architectures

   - add rwsem implementation comments

   - bump up lockdep limits"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
  rwsem: Add comments to explain the meaning of the rwsem's count field
  lockdep: Increase static allocations
  arch: Mass conversion of smp_mb__*()
  arch,doc: Convert smp_mb__*()
  arch,xtensa: Convert smp_mb__*()
  arch,x86: Convert smp_mb__*()
  arch,tile: Convert smp_mb__*()
  arch,sparc: Convert smp_mb__*()
  arch,sh: Convert smp_mb__*()
  arch,score: Convert smp_mb__*()
  arch,s390: Convert smp_mb__*()
  arch,powerpc: Convert smp_mb__*()
  arch,parisc: Convert smp_mb__*()
  arch,openrisc: Convert smp_mb__*()
  arch,mn10300: Convert smp_mb__*()
  arch,mips: Convert smp_mb__*()
  arch,metag: Convert smp_mb__*()
  arch,m68k: Convert smp_mb__*()
  arch,m32r: Convert smp_mb__*()
  arch,ia64: Convert smp_mb__*()
  ...
2014-06-03 12:57:53 -07:00
Linus Torvalds
e5c4ecdc55 USB driver patches for 3.16-rc1
Here is the big USB driver pull request for 3.16-rc1.
 
 Nothing huge here, but lots of little things in the USB core, and in
 lots of drivers.  Hopefully the USB power management will be work better
 now that it has been reworked to do per-port power control dynamically.
 There's also a raft of gadget driver updates and fixes, CONFIG_USB_DEBUG
 is finally gone now that everything has been converted over to the
 dynamic debug inteface, the last hold-out drivers were cleaned up and
 the config option removed.  There were also other minor things all
 through the drivers/usb/ tree, the shortlog shows this pretty well.
 
 All have been in linux-next, including the very last patch, which came
 from linux-next to fix a build issue on some platforms.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb into next

Pull USB driver updates from Greg KH:
 "Here is the big USB driver pull request for 3.16-rc1.

  Nothing huge here, but lots of little things in the USB core, and in
  lots of drivers.  Hopefully the USB power management will be work
  better now that it has been reworked to do per-port power control
  dynamically.  There's also a raft of gadget driver updates and fixes,
  CONFIG_USB_DEBUG is finally gone now that everything has been
  converted over to the dynamic debug inteface, the last hold-out
  drivers were cleaned up and the config option removed.  There were
  also other minor things all through the drivers/usb/ tree, the
  shortlog shows this pretty well.

  All have been in linux-next, including the very last patch, which came
  from linux-next to fix a build issue on some platforms"

* tag 'usb-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (314 commits)
  usb: hub_handle_remote_wakeup() only exists for CONFIG_PM=y
  USB: orinoco_usb: remove CONFIG_USB_DEBUG support
  USB: media: lirc: igorplugusb: remove CONFIG_USB_DEBUG support
  USB: media: streamzap: remove CONFIG_USB_DEBUG
  USB: media: redrat3: remove CONFIG_USB_DEBUG usage
  USB: media: redrat3: remove unneeded tracing macro
  usb: qcserial: add additional Sierra Wireless QMI devices
  usb: host: max3421-hcd: Use module_spi_driver
  usb: host: max3421-hcd: Allow platform-data to specify Vbus polarity
  usb: host: max3421-hcd: fix "spi_rd8" uses dynamic stack allocation warning
  usb: host: max3421-hcd: Fix missing unlock in max3421_urb_enqueue()
  usb: qcserial: add Netgear AirCard 341U
  Documentation: dt-bindings: update xhci-platform DT binding for R-Car H2 and M2
  usb: host: xhci-plat: add xhci_plat_start()
  usb: host: max3421-hcd: Fix potential NULL urb dereference
  Revert "usb: gadget: net2280: Add support for PLX USB338X"
  USB: usbip: remove CONFIG_USB_DEBUG reference
  USB: remove CONFIG_USB_DEBUG from defconfig files
  usb: resume child device when port is powered on
  usb: hub_handle_remote_wakeup() depends on CONFIG_PM_RUNTIME=y
  ...
2014-06-03 09:11:20 -07:00
Christian König
91b0275c0e drm/radeon: use the CP DMA on CIK
The SDMA sometimes doesn't seem to work reliable.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
2014-06-02 10:57:04 +02:00
Christian König
37903b5e08 drm/radeon: sync page table updates
Only necessary if we don't use the same engine for buffer moves and table updates.

Signed-off-by: Christian König <christian.koenig@amd.com>
2014-06-02 10:56:21 +02:00
Christian König
2f93dc32b0 drm/radeon: fix vm buffer size estimation
Only relevant if we got VM_BLOCK_SIZE>9, but better save than sorry.

Signed-off-by: Christian König <christian.koenig@amd.com>
2014-06-02 10:54:02 +02:00
Sergei Antonov
ba6f582606 drm/crtc-helper: skip locking checks in panicking path
Skip locking checks in drm_helper_*_in_use() if they are called in panicking
path. See similar code in drm_warn_on_modeset_not_all_locked().

After panic information has been output, these WARN_ONs go off outputing a lot
of lines and scrolling the panic information out of the screen. Here is a
partial call trace showing how execution reaches them:

? drm_helper_crtc_in_use()
? __drm_helper_disable_unused_functions()
? several *_set_config functions
? drm_fb_helper_restore_fbdev_mode()

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-02 13:36:52 +10:00
Alex Deucher
3640da2faa drm/radeon/dpm: resume fixes for some systems
Setting the power state prior to restoring the display
hardware leads to blank screens on some systems.  Drop
the power state set from dpm resume.  The power state
will get set as part of the mode set sequence.  Also
add an explicit power state set after mode set resume
to cover PX and headless systems.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=76761

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-06-02 13:33:03 +10:00
Daniel Vetter
18ee37a485 drm/radeon: Resume fbcon last
So a few people complained that

commit 177cf92de4
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Apr 1 22:14:59 2014 +0200

    drm/crtc-helpers: fix dpms on logic

which was merged into 3.15-rc1, broke resume on radeons. Strangely git
bisect lead everyone to

commit 25f397a429
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Jul 19 18:57:11 2013 +0200

    drm/crtc-helper: explicit DPMS on after modeset

which was merged long ago and actually part of 3.14.

Digging deeper I've noticed (again) that the call to
drm_helper_resume_force_mode in the radeon resume handlers was a no-op
previously because everything gets shut down on suspend. radeon does
this with explicit calls to drm_helper_connector_dpms with DPMS_OFF.
But with 177c we now force the dpms state to ON, so suddenly
resume_force_mode actually forced the crtcs back on.

This is the intention of the change after all, the problem is that
radeon resumes the fbdev console layer _before_ restoring the display,
through calling fb_set_suspend. And fbcon does an immediate ->set_par,
which in turn causes the same forced mode restore to happen.

Two concurrent modeset operations didn't lead to happiness. Fix this
by delaying the fbcon resume until the end of the readeon resum
functions.

v2: Fix up a bit of the spelling fail.

References: https://lkml.org/lkml/2014/5/29/1043
References: https://lkml.org/lkml/2014/5/2/388
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=74751
Tested-by: Ken Moffat <zarniwhoop@ntlworld.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ken Moffat <zarniwhoop@ntlworld.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@gmail.com>
2014-05-31 09:19:51 +10:00
Christian König
7d95f6cc4e drm/radeon: only allocate necessary size for vm bo list
No need to always allocate the theoretical maximum here.

Signed-off-by: Christian König <christian.koenig@amd.com>
2014-05-30 14:21:54 +02:00
Marek Olšák
ec65da385d drm/radeon: don't allow RADEON_GEM_DOMAIN_CPU for command submission
It hangs the hardware.

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
2014-05-30 14:21:49 +02:00
Christian König
60a445405a drm/radeon: avoid crash if VM command submission isn't available
Signed-off-by: Christian König <christian.koenig@amd.com>
CC: stable@vger.kernel.org
2014-05-30 14:21:44 +02:00
Christian König
4b21ce1b4b drm/radeon: lower the ref * post PLL maximum once more
Let's be conservative and use 100 here until we find something better.

Bugs: https://bugzilla.kernel.org/show_bug.cgi?id=75241

Signed-off-by: Christian König <christian.koenig@amd.com>
2014-05-30 14:13:30 +02:00
Oliver Neukum
737583f07e USB: udl: proper error reporting
Parsing device descriptors can fail due to a failed memory
allocation. The error needs to be properly propagated to the
upper layers.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 16:03:58 -07:00
Chris Wilson
d23db88c3a drm/i915: Prevent negative relocation deltas from wrapping
This is pure evil. Userspace, I'm looking at you SNA, repacks batch
buffers on the fly after generation as they are being passed to the
kernel for execution. These batches also contain self-referenced
relocations as a single buffer encompasses the state commands, kernels,
vertices and sampler. During generation the buffers are placed at known
offsets within the full batch, and then the relocation deltas (as passed
to the kernel) are tweaked as the batch is repacked into a smaller buffer.
This means that userspace is passing negative relocations deltas, which
subsequently wrap to large values if the batch is at a low address. The
GPU hangs when it then tries to use the large value as a base for its
address offsets, rather than wrapping back to the real value (as one
would hope). As the GPU uses positive offsets from the base, we can
treat the relocation address as the minimum address read by the GPU.
For the upper bound, we trust that userspace will not read beyond the
end of the buffer.

So, how do we fix negative relocations from wrapping? We can either
check that every relocation looks valid when we write it, and then
position each object such that we prevent the offset wraparound, or we
just special-case the self-referential behaviour of SNA and force all
batches to be above 256k. Daniel prefers the latter approach.

This fixes a GPU hang when it tries to use an address (relocation +
offset) greater than the GTT size. The issue would occur quite easily
with full-ppgtt as each fd gets its own VM space, so low offsets would
often be handed out. However, with the rearrangement of the low GTT due
to capturing the BIOS framebuffer, it is already affecting kernels 3.15
onwards. I think only IVB+ is susceptible to this bug, but the workaround
should only kick in rarely, so it seems sensible to always apply it.

v3: Use a bias for batch buffers to prevent small negative delta relocations
from wrapping.

v4 from Daniel:
- s/BIAS/BATCH_OFFSET_BIAS/
- Extract eb_vma_misplaced/i915_vma_misplaced since the conditions
  were growing rather cumbersome.
- Add a comment to eb_get_batch explaining why we do this.
- Apply the batch offset bias everywhere but mention that we've only
  observed it on gen7 gpus.
- Drop PIN_OFFSET_FIX for now, that slipped in from a feature patch.

v5: Add static to eb_get_batch, spotted by 0-day tester.

Testcase: igt/gem_bad_reloc
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78533
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v3)
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-05-27 11:18:40 +03:00
Chris Wilson
9aab8bff7a drm/i915: Only copy back the modified fields to userspace from execbuffer
We only want to modifiy a single field in the userspace view of the
execbuffer command buffer, so explicitly change that rather than copy
everything back again.

This serves two purposes:

1. The single fields are much cheaper to copy (constant size so the
copy uses special case code) and much smaller than the whole array.

2. We modify the array for internal use that need to be masked from
the user.

Note: We need this backported since without it the next bugfix will
blow up when userspace recycles batchbuffers and relocations.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-05-27 11:18:39 +03:00
Chris Wilson
00731155a7 drm/i915: Fix dynamic allocation of physical handles
A single object may be referenced by multiple registers fundamentally
breaking the static allotment of ids in the current design. When the
object is used the second time, the physical address of the first
assignment is relinquished and a second one granted. However, the
hardware is still reading (and possibly writing) to the old physical
address now returned to the system. Eventually hilarity will ensue, but
in the short term, it just means that cursors are broken when using more
than one pipe.

v2: Fix up leak of pci handle when handling an error during attachment,
and avoid a double kmap/kunmap. (Ville)
Rebase against -fixes.

v3: And fix the error handling added in v2 (Ville)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77351
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-05-27 11:18:39 +03:00
Hans de Goede
bee564430f nouveau: Don't check acpi_video_backlight_support() before registering backlight
acpi_video_backlight_support() is supposed to be called by other (vendor
specific) firmware backlight controls, not by native / raw backlight controls
like nv_backlight.

Userspace will normally prefer firmware interfaces over raw interfaces, so
if acpi_video backlight support is present it will use that even if
nv_backlight is registered as well.

Except when video.use_native_backlight is present on the kernel cmdline
(or enabled through a dmi based quirk). As the name indicates the goal here
is to make only the raw interface available to userspace so that it will use
that (it only does this when it sees a win8 compliant bios).

This is done by:
1) Not registering any acpi_video# backlight devices; and
2) Making acpi_video_backlight_support() return true so that other firmware
drivers, ie acer_wmi, thinkpad_acpi, dell_laptop, etc. Don't register their
own vender specific interfaces.

Currently nouveau breaks this setup, as when acpi_video_backlight_support()
returns true, it does not register itself, resulting in no backlight control
at all.

This is esp. going to be a problem with 3.16 which will default to
video.use_native_backlight=1, and thus nouveau based laptops with a win8 bios
will get no backlight control at all.

This also likely explains why the previous attempt to make
video.use_native_backlight=1 the default was not a success, as without this
patch having a default of video.use_native_backlight=1 will cause regressions.

Note this effectively reverts commit 5bead799d3 (drm/nouveau: don't
expose backlight control when available through ACPI).

References: https://bugzilla.redhat.com/show_bug.cgi?id=1093171
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 01:29:00 +02:00
Dave Airlie
77c01bef72 Merge branch 'drm-fixes-3.15' of git://people.freedesktop.org/~deathsimple/linux into drm-fixes
radeon fixes, VCE one is big but does fix a userspace crash.

* 'drm-fixes-3.15' of git://people.freedesktop.org/~deathsimple/linux:
  drm/radeon/pm: don't allow debugfs/sysfs access when PX card is off (v2)
  drm/radeon: avoid segfault on device open when accel is not working.
  drm/radeon: fix typo in finding PLL params
  drm/radeon: fix register typo on si
  drm/radeon: fix buffer placement under memory pressure v2
  drm/radeon: fix page directory update size estimation
  drm/radeon: handle non-VGA class pci devices with ATRM
  drm/radeon: fix DCE83 check for mullins
  drm/radeon: check VCE relocation buffer range v3
  drm/radeon: also try GART for CPU accessed buffers
2014-05-22 09:15:57 +10:00
Dave Airlie
763b2573cf Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
fixes nasty panel bleeding bug.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/gf119-/disp: fix nasty bug which can clobber SOR0's clock setup
  drm/nvd9/therm: handle another kind of PWM fan
2014-05-22 09:14:50 +10:00
Alex Deucher
4f2f203976 drm/radeon/pm: don't allow debugfs/sysfs access when PX card is off (v2)
When the PX card is off don't try and access it. Avoid hw access
to the card while it's off (e.g., reading back invalid temperature).

v2: be less strict

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=76321

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Christian König <christian.koenig@amd.com>
2014-05-20 14:42:08 +02:00
Jérôme Glisse
24f47acc78 drm/radeon: avoid segfault on device open when accel is not working.
When accel is not working on device with virtual address space radeon
segfault because the ib buffer is NULL and trying to map it inside the
virtual address space trigger segfault. This patch only map the ib
buffer if accel is working.

Cc: <stable@vger.kernel.org>
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
2014-05-20 14:42:06 +02:00
Christian König
74ad54f249 drm/radeon: fix typo in finding PLL params
Otherwise the limit is raised to high.

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Ken Moffat <zarniwhoop@ntlworld.com>
2014-05-20 14:42:05 +02:00
Alex Deucher
4955bb073f drm/radeon: fix register typo on si
Probably a copy paste typo.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
2014-05-20 14:42:04 +02:00
Christian König
4b09556660 drm/radeon: fix buffer placement under memory pressure v2
Some buffers (UVD/VM page tables) must be placed in VRAM,
but the byte restriction for moving buffers didn't took this
into account.

v2: keep closer to the original code

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2014-05-20 14:42:02 +02:00
Christian König
4906f6891e drm/radeon: fix page directory update size estimation
Take padding into account as well.

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=75651

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2014-05-20 14:42:01 +02:00
Alex Deucher
d8ade3526b drm/radeon: handle non-VGA class pci devices with ATRM
Newer PX systems have non-VGA pci class dGPUs.  Update
the ATRM fetch method to handle those cases.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=75401

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
2014-05-20 14:42:00 +02:00
Alex Deucher
89d2618dbd drm/radeon: fix DCE83 check for mullins
Mullins is DCE83 just like Kabini.  Set the proper number
of endpoints on mullins.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
2014-05-20 14:41:58 +02:00
Leo Liu
2fc5703abd drm/radeon: check VCE relocation buffer range v3
v2 (chk): fix image size storage
v3 (chk): fix UV size calculation

Signed-off-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
2014-05-20 14:40:46 +02:00
Christian König
544092596e drm/radeon: also try GART for CPU accessed buffers
Placing them exclusively into VRAM might not work all the time.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=78297

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2014-05-20 14:19:25 +02:00
Ben Skeggs
0f1d360b2e drm/gf119-/disp: fix nasty bug which can clobber SOR0's clock setup
Fixes a LVDS bleed issue on Lenovo W530 that can occur under a
number of circumstances.

Cc: <stable@vger.kernel.org > # v3.9+
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-05-20 16:28:57 +10:00
Martin Peres
6679b2ccc9 drm/nvd9/therm: handle another kind of PWM fan
Signed-off-by: Martin Peres <martin.peres@free.fr>
Tested-by: SaveTheRobots <john.rowley08@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-05-20 16:28:53 +10:00
Dave Airlie
4ba4801d73 Merge tag 'drm-intel-fixes-2014-05-16' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Intel fixes for regressions, black screens and hangs, for 3.15.

* tag 'drm-intel-fixes-2014-05-16' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Increase WM memory latency values on SNB
  drm/i915: restore backlight precision when converting from ACPI
  drm/i915: Use the first mode if there is no preferred mode in the EDID
  drm/i915/dp: force eDP lane count to max available lanes on BDW
  drm/i915/vlv: reset VLV media force wake request register
  drm/i915/SDVO: For sysfs link put directory and target in correct order
  drm/i915: use lane count and link rate from VBT as minimums for eDP
  drm/i915: clean up VBT eDP link param decoding
  drm/i915: consider the source max DP lane count too
2014-05-20 09:56:26 +10:00
Ville Syrjälä
e95a2f7509 drm/i915: Increase WM memory latency values on SNB
On SNB the BIOS provided WM memory latency values seem insufficient to
handle high resolution displays.

In this particular case the display mode was a 2560x1440@60Hz, which
makes the pixel clock 241.5 MHz. It was empirically found that a memory
latency value if 1.2 usec is enough to avoid underruns, whereas the BIOS
provided value of 0.7 usec was clearly too low. Incidentally 1.2 usec
is what the typical BIOS provided values are on IVB systems.

Increase the WM memory latency values to at least 1.2 usec on SNB.
Hopefully this won't have a significant effect on power consumption.

v2: Increase the latency values regardless of the pixel clock

Cc: Robert N <crshman@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70254
Tested-by: Robert Navarro <crshman@gmail.com>
Tested-by: Vitaly Minko <vitaly.minko@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-15 14:10:11 +03:00
Aaron Lu
721e82c08c drm/i915: restore backlight precision when converting from ACPI
When we set backlight on behalf of ACPI opregion, we will convert the
backlight value in the 0-255 range defined in opregion to the actual
hardware level. Commit 22505b82a2 (drm/i915: avoid brightness overflow
when doing scale) is meant to fix the overflow problem when doing the
conversion, but it also caused a problem that the converted hardware
level doesn't quite represent the intended value: say user wants maximum
backlight level(255 in opregion's range), then we will calculate the
actual hardware level to be: level = freq / max * level, where freq is
the hardware's max backlight level(937 on an user's box), and max and
level are all 255. The converted value should be 937 but the above
calculation will yield 765.

To fix this issue, just use 64 bits to do the calculation to keep the
precision and avoid overflow at the same time.

Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=72491
Reported-by: Nico Schottelius <nico-bugzilla.kernel.org@schottelius.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-15 11:32:51 +03:00
Chris Wilson
afba0b5a22 drm/i915: Use the first mode if there is no preferred mode in the EDID
This matches the algorithm used by earlier kernels when selecting the
mode for the fbcon. And only if there is no modes at all, do we fall
back to using the BIOS configuration. Seamless transition is still
preserved (from the BIOS configuration to ours) so long as the BIOS has
also chosen what we hope is the native configuration.

Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78655
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[Jani: applied Chris' "Please imagine that I wrote this correctly."]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-15 11:32:35 +03:00
Jani Nikula
f4cdbc2144 drm/i915/dp: force eDP lane count to max available lanes on BDW
There are certain BDW high res eDP machines that regressed due to

commit 38aecea0cc
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Mon Mar 3 11:18:10 2014 +0100

    drm/i915: reverse dp link param selection, prefer fast over wide again

The commit lead to 2 lanes at 5.4 Gbps being used instead of 4 lanes at
2.7 Gbps on the affected machines. Link training succeeded for both, but
the screen remained blank with the former config. Further investigation
showed that 4 lanes at 5.4 Gbps worked also.

The root cause for the blank screen using 2 lanes remains unknown, but
apparently the driver for a certain other operating system by default
uses the max available lanes. Follow suit on Broadwell eDP, for at least
until we figure out what is going on.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76711
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Tested-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-15 11:04:21 +03:00
Jani Nikula
05adaf1f10 drm/i915/vlv: reset VLV media force wake request register
Media force wake get hangs the machine when the system is booted without
displays attached. The assumption is that (at least some versions of)
the firmware has skipped some initialization in that case.

Empirical evidence suggests we need to reset the media force wake
request register in addition to the render one to avoid hangs.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75895
Reported-by: Imre Deak <imre.deak@intel.com>
Reported-by: Darren Hart <dvhart@linux.intel.com>
Tested-by: Darren Hart <dvhart@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-09 21:47:26 +03:00
Egbert Eich
e4c610fe05 drm/i915/SDVO: For sysfs link put directory and target in correct order
When linking the i2c sysfs file into the connector's directory
pass directory and link target in the right order.
This code was introduced with:

  commit 931c1c2698
  Author: Imre Deak <imre.deak@intel.com>
  Date:   Tue Feb 11 17:12:51 2014 +0200

    drm/i915: sdvo: add i2c sysfs symlink to the connector's directory

    This is the same what we do for DP connectors, so make things more
    consistent.

Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-07 15:01:50 +03:00
Jani Nikula
56071a2076 drm/i915: use lane count and link rate from VBT as minimums for eDP
Most likely the minimums for both should be enough for enabling the
native resolution on the eDP, and we'll end up using the predetermined
optimal link config for the panel.

v2: Add debug prints.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73539
Tested-by: Markus Blank-Burian <burian@muenster.de>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-07 15:01:50 +03:00
Jani Nikula
e13e2b2c46 drm/i915: clean up VBT eDP link param decoding
Use defines, do not set anything if VBT has values unknown to us.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-07 15:01:49 +03:00
Paulo Zanoni
eeb6324dd6 drm/i915: consider the source max DP lane count too
Even if the panel claims it can support 4 lanes, there's the
possibility that the HW can't, so consider this while selecting the
max lane count.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2014-05-07 15:01:49 +03:00
Dave Airlie
995c376e89 Merge branch 'mullins' of git://people.freedesktop.org/~deathsimple/linux into drm-fixes
Add Mullins chips support.

* 'mullins' of git://people.freedesktop.org/~deathsimple/linux:
  drm/radeon: add pci ids for Mullins
  drm/radeon: add Mullins VCE support
  drm/radeon: modesetting updates for Mullins.
  drm/radeon: dpm updates for KV/KB
  drm/radeon: add Mullins dpm support.
  drm/radeon: add Mullins UVD support.
  drm/radeon: update cik init for Mullins.
  drm/radeon: add Mullins chip family
2014-05-07 09:10:28 +10:00
Dave Airlie
2a1235e53b Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
nouveau fixes.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/gm107/gr: bump attrib cb size quite a bit
  drm/nouveau: fix another lock unbalance in nouveau_crtc_page_flip
  drm/nouveau/bios: fix shadowing from PROM on big-endian systems
  drm/nouveau/acpi: allow non-optimus setups to load vbios from acpi
2014-05-07 09:06:21 +10:00
Dave Airlie
508200c5c0 Merge tag 'topc/core-stuff-2014-05-05' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Some more i915 fixes. There's still some DP issues we are looking into,
but wanted to get these moving.

* tag 'topc/core-stuff-2014-05-05' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: don't try DP_LINK_BW_5_4 on HSW ULX
  drm/i915: Sanitize the enable_ppgtt module option once
  drm/i915: Break encoder->crtc link separately in intel_sanitize_crtc()
2014-05-07 08:56:03 +10:00
Leo Liu
428beddd02 drm/radeon: add Mullins VCE support
VCE 2.0 just like the other CIK parts.

Signed-off-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
2014-05-06 12:20:05 +02:00