So far the code only validates the buffer size of the first skb.
Extend this check to cover additional fragments as well, in case the size
is corrupted during a DMA reset.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The linux-firmware brcmfmac firmware files contain an embedded table with
per country allowed channels and strength info.
For recent hardware these versions of the firmware are specially build for
linux-firmware, the firmware files directly available from Cypress rely on
a separate clm_blob file for this info.
For some unknown reason Cypress refuses to provide the standard firmware
files + clm_blob files it uses elsewhere for inclusion into linux-firmware,
instead relying on these special builds with the clm_blob info embedded.
This means that the linux-firmware firmware versions often lag behind,
but I digress.
The brcmfmac driver does support the separate clm_blob file and always
tries to load this. Currently we use request_firmware for this. This means
that on any standard install, using the standard combo of linux-kernel +
linux-firmware, we will get a warning:
"Direct firmware load for ... failed with error -2"
On top of this, brcmfmac itself prints: "no clm_blob available (err=-2),
device may have limited channels available".
This commit switches to firmware_request_nowarn, fixing almost any brcmfmac
device logging the warning (it leaves the brcmfmac info message in place).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
There is a system warning message, warn_slowpath-fmt, during suspend
while using supplicant join AP and enable wowl feature by IW command.
It's caused by brcmf_pno_remove_request path can't find the reqid.
This fix will not go to remove pno request function if there is no
pno scan.
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Lo-Hsiang Lo <double.lo@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Accessing struct device is pretty useful/common so having a direct
pointer:
1) Simplifies some code
2) Makes bcma_bus_get_host_dev() unneeded
3) Allows further improvements like using dev_* printing helpers
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
With the current approach of scanning, roaming delays are observed.
Firmware has support for back ground scanning. To get this advantage,
mac80211 hardware scan is implemented, which decides type of scan to
do based on connected state.
When station is in not connected, driver returns with special value 1
to trigger software scan in mac80211. In case of connected state,
background scan will be triggered.
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Siva Rebbagondla <siva.rebbagondla@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
usb_register() may fail, so let's check its status and issue an error
message if it fails.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Drop LIST_HEAD where the variable it declares has never
been used.
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier x;
@@
- LIST_HEAD(x);
... when != x
// </smpl>
Fixes: a910e4a94f ("cw1200: add driver for the ST-E CW1100 & CW1200 WLAN chipsets")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Add the missing unlock before return from function cw1200_hw_scan()
in the error handling case.
Fixes: 4f68ef64cd ("cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The Point of View TAB-P1006W-232 tablet contains quite generic names in
the sys_vendor and product_name DMI strings, without this patch brcmfmac
will try to load: brcmfmac43340-sdio.Insyde-BayTrail.txt as nvram file
which is a bit too generic.
Add a DMI quirk so that a unique and clearly identifiable nvram file
name is used on the PoV TAB-P1006W-232 tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Currently array element org[3] is being accessed, however the array is
only 3 elements in size, so this looks like an off-by-one out-of-bounds
error. Fix this by using org[2], which I believe was the original
intent.
This issue has existed in the driver back in the pre-git days, so no
idea when it was introduced.
Detected by CoverityScan, CID#711344 ("Out-of-bounds read")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:1202:5: warning: variable 'phybw40' set but not used [-Wunused-but-set-variable]
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:4625:5: warning: variable 'phybw40' set but not used [-Wunused-but-set-variable]
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:4834:5: warning: variable 'phybw40' set but not used [-Wunused-but-set-variable]
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:3085:17: warning: variable 'maxtargetpwr' set but not used [-Wunused-but-set-variable]
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:4215:17: warning: variable 'maxtargetpwr' set but not used [-Wunused-but-set-variable]
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
- improve boolinit.cocci and use_after_iter.cocci semantic patches
- fix alignment for kallsyms
- move 'asm goto' compiler test to Kconfig and clean up jump_label
CONFIG option
- generate asm-generic wrappers automatically if arch does not implement
mandatory UAPI headers
- remove redundant generic-y defines
- misc cleanups
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=I+r6
-----END PGP SIGNATURE-----
Merge tag 'kbuild-v4.21-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- improve boolinit.cocci and use_after_iter.cocci semantic patches
- fix alignment for kallsyms
- move 'asm goto' compiler test to Kconfig and clean up jump_label
CONFIG option
- generate asm-generic wrappers automatically if arch does not
implement mandatory UAPI headers
- remove redundant generic-y defines
- misc cleanups
* tag 'kbuild-v4.21-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: rename generated .*conf-cfg to *conf-cfg
kbuild: remove unnecessary stubs for archheader and archscripts
kbuild: use assignment instead of define ... endef for filechk_* rules
arch: remove redundant UAPI generic-y defines
kbuild: generate asm-generic wrappers if mandatory headers are missing
arch: remove stale comments "UAPI Header export list"
riscv: remove redundant kernel-space generic-y
kbuild: change filechk to surround the given command with { }
kbuild: remove redundant target cleaning on failure
kbuild: clean up rule_dtc_dt_yaml
kbuild: remove UIMAGE_IN and UIMAGE_OUT
jump_label: move 'asm goto' support test to Kconfig
kallsyms: lower alignment on ARM
scripts: coccinelle: boolinit: drop warnings on named constants
scripts: coccinelle: check for redeclaration
kconfig: remove unused "file" field of yylval union
nds32: remove redundant kernel-space generic-y
nios2: remove unneeded HAS_DMA define
Pull perf tooling updates form Ingo Molnar:
"A final batch of perf tooling changes: mostly fixes and small
improvements"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (29 commits)
perf session: Add comment for perf_session__register_idle_thread()
perf thread-stack: Fix thread stack processing for the idle task
perf thread-stack: Allocate an array of thread stacks
perf thread-stack: Factor out thread_stack__init()
perf thread-stack: Allow for a thread stack array
perf thread-stack: Avoid direct reference to the thread's stack
perf thread-stack: Tidy thread_stack__bottom() usage
perf thread-stack: Simplify some code in thread_stack__process()
tools gpio: Allow overriding CFLAGS
tools power turbostat: Override CFLAGS assignments and add LDFLAGS to build command
tools thermal tmon: Allow overriding CFLAGS assignments
tools power x86_energy_perf_policy: Override CFLAGS assignments and add LDFLAGS to build command
perf c2c: Increase the HITM ratio limit for displayed cachelines
perf c2c: Change the default coalesce setup
perf trace beauty ioctl: Beautify USBDEVFS_ commands
perf trace beauty: Export function to get the files for a thread
perf trace: Wire up ioctl's USBDEBFS_ cmd table generator
perf beauty ioctl: Add generator for USBDEVFS_ ioctl commands
tools headers uapi: Grab a copy of usbdevice_fs.h
perf trace: Store the major number for a file when storing its pathname
...
The semantics of what "in core" means for the mincore() system call are
somewhat unclear, but Linux has always (since 2.3.52, which is when
mincore() was initially done) treated it as "page is available in page
cache" rather than "page is mapped in the mapping".
The problem with that traditional semantic is that it exposes a lot of
system cache state that it really probably shouldn't, and that users
shouldn't really even care about.
So let's try to avoid that information leak by simply changing the
semantics to be that mincore() counts actual mapped pages, not pages
that might be cheaply mapped if they were faulted (note the "might be"
part of the old semantics: being in the cache doesn't actually guarantee
that you can access them without IO anyway, since things like network
filesystems may have to revalidate the cache before use).
In many ways the old semantics were somewhat insane even aside from the
information leak issue. From the very beginning (and that beginning is
a long time ago: 2.3.52 was released in March 2000, I think), the code
had a comment saying
Later we can get more picky about what "in core" means precisely.
and this is that "later". Admittedly it is much later than is really
comfortable.
NOTE! This is a real semantic change, and it is for example known to
change the output of "fincore", since that program literally does a
mmmap without populating it, and then doing "mincore()" on that mapping
that doesn't actually have any pages in it.
I'm hoping that nobody actually has any workflow that cares, and the
info leak is real.
We may have to do something different if it turns out that people have
valid reasons to want the old semantics, and if we can limit the
information leak sanely.
Cc: Kevin Easton <kevin@guarana.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Masatake YAMATO <yamato@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 594cc251fd ("make 'user_access_begin()' do 'access_ok()'")
broke both alpha and SH booting in qemu, as noticed by Guenter Roeck.
It turns out that the bug wasn't actually in that commit itself (which
would have been surprising: it was mostly a no-op), but in how the
addition of access_ok() to the strncpy_from_user() and strnlen_user()
functions now triggered the case where those functions would test the
access of the very last byte of the user address space.
The string functions actually did that user range test before too, but
they did it manually by just comparing against user_addr_max(). But
with user_access_begin() doing the check (using "access_ok()"), it now
exposed problems in the architecture implementations of that function.
For example, on alpha, the access_ok() helper macro looked like this:
#define __access_ok(addr, size) \
((get_fs().seg & (addr | size | (addr+size))) == 0)
and what it basically tests is of any of the high bits get set (the
USER_DS masking value is 0xfffffc0000000000).
And that's completely wrong for the "addr+size" check. Because it's
off-by-one for the case where we check to the very end of the user
address space, which is exactly what the strn*_user() functions do.
Why? Because "addr+size" will be exactly the size of the address space,
so trying to access the last byte of the user address space will fail
the __access_ok() check, even though it shouldn't. As a result, the
user string accessor functions failed consistently - because they
literally don't know how long the string is going to be, and the max
access is going to be that last byte of the user address space.
Side note: that alpha macro is buggy for another reason too - it re-uses
the arguments twice.
And SH has another version of almost the exact same bug:
#define __addr_ok(addr) \
((unsigned long __force)(addr) < current_thread_info()->addr_limit.seg)
so far so good: yes, a user address must be below the limit. But then:
#define __access_ok(addr, size) \
(__addr_ok((addr) + (size)))
is wrong with the exact same off-by-one case: the case when "addr+size"
is exactly _equal_ to the limit is actually perfectly fine (think "one
byte access at the last address of the user address space")
The SH version is actually seriously buggy in another way: it doesn't
actually check for overflow, even though it did copy the _comment_ that
talks about overflow.
So it turns out that both SH and alpha actually have completely buggy
implementations of access_ok(), but they happened to work in practice
(although the SH overflow one is a serious serious security bug, not
that anybody likely cares about SH security).
This fixes the problems by using a similar macro on both alpha and SH.
It isn't trying to be clever, the end address is based on this logic:
unsigned long __ao_end = __ao_a + __ao_b - !!__ao_b;
which basically says "add start and length, and then subtract one unless
the length was zero". We can't subtract one for a zero length, or we'd
just hit an underflow instead.
For a lot of access_ok() users the length is a constant, so this isn't
actually as expensive as it initially looks.
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAlwyBbEACgkQ8vlZVpUN
gaNrawgAhYWrPwsEFM17dziRWRm8Ub9QgQUK6JRt+vE5KCRRVdXgJSLVH4esW9rJ
X+QQ0diT8ZMKjdbsyz0cVmwP7nqQ5EKzjxts6J8vtbWDB6+nvaDLNdicJgUOprcT
jIi8/45XKmyGUVO9Au6Wdda/zZi4dQBkXd+zUFGWYQRYL0LgmboWHKlaWueu7Qha
xVtavYPSKUSMH8+r1F+HU6P41+1IBiuK4tCwfKfAqJ367Ushzk9xVKHNGrGDAQNi
BTbn4NOOFaYvmVudJbQjD3tHtuQu2JsxlclB5KAtLBm1r3+vb3fMGsNyPBUmNp6Y
YE/xKhACP4kYlk9xCG7vWcWGyTu90g==
=HR7f
-----END PGP SIGNATURE-----
Merge tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt
Pull fscrypt updates from Ted Ts'o:
"Add Adiantum support for fscrypt"
* tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
fscrypt: add Adiantum support
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAlwyAi0ACgkQ8vlZVpUN
gaMtEgf9GyIJ5UnbR3J5+tpOAjx2GFJmTgpinWcfqVBrWwQDTigxiLm5sRIz5ToY
hoWvCIxWm9LgrdS0unYOUNzRyzSZisNAtceowbPErlV5NPS9zcftVt4pRYZ6hIZK
L3wKQ/PdVxIaekP9SXvFx5tfnHSB6CTGOJu1YMlF8ERm4tXUXHIwHzwUwrYqPYN0
5i0uWxbx7qMlEzTf/9sEMYrmdHjsrPlXe0kIP0sMyd7hJl28l0QTNQ2s126fRNLK
wkVMduacGuFGLwqbh7O1QrayWtcni7PKgTW9MfTsjLbg/EWx77auZBTSLfEO+ZKq
2gxxCbM0sID5sgVaw6ku8QJkfiU2fw==
=aQSK
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 bug fixes from Ted Ts'o:
"Fix a number of ext4 bugs"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix special inode number checks in __ext4_iget()
ext4: track writeback errors using the generic tracking infrastructure
ext4: use ext4_write_inode() when fsyncing w/o a journal
ext4: avoid kernel warning when writing the superblock to a dead device
ext4: fix a potential fiemap/page fault deadlock w/ inline_data
ext4: make sure enough credits are reserved for dioread_nolock writes
Fix various regressions introduced in this cycles:
- fix dma-debug tracking for the map_page / map_single consolidatation
- properly stub out DMA mapping symbols for !HAS_DMA builds to avoid
link failures
- fix AMD Gart direct mappings
- setup the dma address for no kernel mappings using the remap
allocator
-----BEGIN PGP SIGNATURE-----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=H9J6
-----END PGP SIGNATURE-----
Merge tag 'dma-mapping-4.21-1' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
"Fix various regressions introduced in this cycles:
- fix dma-debug tracking for the map_page / map_single
consolidatation
- properly stub out DMA mapping symbols for !HAS_DMA builds to avoid
link failures
- fix AMD Gart direct mappings
- setup the dma address for no kernel mappings using the remap
allocator"
* tag 'dma-mapping-4.21-1' of git://git.infradead.org/users/hch/dma-mapping:
dma-direct: fix DMA_ATTR_NO_KERNEL_MAPPING for remapped allocations
x86/amd_gart: fix unmapping of non-GART mappings
dma-mapping: remove a few unused exports
dma-mapping: properly stub out the DMA API for !CONFIG_HAS_DMA
dma-mapping: remove dmam_{declare,release}_coherent_memory
dma-mapping: implement dmam_alloc_coherent using dmam_alloc_attrs
dma-mapping: implement dma_map_single_attrs using dma_map_page_attrs
This adds support for the hardware semaphores found in STM32MP1.
-----BEGIN PGP SIGNATURE-----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=le6D
-----END PGP SIGNATURE-----
Merge tag 'hwlock-v4.21' of git://github.com/andersson/remoteproc
Pull hwspinlock updates from Bjorn Andersson:
"This adds support for the hardware semaphores found in STM32MP1"
* tag 'hwlock-v4.21' of git://github.com/andersson/remoteproc:
hwspinlock: fix return value check in stm32_hwspinlock_probe()
hwspinlock: add STM32 hwspinlock device
dt-bindings: hwlock: Document STM32 hwspinlock bindings
Add support for the Adiantum encryption mode to fscrypt. Adiantum is a
tweakable, length-preserving encryption mode with security provably
reducible to that of XChaCha12 and AES-256, subject to a security bound.
It's also a true wide-block mode, unlike XTS. See the paper
"Adiantum: length-preserving encryption for entry-level processors"
(https://eprint.iacr.org/2018/720.pdf) for more details. Also see
commit 059c2a4d8e ("crypto: adiantum - add Adiantum support").
On sufficiently long messages, Adiantum's bottlenecks are XChaCha12 and
the NH hash function. These algorithms are fast even on processors
without dedicated crypto instructions. Adiantum makes it feasible to
enable storage encryption on low-end mobile devices that lack AES
instructions; currently such devices are unencrypted. On ARM Cortex-A7,
on 4096-byte messages Adiantum encryption is about 4 times faster than
AES-256-XTS encryption; decryption is about 5 times faster.
In fscrypt, Adiantum is suitable for encrypting both file contents and
names. With filenames, it fixes a known weakness: when two filenames in
a directory share a common prefix of >= 16 bytes, with CTS-CBC their
encrypted filenames share a common prefix too, leaking information.
Adiantum does not have this problem.
Since Adiantum also accepts long tweaks (IVs), it's also safe to use the
master key directly for Adiantum encryption rather than deriving
per-file keys, provided that the per-file nonce is included in the IVs
and the master key isn't used for any other encryption mode. This
configuration saves memory and improves performance. A new fscrypt
policy flag is added to allow users to opt-in to this configuration.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAlwv15sPHGNvcmJldEBs
d24ubmV0AAoJEBdDWhNsDH5YxksH/2kdPM4ltyUfb7Nl3ioX6UQdiNf8zzYWXG+6
TllwzGWpI1nK5H+hOGRVLeF/CPNdij/9ScdMhRWTb7Di2mlp3py+5bebZgkTA4KJ
1wy+wnonbtNkHenAjP/e14PL8/JSsyTugADnLwxb4PiURiHiAhvM4jTuxsYAhAQf
LlBoGyfowzI/laNRoh8RonHFtPI3U2oMkhtdx5OIySMlMJNgEIID63KkJsdsIujz
CDUijaFX226s9PiobMNX09Y99fSfOly4yBASabePwrUtVKKL7AJ/vBTgqgdgVTBk
ixTaooEYyLWaPSjMFNYlWH9hCu+N7MZAhrdNNPhHjgGJjTjaFXQ=
=VfF6
-----END PGP SIGNATURE-----
Merge tag 'docs-5.0-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of late-arriving documentation fixes"
* tag 'docs-5.0-fixes' of git://git.lwn.net/linux:
doc: filesystems: fix bad references to nonexistent ext4.rst file
Documentation/admin-guide: update URL of LKML information link
Docs/kernel-api.rst: Remove blk-tag.c reference
- remove an explicit dependency in Kconfig which is implied by another dependency
-----BEGIN PGP SIGNATURE-----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=1Qr0
-----END PGP SIGNATURE-----
Merge tag 'firewire-update' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fixlet from Stefan Richter:
"Remove an explicit dependency in Kconfig which is implied by another
dependency"
* tag 'firewire-update' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: Remove depends on HAS_DMA in case of platform dependency
-----BEGIN PGP SIGNATURE-----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=bh1v
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20190104' of git://git.kernel.dk/linux-block
Pull block updates and fixes from Jens Axboe:
- Pulled in MD changes that Shaohua had queued up for 4.21.
Unfortunately we lost Shaohua late 2018, I'm sending these in on his
behalf.
- In conjunction with the above, I added a CREDITS entry for Shaoua.
- sunvdc queue restart fix (Ming)
* tag 'for-linus-20190104' of git://git.kernel.dk/linux-block:
Add CREDITS entry for Shaohua Li
block: sunvdc: don't run hw queue synchronously from irq context
md: fix raid10 hang issue caused by barrier
raid10: refactor common wait code from regular read/write request
md: remvoe redundant condition check
lib/raid6: add option to skip algo benchmarking
lib/raid6: sort algos in rough performance order
lib/raid6: check for assembler SSSE3 support
lib/raid6: avoid __attribute_const__ redefinition
lib/raid6: add missing include for raid6test
md: remove set but not used variable 'bi_rdev'
-----BEGIN PGP SIGNATURE-----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=hFld
-----END PGP SIGNATURE-----
Merge tag 'drm-next-2019-01-05' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Happy New Year, just decloaking from leave to get some stuff from the
last week in before rc1:
core:
- two regression fixes for damage blob and atomic
i915 gvt:
- Some missed GVT fixes from the original pull
amdgpu:
- new PCI IDs
- SR-IOV fixes
- DC fixes
- Vega20 fixes"
* tag 'drm-next-2019-01-05' of git://anongit.freedesktop.org/drm/drm: (53 commits)
drm: Put damage blob when destroy plane state
drm: fix null pointer dereference on null state pointer
drm/amdgpu: Add new VegaM pci id
drm/ttm: Use drm_debug_printer for all ttm_bo_mem_space_debug output
drm/amdgpu: add Vega20 PSP ASD firmware loading
drm/amd/display: Fix MST dp_blank REG_WAIT timeout
drm/amd/display: validate extended dongle caps
drm/amd/display: Use div_u64 for flip timestamp ns to ms
drm/amdgpu/uvd:Change uvd ring name convention
drm/amd/powerplay: add Vega20 LCLK DPM level setting support
drm/amdgpu: print process info when job timeout
drm/amdgpu/nbio7.4: add hw bug workaround for vega20
drm/amdgpu/nbio6.1: add hw bug workaround for vega10/12
drm/amd/display: Optimize passive update planes.
drm/amd/display: verify lane status before exiting verify link cap
drm/amd/display: Fix bug with not updating VSP infoframe
drm/amd/display: Add retry to read ddc_clock pin
drm/amd/display: Don't skip link training for empty dongle
drm/amd/display: Wait edp HPD to high in detect_sink
drm/amd/display: fix surface update sequence
...
Over the break a few defects were found, so this is a -rc style pull
request of various small things that have been posted.
- An attempt to shorten RCU grace period driven delays showed crashes
during heavier testing, and has been entirely reverted
- A missed merge/rebase error between the advise_mr and ib_device_ops
series
- Some small static analysis driven fixes from Julia and Aditya
- Missed ability to create a XRC_INI in the devx verbs interop series
-----BEGIN PGP SIGNATURE-----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=REsM
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Over the break a few defects were found, so this is a -rc style pull
request of various small things that have been posted.
- An attempt to shorten RCU grace period driven delays showed crashes
during heavier testing, and has been entirely reverted
- A missed merge/rebase error between the advise_mr and ib_device_ops
series
- Some small static analysis driven fixes from Julia and Aditya
- Missed ability to create a XRC_INI in the devx verbs interop
series"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
infiniband/qedr: Potential null ptr dereference of qp
infiniband: bnxt_re: qplib: Check the return value of send_message
IB/ipoib: drop useless LIST_HEAD
IB/core: Add advise_mr to the list of known ops
Revert "IB/mlx5: Fix long EEH recover time with NVMe offloads"
IB/mlx5: Allow XRC INI usage via verbs in DEVX context
- fix fbcon to not cause crash on unregister_framebuffer()
when there is more than one framebuffer (Noralf Trønnes)
- improve support for small rotated displays (Peter Rosin)
- fix probe failure handling in udlfb driver (Dan Carpenter)
- add config option to center the bootup logo (Peter Rosin)
- make FB_BACKLIGHT config option tristate (Rob Clark)
- remove superfluous HAS_DMA dependency for goldfishfb driver
(Geert Uytterhoeven)
- misc fixes (Alexey Khoroshilov, YueHaibing, Colin Ian King,
Lubomir Rintel)
- misc cleanups (Yangtao Li, Wen Yang)
also there is DRM's nouveau driver fix for wrong FB_BACKLIGHT
config option usage (FB_BACKLIGHT is for internal fbdev
subsystem use only)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=rd5j
-----END PGP SIGNATURE-----
Merge tag 'fbdev-v4.21' of git://github.com/bzolnier/linux
Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"This time the pull request is really small.
The most notable changes are fixing fbcon to not cause crash on
unregister_framebuffer() operation when there is more than one
framebuffer, adding config option to center the bootup logo and making
FB_BACKLIGHT config option tristate (which in turn uncovered incorrect
FB_BACKLIGHT usage by DRM's nouveau driver).
Summary:
- fix fbcon to not cause crash on unregister_framebuffer() when there
is more than one framebuffer (Noralf Trønnes)
- improve support for small rotated displays (Peter Rosin)
- fix probe failure handling in udlfb driver (Dan Carpenter)
- add config option to center the bootup logo (Peter Rosin)
- make FB_BACKLIGHT config option tristate (Rob Clark)
- remove superfluous HAS_DMA dependency for goldfishfb driver (Geert
Uytterhoeven)
- misc fixes (Alexey Khoroshilov, YueHaibing, Colin Ian King, Lubomir
Rintel)
- misc cleanups (Yangtao Li, Wen Yang)
also there is DRM's nouveau driver fix for wrong FB_BACKLIGHT config
option usage (FB_BACKLIGHT is for internal fbdev subsystem use only)"
* tag 'fbdev-v4.21' of git://github.com/bzolnier/linux:
drm/nouveau: fix incorrect FB_BACKLIGHT usage in Kconfig
fbdev: fbcon: Fix unregister crash when more than one framebuffer
fbdev: Remove depends on HAS_DMA in case of platform dependency
pxa168fb: trivial typo fix
fbdev: fsl-diu: remove redundant null check on cmap
fbdev: omap2: omapfb: convert to DEFINE_SHOW_ATTRIBUTE
fbdev: uvesafb: fix spelling mistake "memoery" -> "memory"
fbdev: fbmem: add config option to center the bootup logo
fbdev: fbmem: make fb_show_logo_line return the end instead of the height
video: fbdev: pxafb: Fix "WARNING: invalid free of devm_ allocated data"
fbdev: fbmem: behave better with small rotated displays and many CPUs
video: clps711x-fb: release disp device node in probe()
fbdev: make FB_BACKLIGHT a tristate
udlfb: fix some inconsistent NULL checking
Pull i2c updates from Wolfram Sang:
"I2C has only driver updates for you this time.
Mostly new IDs/DT compatibles, also SPDX conversions, small cleanups.
STM32F7 got FastMode+ and PM support, Axxia some reliabilty
improvements"
* 'i2c/for-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (26 commits)
i2c: Add Actions Semiconductor Owl family S700 I2C support
dt-bindings: i2c: Add S700 support for Actions Semi Soc's
i2c: ismt: Add support for Intel Cedar Fork
i2c: tegra: Switch to SPDX identifier
i2c: tegra: Add missing kerneldoc for some fields
i2c: tegra: Cleanup kerneldoc comments
i2c: axxia: support sequence command mode
dt-bindings: i2c: rcar: Add r8a774c0 support
dt-bindings: i2c: sh_mobile: Add r8a774c0 support
i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)
i2c: i2c-cros-ec-tunnel: Switch to SPDX identifier.
i2c: powermac: Use of_node_name_eq for node name comparisons
i2c-axxia: check for error conditions first
i2c-axxia: dedicated function to set client addr
dt-bindings: i2c: Use correct vendor prefix for Atmel
i2c: tegra: replace spin_lock_irqsave with spin_lock in ISR
eeprom: at24: add support for 24c2048
dt-bindings: eeprom: at24: add "atmel,24c2048" compatible string
i2c: i2c-stm32f7: add PM Runtime support
i2c: sh_mobile: add support for r8a77990 (R-Car E3)
...
Pull HID updates from Jiri Kosina:
- high-resolution scrolling support that gracefully handles differences
between MS and Logitech implementations in HW, from Peter Hutterer
and Harry Cutts
- MSI IRQ support for intel-ish driver, from Song Hongyan
- support for new hardware (Cougar 700K, Odys Winbook 13, ASUS FX503VD,
ASUS T101HA) from Daniel M. Lambea, Hans de Goede and Aleix Roca
Nonell
- other small assorted fixups
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (22 commits)
HID: i2c-hid: Add Odys Winbook 13 to descriptor override
HID: lenovo: Add checks to fix of_led_classdev_register
HID: intel-ish-hid: add MSI interrupt support
HID: debug: Change to use DEFINE_SHOW_ATTRIBUTE macro
HID: doc: fix wrong data structure reference for UHID_OUTPUT
HID: intel-ish-hid: fixes incorrect error handling
HID: asus: Add support for the ASUS T101HA keyboard dock
HID: logitech: Use LDJ_DEVICE macro for existing Logitech mice
HID: logitech: Enable high-resolution scrolling on Logitech mice
HID: logitech: Add function to enable HID++ 1.0 "scrolling acceleration"
HID: logitech-hidpp: fix typo, hiddpp to hidpp
HID: input: use the Resolution Multiplier for high-resolution scrolling
HID: core: process the Resolution Multiplier
HID: core: store the collections as a basic tree
Input: add `REL_WHEEL_HI_RES` and `REL_HWHEEL_HI_RES`
HID: input: support Microsoft wireless radio control hotkey
HID: use macros in IS_INPUT_APPLICATION
HID: asus: Add support for the ASUS FX503VD laptop
HID: asus: Add event handler to catch unmapped Asus Vendor UsagePage codes
HID: cougar: Add support for Cougar 700K Gaming Keyboard
...
Pull livepatch update from Jiri Kosina:
"Return value checking fixup in livepatching samples, from Nicholas Mc
Guire"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: check kzalloc return values
You do not have to use define ... endef for filechk_* rules.
For simple cases, the use of assignment looks cleaner, IMHO.
I updated the usage for scripts/Kbuild.include in case somebody
misunderstands the 'define ... endif' is the requirement.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Now that Kbuild automatically creates asm-generic wrappers for missing
mandatory headers, it is redundant to list the same headers in
generic-y and mandatory-y.
Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Some time ago, Sam pointed out a certain degree of overwrap between
generic-y and mandatory-y. (https://lkml.org/lkml/2017/7/10/121)
I tweaked the meaning of mandatory-y a little bit; now it defines the
minimum set of ASM headers that all architectures must have.
If arch does not have specific implementation of a mandatory header,
Kbuild will let it fallback to the asm-generic one by automatically
generating a wrapper. This will allow to drop lots of redundant
generic-y defines.
Previously, "mandatory" was used in the context of UAPI, but I guess
this can be extended to kernel space ASM headers.
Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
These comments are leftovers of commit fcc8487d47 ("uapi: export all
headers under uapi directories").
Prior to that commit, exported headers must be explicitly added to
header-y. Now, all headers under the uapi/ directories are exported.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit removes redundant generic-y defines in
arch/riscv/include/asm/Kbuild.
[1] It is redundant to define the same generic-y in both
arch/$(ARCH)/include/asm/Kbuild and
arch/$(ARCH)/include/uapi/asm/Kbuild.
Remove the following generic-y:
errno.h
fcntl.h
ioctl.h
ioctls.h
ipcbuf.h
mman.h
msgbuf.h
param.h
poll.h
posix_types.h
resource.h
sembuf.h
setup.h
shmbuf.h
signal.h
socket.h
sockios.h
stat.h
statfs.h
swab.h
termbits.h
termios.h
types.h
[2] It is redundant to define generic-y when arch-specific
implementation exists in arch/$(ARCH)/include/asm/*.h
Remove the following generic-y:
cacheflush.h
module.h
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
filechk_* rules often consist of multiple 'echo' lines. They must be
surrounded with { } or ( ) to work correctly. Otherwise, only the
string from the last 'echo' would be written into the target.
Let's take care of that in the 'filechk' in scripts/Kbuild.include
to clean up filechk_* rules.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit 9c2af1c737 ("kbuild: add .DELETE_ON_ERROR special
target"), the target file is automatically deleted on failure.
The boilerplate code
... || { rm -f $@; false; }
is unneeded.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Commit 3a2429e1fa ("kbuild: change if_changed_rule for multi-line
recipe") and commit 4f0e3a57d6 ("kbuild: Add support for DT binding
schema checks") came in via different sub-systems.
This is a follow-up cleanup.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The only/last user of UIMAGE_IN/OUT was removed by commit 4722a3e6b7
("microblaze: fix multiple bugs in arch/microblaze/boot/Makefile").
The input and output should always be $< and $@.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Currently, CONFIG_JUMP_LABEL just means "I _want_ to use jump label".
The jump label is controlled by HAVE_JUMP_LABEL, which is defined
like this:
#if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL)
# define HAVE_JUMP_LABEL
#endif
We can improve this by testing 'asm goto' support in Kconfig, then
make JUMP_LABEL depend on CC_HAS_ASM_GOTO.
Ugly #ifdef HAVE_JUMP_LABEL will go away, and CONFIG_JUMP_LABEL will
match to the real kernel capability.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
As mentioned in the info pages of gas, the '.align' pseudo op's
interpretation of the alignment value is architecture specific.
It might either be a byte value or taken to the power of two.
On ARM it's actually the latter which leads to unnecessary large
alignments of 16 bytes for 32 bit builds or 256 bytes for 64 bit
builds.
Fix this by switching to '.balign' instead which is consistent
across all architectures.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Coccinelle doesn't always have access to the values of named
(#define) constants, and they may likely often be bound to true
and false values anyway, resulting in false positives. So stop
warning about them.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Avoid reporting on the use of an iterator index variable when
the variable is redeclared.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
