Commit Graph

1060098 Commits

Author SHA1 Message Date
Alex Deucher
b95dc06af3 drm/amdgpu: disable runpm if we are the primary adapter
If we are the primary adapter (i.e., the one used by the firwmare
framebuffer), disable runtime pm.  This fixes a regression caused
by commit 55285e21f0 which results in the displays waking up
shortly after they go to sleep due to the device coming out of
runtime suspend and sending a hotplug uevent.

v2: squash in reworked fix from Evan

Fixes: 55285e21f0 ("fbdev/efifb: Release PCI device's runtime PM ref during FB destroy")
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=215203
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1840
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-31 08:57:45 -05:00
Alex Deucher
9a45ac2320 fbdev: fbmem: add a helper to determine if an aperture is used by a fw fb
Add a function for drivers to check if the a firmware initialized
fb is corresponds to their aperture.  This allows drivers to check if the
device corresponds to what the firmware set up as the display device.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=215203
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1840
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-31 08:57:45 -05:00
Evan Quan
eaa090538e drm/amd/pm: keep the BACO feature enabled for suspend
To pair with the workaround which always reset the ASIC in suspend.
Otherwise, the reset which relies on BACO will fail.

Fixes: daf8de0874 ("drm/amdgpu: always reset the asic in suspend (v2)")

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-31 08:56:21 -05:00
Dave Airlie
ce9b333c73 Merge branch 'drm-misc-fixes' of ssh://git.freedesktop.org/git/drm/drm-misc into drm-fixes
This merges two fixes that haven't been sent to me yet, but I wanted to get in.

One amdgpu fix, but one nouveau regression fixer.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2021-12-31 11:40:29 +10:00
Dave Airlie
aeeb82fd61 Merge tag 'amd-drm-fixes-5.16-2021-12-29' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.16-2021-12-29:

amdgpu:
- Fencing fix
- XGMI fix
- VCN regression fix
- IP discovery regression fixes
- Fix runpm documentation
- Suspend/resume fixes
- Yellow Carp display fixes
- MCLK power management fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211229155129.5789-1-alexander.deucher@amd.com
2021-12-30 13:55:48 +10:00
Dave Airlie
05097b19a9 Merge tag 'drm-intel-fixes-2021-12-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
drm/i915 fixes for v5.16:
- Fix possible uninitialized variable
- Fix composite fence seqno icrement on each fence creation

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87h7ark5r5.fsf@intel.com
2021-12-30 12:12:40 +10:00
Angus Wang
ee2698cf79 drm/amd/display: Changed pipe split policy to allow for multi-display pipe split
[WHY]
Current implementation of pipe split policy prevents pipe split with
multiple displays connected, which caused the MCLK speed to be stuck at
max

[HOW]
Changed the pipe split policies so that pipe split is allowed for
multi-display configurations

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1522
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1709
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1655
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1403

Note this is a backport of this commit from amdgpu drm-next for 5.16.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Angus Wang <angus.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2021-12-28 17:02:31 -05:00
Nicholas Kazlauskas
33bb63915f drm/amd/display: Fix USB4 null pointer dereference in update_psp_stream_config
[Why]
A porting error on a previous patch left the block of code that
causes the crash from a NULL pointer dereference.

More specifically, we try to access link_enc before it's assigned in
the USB4 case in the following assignment:

config.dio_output_idx = link_enc->transmitter - TRANSMITTER_UNIPHY_A;

[How]
That assignment occurs later depending on the ASIC version. It's only
needed on DCN31 and only after link_enc is already assigned.

Fixes: 986430446c ("drm/amd/display: fix a crash on USB4 over C20 PHY")
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-28 16:51:24 -05:00
Nicholas Kazlauskas
33735c1c8d drm/amd/display: Set optimize_pwr_state for DCN31
[Why]
We'll exit optimized power state to do link detection but we won't enter
back into the optimized power state.

This could potentially block s2idle entry depending on the sequencing,
but it also means we're losing some power during the transition period.

[How]
Hook up the handler like DCN21. It was also missed like the
exit_optimized_pwr_state callback.

Fixes: 64b1d0e8d5 ("drm/amd/display: Add DCN3.1 HWSEQ")

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Eric Yang <Eric.Yang2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-28 16:51:24 -05:00
Nicholas Kazlauskas
a07f8b9983 drm/amd/display: Send s0i2_rdy in stream_count == 0 optimization
[Why]
Otherwise SMU won't mark Display as idle when trying to perform s2idle.

[How]
Mark the bit in the dcn31 codepath, doesn't apply to older ASIC.

It needed to be split from phy refclk off to prevent entering s2idle
when PSR was engaged but driver was not ready.

Fixes: 118a331516 ("drm/amd/display: Add DCN3.1 clock manager support")

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Eric Yang <Eric.Yang2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-28 16:51:24 -05:00
Lai, Derek
d97e631af2 drm/amd/display: Added power down for DCN10
[Why]
The change of setting a timer callback on boot for 10 seconds is still
working, just lacked power down for DCN10.

[How]
Added power down for DCN10.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Derek Lai <Derek.Lai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-28 16:51:24 -05:00
Charlene Liu
2eb82577a1 drm/amd/display: fix B0 TMDS deepcolor no dislay issue
[why]
B0 PHY C map to F, D map to G driver use logic instance, dmub does the
remap. Driver still need use the right PHY instance to access right HW.

[how]
use phyical instance when program PHY register.

[note]
could move resync_control programming to dmub next.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-28 16:51:24 -05:00
Alex Deucher
ebae897388 drm/amdgpu: no DC support for headless chips
Chips with no display hardware should return false for
DC support.

v2: drop Arcturus and Aldebaran

Fixes: f7f12b2582 ("drm/amdgpu: default to true in amdgpu_device_asic_has_dc_support")
Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reported-by: Tareque Md.Hanif <tarequemd.hanif@yahoo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-28 09:07:30 -05:00
Evan Quan
7be3be2b02 drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform
By setting mp1_state as PP_MP1_STATE_UNLOAD, MP1 will do some proper cleanups and
put itself into a state ready for PNP. That can workaround some random resuming
failure observed on BOCO capable platforms.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-27 13:08:28 -05:00
Alex Deucher
daf8de0874 drm/amdgpu: always reset the asic in suspend (v2)
If the platform suspend happens to fail and the power rail
is not turned off, the GPU will be in an unknown state on
resume, so reset the asic so that it will be in a known
good state on resume even if the platform suspend failed.

v2: handle s0ix

Acked-by: Luben Tuikov <luben.tuikov@amd.com>
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-27 12:16:34 -05:00
Prike Liang
8c45096c60 drm/amd/pm: skip setting gfx cgpg in the s0ix suspend-resume
In the s0ix entry need retain gfx in the gfxoff state,so here need't
set gfx cgpg in the S0ix suspend-resume process. Moreover move the S0ix
check into SMU12 can simplify the code condition check.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1712
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-27 11:57:25 -05:00
Matthew Brost
d46f329a3f drm/i915: Increment composite fence seqno
Increment composite fence seqno on each fence creation.

Fixes: 544460c338 ("drm/i915: Multi-BB execbuf")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211214195913.35735-1-matthew.brost@intel.com
(cherry picked from commit 62eeb9ae13)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2021-12-27 11:33:40 +02:00
Matthew Brost
0f9d36af8f drm/i915: Fix possible uninitialized variable in parallel extension
'prev_engine' was declared inside the output loop and checked in the
inner after at least 1 pass of either loop. The variable should be
declared outside both loops as it needs to be persistent across the
entire loop structure.

Fixes: e5e32171a2 ("drm/i915/guc: Connect UAPI to GuC multi-lrc interface")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211219001909.24348-1-matthew.brost@intel.com
(cherry picked from commit cbffbac9c1)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2021-12-27 11:33:34 +02:00
Linus Torvalds
fc74e0a40e Linux 5.16-rc7 2021-12-26 13:17:17 -08:00
Linus Torvalds
e8ffcd3ab0 Merge tag 'x86_urgent_for_v5.16_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:

 - Prevent potential undefined behavior due to shifting pkey constants
   into the sign bit

 - Move the EFI memory reservation code *after* the efi= cmdline parsing
   has happened

 - Revert two commits which turned out to be the wrong direction to
   chase when accommodating early memblock reservations consolidation
   and command line parameters parsing

* tag 'x86_urgent_for_v5.16_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/pkey: Fix undefined behaviour with PKRU_WD_BIT
  x86/boot: Move EFI range reservation after cmdline parsing
  Revert "x86/boot: Pull up cmdline preparation and early param parsing"
  Revert "x86/boot: Mark prepare_command_line() __init"
2021-12-26 10:28:55 -08:00
Linus Torvalds
2afa90bd1c Merge tag 'objtool_urgent_for_v5.16_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Borislav Petkov:

 - Prevent clang from reordering the reachable annotation in
   an inline asm statement without inputs

 - Fix objtool builds on non-glibc systems due to undefined
   __always_inline

* tag 'objtool_urgent_for_v5.16_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  compiler.h: Fix annotation macro misplacement with Clang
  uapi: Fix undefined __always_inline on non-glibc systems
2021-12-26 10:19:40 -08:00
Linus Torvalds
438645193e Merge tag 'pinctrl-v5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
 "Some hopefully final pin control fixes for the v5.16 kernel:

   - Fix an out-of-bounds bug in the Mediatek driver

   - Fix an init order bug in the Broadcom BCM2835 driver

   - Fix a GPIO offset bug in the STM32 driver"

* tag 'pinctrl-v5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: stm32: consider the GPIO offset to expose all the GPIO lines
  pinctrl: bcm2835: Change init order for gpio hogs
  pinctrl: mediatek: fix global-out-of-bounds issue
2021-12-25 20:00:09 -08:00
Linus Torvalds
e2ae0d4a6b Merge tag 'hwmon-for-v5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
 "A couple of lm90 driver fixes. None of them are critical, but they
  should nevertheless be fixed"

* tag 'hwmon-for-v5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (lm90) Do not report 'busy' status bit as alarm
  hwmom: (lm90) Fix citical alarm status for MAX6680/MAX6681
  hwmon: (lm90) Drop critical attribute support for MAX6654
  hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations
  hwmon: (lm90) Fix usage of CONFIG2 register in detect function
2021-12-25 13:08:22 -08:00
Linus Torvalds
5b5e3d0347 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
 "A few small updates to drivers.

  Of note we are now deferring probes of i8042 on some Asus devices as
  the controller is not ready to respond to queries first time around
  when the driver is compiled into the kernel"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elants_i2c - do not check Remark ID on eKTH3900/eKTH5312
  Input: atmel_mxt_ts - fix double free in mxt_read_info_block
  Input: goodix - fix memory leak in goodix_firmware_upload
  Input: goodix - add id->model mapping for the "9111" model
  Input: goodix - try not to touch the reset-pin on x86/ACPI devices
  Input: i8042 - enable deferred probe quirk for ASUS UM325UA
  Input: elantech - fix stack out of bound access in elantech_change_report_id()
  Input: iqs626a - prohibit inlining of channel parsing functions
  Input: i8042 - add deferred probe support
2021-12-25 13:00:14 -08:00
Linus Torvalds
d0cc67b278 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "9 patches.

  Subsystems affected by this patch series: mm (kfence, mempolicy,
  memory-failure, pagemap, pagealloc, damon, and memory-failure),
  core-kernel, and MAINTAINERS"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()
  mm/damon/dbgfs: protect targets destructions with kdamond_lock
  mm/page_alloc: fix __alloc_size attribute for alloc_pages_exact_nid
  mm: delete unsafe BUG from page_cache_add_speculative()
  mm, hwpoison: fix condition in free hugetlb page path
  MAINTAINERS: mark more list instances as moderated
  kernel/crash_core: suppress unknown crashkernel parameter warning
  mm: mempolicy: fix THP allocations escaping mempolicy restrictions
  kfence: fix memory leak when cat kfence objects
2021-12-25 12:30:03 -08:00
Liu Shixin
2a57d83c78 mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()
Hulk Robot reported a panic in put_page_testzero() when testing
madvise() with MADV_SOFT_OFFLINE.  The BUG() is triggered when retrying
get_any_page().  This is because we keep MF_COUNT_INCREASED flag in
second try but the refcnt is not increased.

    page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)
    ------------[ cut here ]------------
    kernel BUG at include/linux/mm.h:737!
    invalid opcode: 0000 [#1] PREEMPT SMP
    CPU: 5 PID: 2135 Comm: sshd Tainted: G    B             5.16.0-rc6-dirty #373
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
    RIP: release_pages+0x53f/0x840
    Call Trace:
      free_pages_and_swap_cache+0x64/0x80
      tlb_flush_mmu+0x6f/0x220
      unmap_page_range+0xe6c/0x12c0
      unmap_single_vma+0x90/0x170
      unmap_vmas+0xc4/0x180
      exit_mmap+0xde/0x3a0
      mmput+0xa3/0x250
      do_exit+0x564/0x1470
      do_group_exit+0x3b/0x100
      __do_sys_exit_group+0x13/0x20
      __x64_sys_exit_group+0x16/0x20
      do_syscall_64+0x34/0x80
      entry_SYSCALL_64_after_hwframe+0x44/0xae
    Modules linked in:
    ---[ end trace e99579b570fe0649 ]---
    RIP: 0010:release_pages+0x53f/0x840

Link: https://lkml.kernel.org/r/20211221074908.3910286-1-liushixin2@huawei.com
Fixes: b94e02822d ("mm,hwpoison: try to narrow window race for free pages")
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:56 -08:00
SeongJae Park
3479641796 mm/damon/dbgfs: protect targets destructions with kdamond_lock
DAMON debugfs interface iterates current monitoring targets in
'dbgfs_target_ids_read()' while holding the corresponding
'kdamond_lock'.  However, it also destructs the monitoring targets in
'dbgfs_before_terminate()' without holding the lock.  This can result in
a use_after_free bug.  This commit avoids the race by protecting the
destruction with the corresponding 'kdamond_lock'.

Link: https://lkml.kernel.org/r/20211221094447.2241-1-sj@kernel.org
Reported-by: Sangwoo Bae <sangwoob@amazon.com>
Fixes: 4bc05954d0 ("mm/damon: implement a debugfs-based user space interface")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>	[5.15.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:56 -08:00
Thibaut Sautereau
595ec1973c mm/page_alloc: fix __alloc_size attribute for alloc_pages_exact_nid
The second parameter of alloc_pages_exact_nid is the one indicating the
size of memory pointed by the returned pointer.

Link: https://lkml.kernel.org/r/YbjEgwhn4bGblp//@coeus
Fixes: abd58f38df ("mm/page_alloc: add __alloc_size attributes for better bounds checking")
Signed-off-by: Thibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Daniel Micay <danielmicay@gmail.com>
Cc: Levente Polyak <levente@leventepolyak.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:56 -08:00
Hugh Dickins
94ab10dd42 mm: delete unsafe BUG from page_cache_add_speculative()
It is not easily reproducible, but on 5.16-rc I have several times hit
the VM_BUG_ON_PAGE(PageTail(page), page) in
page_cache_add_speculative(): usually from filemap_get_read_batch() for
an ext4 read, yesterday from next_uptodate_page() from
filemap_map_pages() for a shmem fault.

That BUG used to be placed where page_ref_add_unless() had succeeded,
but now it is placed before folio_ref_add_unless() is attempted: that is
not safe, since it is only the acquired reference which makes the page
safe from racing THP collapse or split.

We could keep the BUG, checking PageTail only when
folio_ref_try_add_rcu() has succeeded; but I don't think it adds much
value - just delete it.

Link: https://lkml.kernel.org/r/8b98fc6f-3439-8614-c3f3-945c659a1aba@google.com
Fixes: 020853b6f5 ("mm: Add folio_try_get_rcu()")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:55 -08:00
Naoya Horiguchi
e37e7b0b3b mm, hwpoison: fix condition in free hugetlb page path
When a memory error hits a tail page of a free hugepage,
__page_handle_poison() is expected to be called to isolate the error in
4kB unit, but it's not called due to the outdated if-condition in
memory_failure_hugetlb().  This loses the chance to isolate the error in
the finer unit, so it's not optimal.  Drop the condition.

This "(p != head && TestSetPageHWPoison(head)" condition is based on the
old semantics of PageHWPoison on hugepage (where PG_hwpoison flag was
set on the subpage), so it's not necessray any more.  By getting to set
PG_hwpoison on head page for hugepages, concurrent error events on
different subpages in a single hugepage can be prevented by
TestSetPageHWPoison(head) at the beginning of memory_failure_hugetlb().
So dropping the condition should not reopen the race window originally
mentioned in commit b985194c8c ("hwpoison, hugetlb:
lock_page/unlock_page does not match for handling a free hugepage")

[naoya.horiguchi@linux.dev: fix "HardwareCorrupted" counter]
  Link: https://lkml.kernel.org/r/20211220084851.GA1460264@u2004

Link: https://lkml.kernel.org/r/20211210110208.879740-1-naoya.horiguchi@linux.dev
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reported-by: Fei Luo <luofei@unicloud.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: <stable@vger.kernel.org>	[5.14+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:55 -08:00
Randy Dunlap
7e5b901e46 MAINTAINERS: mark more list instances as moderated
Some lists that are moderated are not marked as moderated consistently,
so mark them all as moderated.

Link: https://lkml.kernel.org/r/20211209001330.18558-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Conor Culhane <conor.culhane@silvaco.com>
Cc: Ryder Lee <ryder.lee@mediatek.com>
Cc: Jianjun Wang <jianjun.wang@mediatek.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:55 -08:00
Philipp Rudo
71d2bcec2d kernel/crash_core: suppress unknown crashkernel parameter warning
When booting with crashkernel= on the kernel command line a warning
similar to

    Kernel command line: ro console=ttyS0 crashkernel=256M
    Unknown kernel command line parameters "crashkernel=256M", will be passed to user space.

is printed.

This comes from crashkernel= being parsed independent from the kernel
parameter handling mechanism.  So the code in init/main.c doesn't know
that crashkernel= is a valid kernel parameter and prints this incorrect
warning.

Suppress the warning by adding a dummy early_param handler for
crashkernel=.

Link: https://lkml.kernel.org/r/20211208133443.6867-1-prudo@redhat.com
Fixes: 86d1919a4f ("init: print out unknown kernel parameters")
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:55 -08:00
Andrey Ryabinin
3386353406 mm: mempolicy: fix THP allocations escaping mempolicy restrictions
alloc_pages_vma() may try to allocate THP page on the local NUMA node
first:

	page = __alloc_pages_node(hpage_node,
		gfp | __GFP_THISNODE | __GFP_NORETRY, order);

And if the allocation fails it retries allowing remote memory:

	if (!page && (gfp & __GFP_DIRECT_RECLAIM))
    		page = __alloc_pages_node(hpage_node,
					gfp, order);

However, this retry allocation completely ignores memory policy nodemask
allowing allocation to escape restrictions.

The first appearance of this bug seems to be the commit ac5b2c1891
("mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings").

The bug disappeared later in the commit 89c83fb539 ("mm, thp:
consolidate THP gfp handling into alloc_hugepage_direct_gfpmask") and
reappeared again in slightly different form in the commit 76e654cc91
("mm, page_alloc: allow hugepage fallback to remote nodes when
madvised")

Fix this by passing correct nodemask to the __alloc_pages() call.

The demonstration/reproducer of the problem:

    $ mount -oremount,size=4G,huge=always /dev/shm/
    $ echo always > /sys/kernel/mm/transparent_hugepage/defrag
    $ cat mbind_thp.c
    #include <unistd.h>
    #include <sys/mman.h>
    #include <sys/stat.h>
    #include <fcntl.h>
    #include <assert.h>
    #include <stdlib.h>
    #include <stdio.h>
    #include <numaif.h>

    #define SIZE 2ULL << 30
    int main(int argc, char **argv)
    {
        int fd;
        unsigned long long i;
        char *addr;
        pid_t pid;
        char buf[100];
        unsigned long nodemask = 1;

        fd = open("/dev/shm/test", O_RDWR|O_CREAT);
        assert(fd > 0);
        assert(ftruncate(fd, SIZE) == 0);

        addr = mmap(NULL, SIZE, PROT_READ|PROT_WRITE,
                           MAP_SHARED, fd, 0);

        assert(mbind(addr, SIZE, MPOL_BIND, &nodemask, 2, MPOL_MF_STRICT|MPOL_MF_MOVE)==0);
        for (i = 0; i < SIZE; i+=4096) {
          addr[i] = 1;
        }
        pid = getpid();
        snprintf(buf, sizeof(buf), "grep shm /proc/%d/numa_maps", pid);
        system(buf);
        sleep(10000);

        return 0;
    }
    $ gcc mbind_thp.c -o mbind_thp -lnuma
    $ numactl -H
    available: 2 nodes (0-1)
    node 0 cpus: 0 2
    node 0 size: 1918 MB
    node 0 free: 1595 MB
    node 1 cpus: 1 3
    node 1 size: 2014 MB
    node 1 free: 1731 MB
    node distances:
    node   0   1
      0:  10  20
      1:  20  10
    $ rm -f /dev/shm/test; taskset -c 0 ./mbind_thp
    7fd970a00000 bind:0 file=/dev/shm/test dirty=524288 active=0 N0=396800 N1=127488 kernelpagesize_kB=4

Link: https://lkml.kernel.org/r/20211208165343.22349-1-arbn@yandex-team.com
Fixes: ac5b2c1891 ("mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings")
Signed-off-by: Andrey Ryabinin <arbn@yandex-team.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:55 -08:00
Baokun Li
0129ab1f26 kfence: fix memory leak when cat kfence objects
Hulk robot reported a kmemleak problem:

    unreferenced object 0xffff93d1d8cc02e8 (size 248):
      comm "cat", pid 23327, jiffies 4624670141 (age 495992.217s)
      hex dump (first 32 bytes):
        00 40 85 19 d4 93 ff ff 00 10 00 00 00 00 00 00  .@..............
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
      backtrace:
         seq_open+0x2a/0x80
         full_proxy_open+0x167/0x1e0
         do_dentry_open+0x1e1/0x3a0
         path_openat+0x961/0xa20
         do_filp_open+0xae/0x120
         do_sys_openat2+0x216/0x2f0
         do_sys_open+0x57/0x80
         do_syscall_64+0x33/0x40
         entry_SYSCALL_64_after_hwframe+0x44/0xa9
    unreferenced object 0xffff93d419854000 (size 4096):
      comm "cat", pid 23327, jiffies 4624670141 (age 495992.217s)
      hex dump (first 32 bytes):
        6b 66 65 6e 63 65 2d 23 32 35 30 3a 20 30 78 30  kfence-#250: 0x0
        30 30 30 30 30 30 30 37 35 34 62 64 61 31 32 2d  0000000754bda12-
      backtrace:
         seq_read_iter+0x313/0x440
         seq_read+0x14b/0x1a0
         full_proxy_read+0x56/0x80
         vfs_read+0xa5/0x1b0
         ksys_read+0xa0/0xf0
         do_syscall_64+0x33/0x40
         entry_SYSCALL_64_after_hwframe+0x44/0xa9

I find that we can easily reproduce this problem with the following
commands:

	cat /sys/kernel/debug/kfence/objects
	echo scan > /sys/kernel/debug/kmemleak
	cat /sys/kernel/debug/kmemleak

The leaked memory is allocated in the stack below:

    do_syscall_64
      do_sys_open
        do_dentry_open
          full_proxy_open
            seq_open            ---> alloc seq_file
      vfs_read
        full_proxy_read
          seq_read
            seq_read_iter
              traverse          ---> alloc seq_buf

And it should have been released in the following process:

    do_syscall_64
      syscall_exit_to_user_mode
        exit_to_user_mode_prepare
          task_work_run
            ____fput
              __fput
                full_proxy_release  ---> free here

However, the release function corresponding to file_operations is not
implemented in kfence.  As a result, a memory leak occurs.  Therefore,
the solution to this problem is to implement the corresponding release
function.

Link: https://lkml.kernel.org/r/20211206133628.2822545-1-libaokun1@huawei.com
Fixes: 0ce20dd840 ("mm: add Kernel Electric-Fence infrastructure")
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Marco Elver <elver@google.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:55 -08:00
Linus Torvalds
b927dfc67d Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:

 - fix nommu after getting rid of mini-stack for ARMv7

 - fix Thumb2 bug in iWMMXt exception handling

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 9169/1: entry: fix Thumb2 bug in iWMMXt exception handling
  ARM: 9160/1: NOMMU: Reload __secondary_data after PROCINFO_INITFUNC
2021-12-24 09:02:24 -08:00
Linus Torvalds
c8831184c5 Merge tag 'platform-drivers-x86-v5.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
 "Various bug-fixes"

* tag 'platform-drivers-x86-v5.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: intel_pmc_core: fix memleak on registration failure
  platform/x86/intel: Remove X86_PLATFORM_DRIVERS_INTEL
  platform/x86: system76_acpi: Guard System76 EC specific functionality
  platform/x86: apple-gmux: use resource_size() with res
  platform/x86: amd-pmc: only use callbacks for suspend
  platform/mellanox: mlxbf-pmc: Fix an IS_ERR() vs NULL bug in mlxbf_pmc_map_counters
2021-12-24 08:58:23 -08:00
Linus Torvalds
7a29b11da9 Merge tag '5.16-rc5-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull ksmbd fixes from Steve French:
 "Three ksmbd fixes, all for stable as well.

  Two fix potential unitialized memory and one fixes a security problem
  where encryption is unitentionally disabled from some clients"

* tag '5.16-rc5-ksmbd-fixes' of git://git.samba.org/ksmbd:
  ksmbd: disable SMB2_GLOBAL_CAP_ENCRYPTION for SMB 3.1.1
  ksmbd: fix uninitialized symbol 'pntsd_size'
  ksmbd: fix error code in ndr_read_int32()
2021-12-23 17:15:23 -08:00
Linus Torvalds
95b40115a9 Merge tag 'drm-fixes-2021-12-24' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
 "Happy Xmas. Nothing major, one mediatek and a couple of i915 locking
  fixes. There might be a few stragglers over next week or so but I
  don't expect much before next release.

  mediatek:
   - NULL pointer check

  i915:
   - guc submission locking fixes"

* tag 'drm-fixes-2021-12-24' of git://anongit.freedesktop.org/drm/drm:
  drm/i915/guc: Only assign guc_id.id when stealing guc_id
  drm/i915/guc: Use correct context lock when callig clr_context_registered
  drm/mediatek: hdmi: Perform NULL pointer check for mtk_hdmi_conf
2021-12-23 15:43:25 -08:00
Linus Torvalds
a026fa5404 Merge tag 'io_uring-5.16-2021-12-23' of git://git.kernel.dk/linux-block
Pull io_uring fix from Jens Axboe:
 "Single fix for not clearing kiocb->ki_pos back to 0 for a stream,
  destined for stable as well"

* tag 'io_uring-5.16-2021-12-23' of git://git.kernel.dk/linux-block:
  io_uring: zero iocb->ki_pos for stream file types
2021-12-23 15:32:07 -08:00
Linus Torvalds
7fe2bc1b64 Merge branch 'ucount-rlimit-fixes-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull ucount fix from Eric Biederman:
 "This fixes a silly logic bug in the ucount rlimits code, where it was
  comparing against the wrong limit"

* 'ucount-rlimit-fixes-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  ucounts: Fix rlimit max values check
2021-12-23 15:27:02 -08:00
Linus Torvalds
76657eaef4 Merge tag 'net-5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - regressions:

   - revert "tipc: use consistent GFP flags"

  Previous releases - regressions:

   - igb: fix deadlock caused by taking RTNL in runtime resume path

   - accept UFOv6 packages in virtio_net_hdr_to_skb

   - netfilter: fix regression in looped (broad|multi)cast's MAC
     handling

   - bridge: fix ioctl old_deviceless bridge argument

   - ice: xsk: do not clear status_error0 for ntu + nb_buffs descriptor,
     avoid stalls when multiple sockets use an interface

  Previous releases - always broken:

   - inet: fully convert sk->sk_rx_dst to RCU rules

   - veth: ensure skb entering GRO are not cloned

   - sched: fix zone matching for invalid conntrack state

   - bonding: fix ad_actor_system option setting to default

   - nf_tables: fix use-after-free in nft_set_catchall_destroy()

   - lantiq_xrx200: increase buffer reservation to avoid mem corruption

   - ice: xsk: avoid leaking app buffers during clean up

   - tun: avoid double free in tun_free_netdev"

* tag 'net-5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits)
  net: stmmac: dwmac-visconti: Fix value of ETHER_CLK_SEL_FREQ_SEL_2P5M
  r8152: sync ocp base
  r8152: fix the force speed doesn't work for RTL8156
  net: bridge: fix ioctl old_deviceless bridge argument
  net: stmmac: ptp: fix potentially overflowing expression
  net: dsa: tag_ocelot: use traffic class to map priority on injected header
  veth: ensure skb entering GRO are not cloned.
  asix: fix wrong return value in asix_check_host_enable()
  asix: fix uninit-value in asix_mdio_read()
  sfc: falcon: Check null pointer of rx_queue->page_ring
  sfc: Check null pointer of rx_queue->page_ring
  net: ks8851: Check for error irq
  drivers: net: smc911x: Check for error irq
  fjes: Check for error irq
  bonding: fix ad_actor_system option setting to default
  igb: fix deadlock caused by taking RTNL in RPM resume path
  gve: Correct order of processing device options
  net: skip virtio_net_hdr_set_proto if protocol already set
  net: accept UFOv6 packages in virtio_net_hdr_to_skb
  docs: networking: replace skb_hwtstamp_tx with skb_tstamp_tx
  ...
2021-12-23 10:45:55 -08:00
Johan Hovold
26a8b09437 platform/x86: intel_pmc_core: fix memleak on registration failure
In case device registration fails during module initialisation, the
platform device structure needs to be freed using platform_device_put()
to properly free all resources (e.g. the device name).

Fixes: 938835aa90 ("platform/x86: intel_pmc_core: do not create a static struct device")
Cc: stable@vger.kernel.org      # 5.9
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20211222105023.6205-1-johan@kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2021-12-23 19:30:32 +01:00
Nobuhiro Iwamatsu
391e5975c0 net: stmmac: dwmac-visconti: Fix value of ETHER_CLK_SEL_FREQ_SEL_2P5M
ETHER_CLK_SEL_FREQ_SEL_2P5M is not 0 bit of the register. This is a
value, which is 0. Fix from BIT(0) to 0.

Reported-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp>
Fixes: b38dd98ff8 ("net: stmmac: Add Toshiba Visconti SoCs glue driver")
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Link: https://lore.kernel.org/r/20211223073633.101306-1-nobuhiro1.iwamatsu@toshiba.co.jp
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 09:58:13 -08:00
Jakub Kicinski
65fd0c33eb Merge branch 'r8152-fix-bugs'
Hayes Wang says:

====================
r8152: fix bugs

Patch #1 fix the issue of force speed mode for RTL8156.
Patch #2 fix the issue of unexpected ocp_base.
====================

Link: https://lore.kernel.org/r/20211223092702.23841-386-nic_swsd@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 09:56:09 -08:00
Hayes Wang
b24edca309 r8152: sync ocp base
There are some chances that the actual base of hardware is different
from the value recorded by driver, so we have to reset the variable
of ocp_base to sync it.

Set ocp_base to -1. Then, it would be updated and the new base would be
set to the hardware next time.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 09:56:06 -08:00
Hayes Wang
45bf944e67 r8152: fix the force speed doesn't work for RTL8156
It needs to set mdio force mode. Otherwise, link off always occurs when
setting force speed.

Fixes: 195aae321c ("r8152: support new chips")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 09:56:06 -08:00
Linus Torvalds
996a18eb79 Merge tag 'sound-5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
 "Quite a few small fixes, hopefully the last batch for 5.16.

  Most of them are device-specific quirks and/or fixes, and nothing
  looks scary for the late stage"

* tag 'sound-5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek: Fix quirk for Clevo NJ51CU
  ALSA: rawmidi - fix the uninitalized user_pversion
  ALSA: hda: intel-sdw-acpi: go through HDAS ACPI at max depth of 2
  ALSA: hda: intel-sdw-acpi: harden detection of controller
  ALSA: hda/hdmi: Disable silent stream on GLK
  ALSA: hda/realtek: fix mute/micmute LEDs for a HP ProBook
  ASoC: meson: aiu: Move AIU_I2S_MISC hold setting to aiu-fifo-i2s
  ASoC: meson: aiu: fifo: Add missing dma_coerce_mask_and_coherent()
  ASoC: tas2770: Fix setting of high sample rates
  ASoC: rt5682: fix the wrong jack type detected
  ALSA: hda/realtek: Add new alc285-hp-amp-init model
  ALSA: hda/realtek: Amp init fixup for HP ZBook 15 G6
  ASoC: tegra: Restore headphones jack name on Nyan Big
  ASoC: tegra: Add DAPM switches for headphones and mic jack
  ALSA: jack: Check the return value of kstrdup()
  ALSA: drivers: opl3: Fix incorrect use of vp->state
  ASoC: SOF: Intel: pci-tgl: add new ADL-P variant
  ASoC: SOF: Intel: pci-tgl: add ADL-N support
2021-12-23 09:55:58 -08:00
Remi Pommarel
d95a56207c net: bridge: fix ioctl old_deviceless bridge argument
Commit 561d835281 ("bridge: use ndo_siocdevprivate") changed the
source and destination arguments of copy_{to,from}_user in bridge's
old_deviceless() from args[1] to uarg breaking SIOC{G,S}IFBR ioctls.

Commit cbd7ad29a5 ("net: bridge: fix ioctl old_deviceless bridge
argument") fixed only BRCTL_{ADD,DEL}_BRIDGES commands leaving
BRCTL_GET_BRIDGES one untouched.

The fixes BRCTL_GET_BRIDGES as well and has been tested with busybox's
brctl.

Example of broken brctl:
$ brctl show
bridge name     bridge id               STP enabled     interfaces
brctl: can't get bridge name for index 0: No such device or address

Example of fixed brctl:
$ brctl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.000000000000       no

Fixes: 561d835281 ("bridge: use ndo_siocdevprivate")
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/all/20211223153139.7661-2-repk@triplefau.lt/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 09:53:50 -08:00
Xiaoliang Yang
eccffcf465 net: stmmac: ptp: fix potentially overflowing expression
Convert the u32 variable to type u64 in a context where expression of
type u64 is required to avoid potential overflow.

Fixes: e9e3720002 ("net: stmmac: ptp: update tas basetime after ptp adjust")
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Link: https://lore.kernel.org/r/20211223073928.37371-1-xiaoliang.yang_1@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 09:45:55 -08:00
Xiaoliang Yang
ae2778a647 net: dsa: tag_ocelot: use traffic class to map priority on injected header
For Ocelot switches, the CPU injected frames have an injection header
where it can specify the QoS class of the packet and the DSA tag, now it
uses the SKB priority to set that. If a traffic class to priority
mapping is configured on the netdevice (with mqprio for example ...), it
won't be considered for CPU injected headers. This patch make the QoS
class aligned to the priority to traffic class mapping if it exists.

Fixes: 8dce89aa5f ("net: dsa: ocelot: add tagger for Ocelot/Felix switches")
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: Marouen Ghodhbane <marouen.ghodhbane@nxp.com>
Link: https://lore.kernel.org/r/20211223072211.33130-1-xiaoliang.yang_1@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 09:44:59 -08:00