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Filename Latest commit message Latest commit date
Douglas Anderson 0226ac138f UPSTREAM: ath10k: Wait until copy complete is actually done before completing 
[ Upstream commit 8f9ed93d09a97444733d492a3bbf66bcb786a777 ]

On wcn3990 we have "per_ce_irq = true".  That makes the
ath10k_ce_interrupt_summary() function always return 0xfff. The
ath10k_ce_per_engine_service_any() function will see this and think
that _all_ copy engines have an interrupt.  Without checking, the
ath10k_ce_per_engine_service() assumes that if it's called that the
"copy complete" (cc) interrupt fired.  This combination seems bad.

Let's add a check to make sure that the "copy complete" interrupt
actually fired in ath10k_ce_per_engine_service().

This might fix a hard-to-reproduce failure where it appears that the
copy complete handlers run before the copy is really complete.
Specifically a symptom was that we were seeing this on a Qualcomm
sc7180 board:
  arm-smmu 15000000.iommu: Unhandled context fault:
  fsr=0x402, iova=0x7fdd45780, fsynr=0x30003, cbfrsynra=0xc1, cb=10

Even on platforms that don't have wcn3990 this still seems like it
would be a sane thing to do.  Specifically the current IRQ handler
comments indicate that there might be other misc interrupt sources
firing that need to be cleared.  If one of those sources was the one
that caused the IRQ handler to be called it would also be important to
double-check that the interrupt we cared about actually fired.

Tested-on: WCN3990 SNOC WLAN.HL.3.2.2-00490-QCAHLSWMTPL-1

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200609082015.1.Ife398994e5a0a6830e4d4a16306ef36e0144e7ba@changeid
Stable-dep-of: 170c75d43a77 ("ath10k: Don't touch the CE interrupt registers after power up")
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 146449535
Change-Id: I2ed2f1f7b97a27c741341bc6044450b68234114e
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
(cherry picked from android11-5.4-lts commit 366df9ecbc)
2024-01-30 21:33:20 +05:30
android ANDROID: ABI: Update allowed list for QCOM 2023-12-06 01:50:50 +00:00
arch This is the 5.4.265 stable release 2023-12-21 12:17:30 +00:00
block This is the 5.4.265 stable release 2023-12-21 12:17:30 +00:00
certs
crypto This is the 5.4.262 stable release 2023-11-29 10:18:14 +00:00
Documentation Merge 5.4.261 into android11-5.4-lts 2023-11-27 11:27:01 +00:00
drivers UPSTREAM: ath10k: Wait until copy complete is actually done before completing 2024-01-30 21:33:20 +05:30
fs This is the 5.4.265 stable release 2023-12-21 12:17:30 +00:00
include Merge tag 'android11-5.4.265_r00' into branch 'android11-5.4' 2024-01-09 13:26:54 +00:00
init
ipc
kernel Revert "cred: switch to using atomic_long_t" 2024-01-03 17:00:08 +00:00
lib This is the 5.4.260 stable release 2023-11-08 11:17:10 +00:00
LICENSES
mm This is the 5.4.262 stable release 2023-11-29 10:18:14 +00:00
net Merge tag 'android11-5.4.265_r00' into branch 'android11-5.4' 2024-01-09 13:26:54 +00:00
samples
scripts Merge tag 'android11-5.4.265_r00' into branch 'android11-5.4' 2024-01-09 13:26:54 +00:00
security This is the 5.4.263 stable release 2023-12-11 12:08:17 +00:00
sound Merge tag 'android11-5.4.265_r00' into branch 'android11-5.4' 2024-01-09 13:26:54 +00:00
tools This is the 5.4.264 stable release 2023-12-14 13:03:30 +00:00
usr
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build.config.allmodconfig.aarch64
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build.config.allmodconfig.x86_64
build.config.arm
build.config.common
build.config.db845c
build.config.gki
build.config.gki-debug.aarch64
build.config.gki-debug.x86_64
build.config.gki.aarch64
build.config.gki.x86_64
build.config.gki_kasan
build.config.gki_kasan.aarch64
build.config.gki_kasan.x86_64
build.config.gki_kprobes
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build.config.gki_kprobes.x86_64
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Makefile This is the 5.4.265 stable release 2023-12-21 12:17:30 +00:00
OWNERS ANDROID: Use GKI Dr. No OWNERS file 2023-12-04 13:28:17 +00:00
README
README.md

README.md

How do I submit patches to Android Common Kernels

  1. BEST: Make all of your changes to upstream Linux. If appropriate, backport to the stable releases. These patches will be merged automatically in the corresponding common kernels. If the patch is already in upstream Linux, post a backport of the patch that conforms to the patch requirements below.

  2. LESS GOOD: Develop your patches out-of-tree (from an upstream Linux point-of-view). Unless these are fixing an Android-specific bug, these are very unlikely to be accepted unless they have been coordinated with kernel-team@android.com. If you want to proceed, post a patch that conforms to the patch requirements below.

Common Kernel patch requirements

  • All patches must conform to the Linux kernel coding standards and pass script/checkpatch.pl
  • Patches shall not break gki_defconfig or allmodconfig builds for arm, arm64, x86, x86_64 architectures (see https://source.android.com/setup/build/building-kernels)
  • If the patch is not merged from an upstream branch, the subject must be tagged with the type of patch: UPSTREAM:, BACKPORT:, FROMGIT:, FROMLIST:, or ANDROID:.
  • All patches must have a Change-Id: tag (see https://gerrit-review.googlesource.com/Documentation/user-changeid.html)
  • If an Android bug has been assigned, there must be a Bug: tag.
  • All patches must have a Signed-off-by: tag by the author and the submitter

Additional requirements are listed below based on patch type

Requirements for backports from mainline Linux: UPSTREAM:, BACKPORT:

  • If the patch is a cherry-pick from Linux mainline with no changes at all
    • tag the patch subject with UPSTREAM:.
    • add upstream commit information with a (cherry-picked from ...) line
    • Example:
      • if the upstream commit message is
        important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

    - then Joe Smith would upload the patch for the common kernel as

        UPSTREAM: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        (cherry-picked from c31e73121f4c1ec41143423ac6ce3ce6dafdcec1)
        Signed-off-by: Joe Smith <joe.smith@foo.org>
  • If the patch requires any changes from the upstream version, tag the patch with BACKPORT: instead of UPSTREAM:.
    • use the same tags as UPSTREAM:
    • add comments about the changes under the (cherry-picked from ...) line
    • Example:
        BACKPORT: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        (cherry-picked from c31e73121f4c1ec41143423ac6ce3ce6dafdcec1)
        [ Resolved minor conflict in drivers/foo/bar.c ]
        Signed-off-by: Joe Smith <joe.smith@foo.org>

Requirements for other backports: FROMGIT:, FROMLIST:,

  • If the patch has been merged into an upstream maintainer tree, but has not yet been merged into Linux mainline
    • tag the patch subject with FROMGIT:
    • add info on where the patch came from as (cherry picked from commit <sha1> <repo> <branch>). This must be a stable maintainer branch (not rebased, so don't use linux-next for example).
    • if changes were required, use BACKPORT: FROMGIT:
    • Example:
      • if the commit message in the maintainer tree is
        important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

    - then Joe Smith would upload the patch for the common kernel as

        FROMGIT: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        (cherry picked from commit 878a2fd9de10b03d11d2f622250285c7e63deace
         https://git.kernel.org/pub/scm/linux/kernel/git/foo/bar.git test-branch)
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        Signed-off-by: Joe Smith <joe.smith@foo.org>
  • If the patch has been submitted to LKML, but not accepted into any maintainer tree
    • tag the patch subject with FROMLIST:
    • add a Link: tag with a link to the submittal on lore.kernel.org
    • if changes were required, use BACKPORT: FROMLIST:
    • Example:
        FROMLIST: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        Link: https://lore.kernel.org/lkml/20190619171517.GA17557@someone.com/
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        Signed-off-by: Joe Smith <joe.smith@foo.org>

Requirements for Android-specific patches: ANDROID:

  • If the patch is fixing a bug to Android-specific code
    • tag the patch subject with ANDROID:
    • add a Fixes: tag that cites the patch with the bug
    • Example:
        ANDROID: fix android-specific bug in foobar.c

        This is the detailed description of the important fix

        Fixes: 1234abcd2468 ("foobar: add cool feature")
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        Signed-off-by: Joe Smith <joe.smith@foo.org>
  • If the patch is a new feature
    • tag the patch subject with ANDROID:
    • add a Bug: tag with the Android bug (required for android-specific features)