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Filename Latest commit message Latest commit date
Stanley Chu e7e2f8329c UPSTREAM: scsi: ufs: Fix possible power drain during system suspend 
Currently if device needs to do flush or BKOP operations, the device VCC
power is kept during runtime-suspend period.

However, if system suspend is happening while device is runtime-suspended,
such power may not be disabled successfully.

The reasons may be,

1. If current PM level is the same as SPM level, device will keep
   runtime-suspended by ufshcd_system_suspend().

2. Flush recheck work may not be scheduled successfully during system
   suspend period. If it can wake up the system, this is also not the
   intention of the recheck work.

To fix this issue, simply runtime-resume the device if the flush is allowed
during runtime suspend period. Flush capability will be disabled while
leaving runtime suspend, and also not be allowed in system suspend period.

Link: https://lore.kernel.org/r/20201222072905.32221-2-stanley.chu@mediatek.com
Fixes: 51dd905bd2f6 ("scsi: ufs: Fix WriteBooster flush during runtime suspend")
Reviewed-by: Chaotian Jing <chaotian.jing@mediatek.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 1d53864c3617f5235f891ca0fbe9347c4cd35d46)
Bug: 187129171
Signed-off-by: Connor O'Brien <connoro@google.com>
Change-Id: I2c7738084d968fd3987d4876f04ea9c9b4318fb1
2021-05-03 20:56:09 -07:00
android ANDROID: ABI: add pm_system_cancel_wakeup symbol 2021-04-26 09:39:26 +01:00
arch ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +00:00
block ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +00:00
certs
crypto ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +00:00
Documentation ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +00:00
drivers UPSTREAM: scsi: ufs: Fix possible power drain during system suspend 2021-05-03 20:56:09 -07:00
fs UPSTREAM: f2fs: fix double free of unicode map 2021-05-03 20:55:42 -07:00
include ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +00:00
init ANDROID: GKI: Enable DRM_GEM_SHMEM_HELPER 2021-03-20 12:02:49 +00:00
ipc
kernel UPSTREAM: sched/fair: Prefer prev cpu in asymmetric wakeup path 2021-05-03 20:55:31 -07:00
lib
LICENSES
mm ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +00:00
net UPSTREAM: xfrm/compat: Translate by copying XFRMA_UNSPEC attribute 2021-05-03 20:55:11 -07:00
samples This is the 5.4.86 stable release 2020-12-30 12:31:14 +01:00
scripts This is the 5.4.86 stable release 2020-12-30 12:31:14 +01:00
security This is the 5.4.86 stable release 2020-12-30 12:31:14 +01:00
sound This is the 5.4.86 stable release 2020-12-30 12:31:14 +01:00
tools ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +00:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
build.config.aarch64
build.config.allmodconfig
build.config.allmodconfig.aarch64
build.config.allmodconfig.arm
build.config.allmodconfig.x86_64
build.config.arm
build.config.common ANDROID: clang: update to 12.0.5 2021-04-19 19:41:50 +00:00
build.config.db845c ANDROID: db845c: Use FRAGMENT_CONFIG 2021-03-08 19:14:48 +00:00
build.config.gki
build.config.gki-debug.aarch64
build.config.gki-debug.x86_64
build.config.gki.aarch64 ANDROID: GKI: Add IMX KMI symbol list 2021-03-10 20:18:36 +00:00
build.config.gki.x86_64
build.config.gki_kasan ANDROID: build_config: drop CONFIG_KASAN_PANIC_ON_WARN 2021-02-15 18:29:03 +00:00
build.config.gki_kasan.aarch64
build.config.gki_kasan.x86_64
build.config.gki_kprobes ANDROID: Adding kprobes build configs for Cuttlefish 2021-02-28 04:50:28 +00:00
build.config.gki_kprobes.aarch64 ANDROID: Adding kprobes build configs for Cuttlefish 2021-02-28 04:50:28 +00:00
build.config.gki_kprobes.x86_64 ANDROID: Adding kprobes build configs for Cuttlefish 2021-02-28 04:50:28 +00:00
build.config.hikey960
build.config.x86_64
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS UPSTREAM: HID: playstation: initial DualSense USB support. 2021-03-12 17:11:35 -08:00
Makefile This is the 5.4.86 stable release 2020-12-30 12:31:14 +01:00
OWNERS ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-01 13:45:14 +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)