diff options
| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2020-06-03 15:48:19 +0800 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2020-06-29 20:07:55 -0400 |
| commit | d8a71a53366a7be14e73bf5dde57846a23d9fa0d (patch) | |
| tree | 8068a47521b7abb1737c8f86c1b5d5d7a65c572b /crypto/algapi.c | |
| parent | f9aa90e1b8aa2a133d4046223248ab61688445f5 (diff) | |
libata: Use per port sync for detach
[ Upstream commit b5292111de9bb70cba3489075970889765302136 ]
Commit 130f4caf145c ("libata: Ensure ata_port probe has completed before
detach") may cause system freeze during suspend.
Using async_synchronize_full() in PM callbacks is wrong, since async
callbacks that are already scheduled may wait for not-yet-scheduled
callbacks, causes a circular dependency.
Instead of using big hammer like async_synchronize_full(), use async
cookie to make sure port probe are synced, without affecting other
scheduled PM callbacks.
Fixes: 130f4caf145c ("libata: Ensure ata_port probe has completed before detach")
Suggested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: John Garry <john.garry@huawei.com>
BugLink: https://bugs.launchpad.net/bugs/1867983
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'crypto/algapi.c')
0 files changed, 0 insertions, 0 deletions