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| author | Liguang Zhang <zhangliguang@linux.alibaba.com> | 2020-02-21 17:35:07 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2020-02-27 18:14:14 +0100 |
| commit | c66d52b1026717135c5030c65e344750161d159b (patch) | |
| tree | 4f8a3fe1c45ec321e2e4a9e5473bbc6725ec4638 /drivers/firmware/tegra | |
| parent | firmware: arm_sdei: fix double-lock on hibernate with shared events (diff) | |
| download | linux-c66d52b1026717135c5030c65e344750161d159b.tar.xz linux-c66d52b1026717135c5030c65e344750161d159b.zip | |
firmware: arm_sdei: fix possible double-lock on hibernate error path
We call sdei_reregister_event() with sdei_list_lock held, if the register
fails we call sdei_event_destroy() which also acquires sdei_list_lock
thus creating A-A deadlock.
Add '_llocked' to sdei_reregister_event(), to indicate the list lock
is held, and add a _llocked variant of sdei_event_destroy().
Fixes: da351827240e ("firmware: arm_sdei: Add support for CPU and system power states")
Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
[expanded subject, added wrappers instead of duplicating contents]
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/firmware/tegra')
0 files changed, 0 insertions, 0 deletions