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| author | Jia-Ju Bai <baijiaju1990@163.com> | 2017-06-01 04:17:51 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-07 12:28:50 -0300 |
| commit | a3dbff6eecad72333bae656681331aab27adee4d (patch) | |
| tree | 8d45015d2cc3f36ca0f76e68571e3f831aa132cf /drivers/media/platform/coda/coda-common.c | |
| parent | d989dc20c508cd82e2a95ff5d6c4bb091803f1c8 (diff) | |
| download | linux-a3dbff6eecad72333bae656681331aab27adee4d.tar.bz2 | |
[media] cx18: Fix a sleep-in-atomic bug in snd_cx18_pcm_hw_free
The driver may sleep under a spin lock, and the function call path is:
snd_cx18_pcm_hw_free (acquire the lock by spin_lock_irqsave)
vfree --> may sleep
To fix it, the "substream->runtime->dma_area" is passed to a temporary
value, and mark it NULL when holding the lock. The memory is freed by
vfree through the temporary value outside the lock holding.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
[hans.verkuil@cisco.com: removed unnecessary 'if (dma_area)']
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/coda/coda-common.c')
0 files changed, 0 insertions, 0 deletions