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| author | Dave Stevenson <dave.stevenson@raspberrypi.org> | 2019-06-29 14:13:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-14 08:11:22 +0200 |
| commit | 4502c43d7f3b3b849dd7230010ad26898b0588e8 (patch) | |
| tree | b23b3f5f469cc6f543bbba543f29adcf920e4b9a /drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c | |
| parent | 22a20b9f6d9f6adb73e3334f861669bf2c55879c (diff) | |
staging: bcm2835-camera: Replace spinlock protecting context_map with mutex
commit 8dedab2903f152aa3cee9ae3d57c828dea0d356e upstream.
The commit "staging: bcm2835-camera: Replace open-coded idr with a struct idr."
replaced an internal implementation of an idr with the standard functions
and a spinlock. idr_alloc(GFP_KERNEL) can sleep whilst calling kmem_cache_alloc
to allocate the new node, but this is not valid whilst in an atomic context
due to the spinlock.
There is no need for this to be a spinlock as a standard mutex is
sufficient.
Fixes: 950fd867c635 ("staging: bcm2835-camera: Replace open-coded idr with a struct idr.")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c')
0 files changed, 0 insertions, 0 deletions