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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2015-02-24 13:39:49 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-02 22:31:14 +0300 |
| commit | 9be29369598543ff1d4800c2591640bc11ef2197 (patch) | |
| tree | 9e31a367de48684cda8165b37e82343e7352978d /include | |
| parent | bf104c238dc1c7172460853882a545141eaa8222 (diff) | |
| download | linux-9be29369598543ff1d4800c2591640bc11ef2197.tar.xz | |
[media] media: omap3isp: video: Don't call vb2 mmap with queue lock held
videobuf2 has long been subject to AB-BA style deadlocks due to the
queue lock and mmap_sem being taken in different orders for the mmap
operation. The problem has been fixed by making this operation callable
without taking the queue lock, using an mmap_lock internal to videobuf2.
The omap3isp driver still calls the mmap operation with the queue lock
held, resulting in a potential deadlock. As the operation can now be
called without locking the queue, fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions