diff options
| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2012-11-22 13:17:19 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-11-27 00:29:31 +0400 |
| commit | 97d66c47277fc801bc1ee93559a848057181ea55 (patch) | |
| tree | 38e5b038cd68529b9fb1a3bfedf2f2ac4f06a9e6 /drivers/media/platform/s5p-fimc/fimc-lite.c | |
| parent | 86163adb8125a4ce85e0b23a50be82bd8c0daf95 (diff) | |
| download | linux-97d66c47277fc801bc1ee93559a848057181ea55.tar.xz | |
[media] s5p-fimc: Prevent race conditions during subdevs registration
Make sure when fimc and fimc-lite capture video node is registered
it has valid pipeline_ops assigned to it. Otherwise when a video
node is opened right after is was registered there, might be an
attempt to use ops that are just being assigned, after function
v4l2_device_register_subdev() returns.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/platform/s5p-fimc/fimc-lite.c')
| -rw-r--r-- | drivers/media/platform/s5p-fimc/fimc-lite.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-fimc/fimc-lite.c b/drivers/media/platform/s5p-fimc/fimc-lite.c index 9db246bed841..23f203e8a7d3 100644 --- a/drivers/media/platform/s5p-fimc/fimc-lite.c +++ b/drivers/media/platform/s5p-fimc/fimc-lite.c @@ -1263,10 +1263,12 @@ static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) return ret; video_set_drvdata(vfd, fimc); + fimc->pipeline_ops = v4l2_get_subdev_hostdata(sd); ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); if (ret < 0) { media_entity_cleanup(&vfd->entity); + fimc->pipeline_ops = NULL; return ret; } @@ -1285,6 +1287,7 @@ static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd) if (video_is_registered(&fimc->vfd)) { video_unregister_device(&fimc->vfd); media_entity_cleanup(&fimc->vfd.entity); + fimc->pipeline_ops = NULL; } } |