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-capture.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-capture.c')
| -rw-r--r-- | drivers/media/platform/s5p-fimc/fimc-capture.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/media/platform/s5p-fimc/fimc-capture.c b/drivers/media/platform/s5p-fimc/fimc-capture.c index 3d39d97abaa5..3fc896b8eeae 100644 --- a/drivers/media/platform/s5p-fimc/fimc-capture.c +++ b/drivers/media/platform/s5p-fimc/fimc-capture.c @@ -1774,9 +1774,13 @@ static int fimc_capture_subdev_registered(struct v4l2_subdev *sd) if (ret) return ret; + fimc->pipeline_ops = v4l2_get_subdev_hostdata(sd); + ret = fimc_register_capture_device(fimc, sd->v4l2_dev); - if (ret) + if (ret) { fimc_unregister_m2m_device(fimc); + fimc->pipeline_ops = NULL; + } return ret; } @@ -1793,6 +1797,7 @@ static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd) if (video_is_registered(&fimc->vid_cap.vfd)) { video_unregister_device(&fimc->vid_cap.vfd); media_entity_cleanup(&fimc->vid_cap.vfd.entity); + fimc->pipeline_ops = NULL; } kfree(fimc->vid_cap.ctx); fimc->vid_cap.ctx = NULL; |