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[media] s5p-fimc: Fix bug in capture node open()

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When video pipeline initialization fails, the ST_CAPT_BUSY flag
needs to be cleared before pm_runtime_put_sync is called.
Otherwise the runtime suspend routine tries to suspend device,
rather than just turning it off. Also fix potential null pointer
dereference in fimc_pipeline_shutdown().

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>
This commit is contained in:
Sylwester Nawrocki 2012-05-16 11:35:04 -03:00 • committed by Mauro Carvalho Chehab
parent b6a509df59
commit 90e614bb4c
2 changed files with 6 additions and 2 deletions
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2
drivers/media/video/s5p-fimc/fimc-capture.c
View file

@ -499,10 +499,10 @@ static int fimc_capture_open(struct file *file)
if (ret < 0) {
dev_err(&fimc->pdev->dev,
"Video pipeline initialization failed\n");
clear_bit(ST_CAPT_BUSY, &fimc->state);
pm_runtime_put_sync(&fimc->pdev->dev);
fimc->vid_cap.refcnt--;
v4l2_fh_release(file);
clear_bit(ST_CAPT_BUSY, &fimc->state);
return ret;
}
ret = fimc_capture_ctrls_create(fimc);

6
drivers/media/video/s5p-fimc/fimc-mdevice.c
View file

@ -193,9 +193,13 @@ int __fimc_pipeline_shutdown(struct fimc_pipeline *p)
int fimc_pipeline_shutdown(struct fimc_pipeline *p)
{
struct media_entity *me = &p->subdevs[IDX_SENSOR]->entity;
struct media_entity *me;
int ret;
if (!p || !p->subdevs[IDX_SENSOR])
return -EINVAL;
me = &p->subdevs[IDX_SENSOR]->entity;
mutex_lock(&me->parent->graph_mutex);
ret = __fimc_pipeline_shutdown(p);
mutex_unlock(&me->parent->graph_mutex);