diff options
| author | Fabian Frederick <fabf@skynet.be> | 2015-02-20 21:12:54 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-03-03 17:15:42 +0300 |
| commit | f35593fdc8851aa28f6949bd48fe90653d383017 (patch) | |
| tree | 3a531488b29fbd73f4527528633892f81a8013ef /drivers/media/common/saa7146 | |
| parent | 809abdbf46377abe39a72884d026979bb1dbd6d3 (diff) | |
| download | linux-f35593fdc8851aa28f6949bd48fe90653d383017.tar.xz | |
[media] saa7146: replace current->state by set_current_state()
Use helper functions to access current->state.
Direct assignments are prone to races and therefore buggy.
current->state = TASK_RUNNING can be replaced by __set_current_state()
Thanks to Peter Zijlstra for the exact definition of the problem.
Suggested-By: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/common/saa7146')
| -rw-r--r-- | drivers/media/common/saa7146/saa7146_vbi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/common/saa7146/saa7146_vbi.c b/drivers/media/common/saa7146/saa7146_vbi.c index 1e71e374bbfe..2da995758778 100644 --- a/drivers/media/common/saa7146/saa7146_vbi.c +++ b/drivers/media/common/saa7146/saa7146_vbi.c @@ -95,7 +95,7 @@ static int vbi_workaround(struct saa7146_dev *dev) /* prepare to wait to be woken up by the irq-handler */ add_wait_queue(&vv->vbi_wq, &wait); - current->state = TASK_INTERRUPTIBLE; + set_current_state(TASK_INTERRUPTIBLE); /* start rps1 to enable workaround */ saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle); @@ -106,7 +106,7 @@ static int vbi_workaround(struct saa7146_dev *dev) DEB_VBI("brs bug workaround %d/1\n", i); remove_wait_queue(&vv->vbi_wq, &wait); - current->state = TASK_RUNNING; + __set_current_state(TASK_RUNNING); /* disable rps1 irqs */ SAA7146_IER_DISABLE(dev,MASK_28); |