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 <pet...@infradead.org>
Signed-off-by: Fabian Frederick <f...@skynet.be>
---
drivers/media/common/saa7146/saa7146_vbi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/common/saa7146/saa7146_vbi.c
b/drivers/media/common/saa7146/saa7146_vbi.c
index 1e71e37..2da9957 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);
--
2.1.0
--
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