There's a resource race around disable_irq. Using the nosync
version allows the function to continue and prevents the hang.
Adapted from Arve Hjønnevåg <arve@xxxxxxxxxxx> changes in the Google tree.
Signed-off-by: Daniel Walker <dwalker@xxxxxxxxxxxxxx>
---
drivers/video/msm/mdp.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/video/msm/mdp.c b/drivers/video/msm/mdp.c
index 3c28db0..2b5bf79 100644
--- a/drivers/video/msm/mdp.c
+++ b/drivers/video/msm/mdp.c
@@ -90,7 +90,7 @@ static int locked_disable_mdp_irq(struct mdp_info *mdp, uint32_t mask)
mdp_irq_mask &= ~(mask);
/* if no one is waiting on the interrupt, disable it */
if (!mdp_irq_mask) {
- disable_irq(mdp->irq);
+ disable_irq_nosync(mdp->irq);
if (clk)
clk_disable(clk);
}
--
1.7.0.4
--
Sent by a consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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