[PATCH 5/7] drivers: video: msm: fix hang on disable_irq

[Daniel Walker <dwalker@codeaurora.org>]

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@android.com> changes in the Google tree.

Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
---
 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.