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 <[email protected]> changes in the Google tree. Signed-off-by: Daniel Walker <[email protected]> --- 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. -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
