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authorNeilBrown <neilb@suse.de>2011-11-27 07:17:41 +1100
committerSamuel Ortiz <sameo@linux.intel.com>2011-12-20 18:53:25 +0100
commit286f8f3cd615177d5d0f8af8059a3fa39f51fa97 (patch)
tree13420240fc5b4a9acb78272e328f5653daab30a5 /drivers/mfd/twl4030-irq.c
parent8f6a459a9daa6ce76d7c192f2cb3047fffb45ec8 (diff)
downloadlinux-286f8f3cd615177d5d0f8af8059a3fa39f51fa97.tar.bz2
mfd: Base interrupt for twl4030-irq must be one-shot
As the interrupt source is only cleared by the threaded interrupt service routine, we need to make the base interrupt IRQF_ONESHOT. Without this, the first interrupt from the TWL4030 cause the CPU to enter an infinite loop trying to handle to interrupt but never clearing it. Signed-off-by: NeilBrown <neilb@suse.de> Tested-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/twl4030-irq.c')
-rw-r--r--drivers/mfd/twl4030-irq.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index f062c8cc6c38..3d3d6ed48f8d 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -733,8 +733,9 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
}
/* install an irq handler to demultiplex the TWL4030 interrupt */
- status = request_threaded_irq(irq_num, NULL, handle_twl4030_pih, 0,
- "TWL4030-PIH", NULL);
+ status = request_threaded_irq(irq_num, NULL, handle_twl4030_pih,
+ IRQF_ONESHOT,
+ "TWL4030-PIH", NULL);
if (status < 0) {
pr_err("twl4030: could not claim irq%d: %d\n", irq_num, status);
goto fail_rqirq;