korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-13 14:24:11 +08:00
Code Issues Packages Projects Releases Wiki Activity

mfd: Base interrupt for twl4030-irq must be one-shot

Browse Source 
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>
This commit is contained in:
NeilBrown 2011-11-27 07:17:41 +11:00 committed by Samuel Ortiz
parent 8f6a459a9d
commit 286f8f3cd6
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/mfd/twl4030-irq.c
View File

@ -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;