Gitweb: http://git.kernel.org/linus/29fa98bd9b50b5e9c17d99e961640ffafb765d71
Commit: 29fa98bd9b50b5e9c17d99e961640ffafb765d71
Parent: e4bd3e591c8cc52ccf7a0b27f33aa7a5a19058d7
Author: Ben Nizette <bn@niasdigital.com>
AuthorDate: Fri Apr 17 20:35:57 2009 -0700
Committer: Dmitry Torokhov <dmitry.torokhov@gmail.com>
CommitDate: Fri Apr 17 20:42:00 2009 -0700
Input: tsc2007 - use disable_irq_nosync() in irq handler
disable_irq() waits for all running handlers to complete before
returning. As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock. This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---
drivers/input/touchscreen/tsc2007.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 4ab0702..536668f 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -235,7 +235,7 @@ static irqreturn_t tsc2007_irq(int irq, void *handle)
spin_lock_irqsave(&ts->lock, flags);
if (likely(ts->get_pendown_state())) {
- disable_irq(ts->irq);
+ disable_irq_nosync(ts->irq);
hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_DELAY),
HRTIMER_MODE_REL);
}
--
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