From 29fa98bd9b50b5e9c17d99e961640ffafb765d71 Mon Sep 17 00:00:00 2001
From: Ben Nizette <bn@niasdigital.com>
Date: Fri, 17 Apr 2009 20:35:57 -0700
Subject: [PATCH] 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 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 4ab070246892..536668fbda22 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);
}