From 705a76d2d22a2824f45f07d023a380293554e989 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 11 May 2009 08:36:39 -0700 Subject: Input: tsc2007 - fix locking in hrtimer handler Now that hrtimers are always running in hard irq context we can't unconditionally enable interrupts at the end of the timer function. Signed-off-by: Thierry Reding Signed-off-by: Kwangwoo Lee Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/tsc2007.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c index 536668fbda22..948e167557f1 100644 --- a/drivers/input/touchscreen/tsc2007.c +++ b/drivers/input/touchscreen/tsc2007.c @@ -200,8 +200,9 @@ static int tsc2007_read_values(struct tsc2007 *tsc) static enum hrtimer_restart tsc2007_timer(struct hrtimer *handle) { struct tsc2007 *ts = container_of(handle, struct tsc2007, timer); + unsigned long flags; - spin_lock_irq(&ts->lock); + spin_lock_irqsave(&ts->lock, flags); if (unlikely(!ts->get_pendown_state() && ts->pendown)) { struct input_dev *input = ts->input; @@ -222,7 +223,7 @@ static enum hrtimer_restart tsc2007_timer(struct hrtimer *handle) tsc2007_send_event(ts); } - spin_unlock_irq(&ts->lock); + spin_unlock_irqrestore(&ts->lock, flags); return HRTIMER_NORESTART; } -- cgit v1.2.3-59-g8ed1b