[PATCH 1/2] Input: tsc2007: fix locking method against the

[Kwangwoo Lee]

Without this patch, current driver will emit panic message below:
Kernel panic - not syncing: Fatal exception in interrupt.

The original patch is written by Thierry.

Signed-off-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
Signed-off-by: Kwangwoo Lee <kwangwoo.lee@xxxxxxxxx>
---
 drivers/input/touchscreen/tsc2007.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/input/touchscreen/tsc2007.c
b/drivers/input/touchscreen/tsc2007.c
index 536668f..948e167 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;
 }
-- 
1.5.6.5
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