evie/android_kernel_oneplus_msm8998
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Input: tsc2007 - fix locking in hrtimer handler

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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 <thierry.reding@avionic-design.de>
Signed-off-by: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Thierry Reding 2009-05-11 08:36:39 -07:00 • committed by Dmitry Torokhov
parent 9166d0f620
commit 705a76d2d2
1 changed files with 3 additions and 2 deletions
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5
drivers/input/touchscreen/tsc2007.c
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@ -200,8 +200,9 @@ static int tsc2007_read_values(struct tsc2007 *tsc)
static enum hrtimer_restart tsc2007_timer(struct hrtimer *handle) static enum hrtimer_restart tsc2007_timer(struct hrtimer *handle)
{ {
struct tsc2007 *ts = container_of(handle, struct tsc2007, timer); 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)) { if (unlikely(!ts->get_pendown_state() && ts->pendown)) {
struct input_dev *input = ts->input; struct input_dev *input = ts->input;
@ -222,7 +223,7 @@ static enum hrtimer_restart tsc2007_timer(struct hrtimer *handle)
tsc2007_send_event(ts); tsc2007_send_event(ts);
} }
spin_unlock_irq(&ts->lock); spin_unlock_irqrestore(&ts->lock, flags);
return HRTIMER_NORESTART; return HRTIMER_NORESTART;
} }