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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>
Ben Nizette 16 ani în urmă
părinte
comite
29fa98bd9b
1 a modificat fișierele cu 1 adăugiri și 1 ștergeri
  1. 1 1
      drivers/input/touchscreen/tsc2007.c

+ 1 - 1
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);
 	}