ARM: LPC32xx: irq.c: Clear latched event

This patch fixes the wakeup disable function by clearing latched events. Signed-off-by: Roland Stigge <[email protected]> Cc: [email protected]
kawasaki · Feb 27, 2012 · 94ed783 · 94ed783
1 parent 35dd0a7
commit 94ed783
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/arch/arm/mach-lpc32xx/irq.c b/arch/arm/mach-lpc32xx/irq.c
@@ -309,9 +309,18 @@ static int lpc32xx_irq_wake(struct irq_data *d, unsigned int state)
 
 		if (state)
 			eventreg |= lpc32xx_events[d->irq].mask;
-		else
+		else {
 			eventreg &= ~lpc32xx_events[d->irq].mask;
 
+			/*
+			 * When disabling the wakeup, clear the latched
+			 * event
+			 */
+			__raw_writel(lpc32xx_events[d->irq].mask,
+				lpc32xx_events[d->irq].
+				event_group->rawstat_reg);
+		}
+
 		__raw_writel(eventreg,
 			lpc32xx_events[d->irq].event_group->enab_reg);