ARM: LPC32xx: irq.c: Clear latched event

commit 94ed7830cba4dce57b18a2926b5d826bfd184bd6 upstream.

This patch fixes the wakeup disable function by clearing latched events.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm/mach-lpc32xx/irq.c b/arch/arm/mach-lpc32xx/irq.c
index 4eae566..965b1d6 100644 (file)
--- a/arch/arm/mach-lpc32xx/irq.c
+++ b/arch/arm/mach-lpc32xx/irq.c
@@ -305,9 +305,18 @@ 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);