[PATCH] rtc: lockdep fix/workaround

[linux-drm-fsl-dcu.git] / drivers / char / rtc.c

diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 6e6a7c7a7eff191bc56f1d634afed8bdd85f9304..ab6429b4a84e424a9e390d3946bbd1ff6a8c316f 100644 (file)
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -209,11 +209,12 @@ static const unsigned char days_in_mo[] =
  */
 static inline unsigned char rtc_is_updating(void)
 {
+       unsigned long flags;
        unsigned char uip;
 
-       spin_lock_irq(&rtc_lock);
+       spin_lock_irqsave(&rtc_lock, flags);
        uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
-       spin_unlock_irq(&rtc_lock);
+       spin_unlock_irqrestore(&rtc_lock, flags);
        return uip;
 }