[PATCH] get_cmos_time() locking fix (lockdep)
rtc_lock is supposed to be irq-safe.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 316421a..8705c0f 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -206,15 +206,16 @@
unsigned long get_cmos_time(void)
{
unsigned long retval;
+ unsigned long flags;
- spin_lock(&rtc_lock);
+ spin_lock_irqsave(&rtc_lock, flags);
if (efi_enabled)
retval = efi_get_time();
else
retval = mach_get_cmos_time();
- spin_unlock(&rtc_lock);
+ spin_unlock_irqrestore(&rtc_lock, flags);
return retval;
}