From 7ba1c6c88c945b065a75094830f6b76f414e42ad Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 10 Jul 2006 04:44:59 -0700 Subject: [PATCH] [PATCH] get_cmos_time() locking fix (lockdep) rtc_lock is supposed to be irq-safe. Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/time.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c index 316421a7f56f..8705c0f05788 100644 --- a/arch/i386/kernel/time.c +++ b/arch/i386/kernel/time.c @@ -206,15 +206,16 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) 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; } -- 2.39.5