i8253: Convert i8253_lock to raw_spinlock

i8253_lock needs to be a real spinlock in preempt-rt, i.e. it can
not be converted to a sleeping lock.

Convert it to raw_spinlock and fix up all users.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Cc: Jens Axboe <jens.axboe@oracle.com>
LKML-Reference: <20100217163751.030764372@linutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index 031aa887b0eb..c4f9182ca3ac 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -1224,7 +1224,7 @@ static void reinit_timer(void)
 #ifdef INIT_TIMER_AFTER_SUSPEND
         unsigned long flags;
 
-        spin_lock_irqsave(&i8253_lock, flags);
+        raw_spin_lock_irqsave(&i8253_lock, flags);
         /* set the clock to HZ */
         outb_pit(0x34, PIT_MODE);               /* binary, mode 2, LSB/MSB, ch 0 */
         udelay(10);
@@ -1232,7 +1232,7 @@ static void reinit_timer(void)
         udelay(10);
         outb_pit(LATCH >> 8, PIT_CH0);  /* MSB */
         udelay(10);
-        spin_unlock_irqrestore(&i8253_lock, flags);
+        raw_spin_unlock_irqrestore(&i8253_lock, flags);
 #endif
 }