x86: reboot: remove inb_p usage

We are driving a motherboard port so use a 2uS explicit delay at this
point.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 5b32f0b..5818dc2 100644 (file)
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -319,9 +319,11 @@ static inline void kb_wait(void)
 {
        int i;
 
-       for (i = 0; i < 0x10000; i++)
-               if ((inb_p(0x64) & 0x02) == 0)
+       for (i = 0; i < 0x10000; i++) {
+               if ((inb(0x64) & 0x02) == 0)
                        break;
+               udelay(2);
+       }
 }
 
 void machine_emergency_restart(void)