Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...

[pandora-kernel.git] / arch / x86 / include / asm / smpboot_hooks.h

diff --git a/arch/x86/include/asm/smpboot_hooks.h b/arch/x86/include/asm/smpboot_hooks.h
index 725b778..49adfd7 100644 (file)
--- a/arch/x86/include/asm/smpboot_hooks.h
+++ b/arch/x86/include/asm/smpboot_hooks.h
@@ -10,7 +10,11 @@ static inline void smpboot_clear_io_apic_irqs(void)
 
 static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
 {
+       unsigned long flags;
+
+       spin_lock_irqsave(&rtc_lock, flags);
        CMOS_WRITE(0xa, 0xf);
+       spin_unlock_irqrestore(&rtc_lock, flags);
        local_flush_tlb();
        pr_debug("1.\n");
        *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_high)) =
@@ -23,6 +27,8 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
 
 static inline void smpboot_restore_warm_reset_vector(void)
 {
+       unsigned long flags;
+
        /*
         * Install writable page 0 entry to set BIOS data area.
         */
@@ -32,7 +38,9 @@ static inline void smpboot_restore_warm_reset_vector(void)
         * Paranoid:  Set warm reset code and vector here back
         * to default values.
         */
+       spin_lock_irqsave(&rtc_lock, flags);
        CMOS_WRITE(0, 0xf);
+       spin_unlock_irqrestore(&rtc_lock, flags);
 
        *((volatile u32 *)phys_to_virt(apic->trampoline_phys_low)) = 0;
 }