Merge branch 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / arch / x86 / platform / efi / efi.c

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 899e393..cfc588c 100644 (file)
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -79,26 +79,50 @@ early_param("add_efi_memmap", setup_add_efi_memmap);
 
 static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
 {
-       return efi_call_virt2(get_time, tm, tc);
+       unsigned long flags;
+       efi_status_t status;
+
+       spin_lock_irqsave(&rtc_lock, flags);
+       status = efi_call_virt2(get_time, tm, tc);
+       spin_unlock_irqrestore(&rtc_lock, flags);
+       return status;
 }
 
 static efi_status_t virt_efi_set_time(efi_time_t *tm)
 {
-       return efi_call_virt1(set_time, tm);
+       unsigned long flags;
+       efi_status_t status;
+
+       spin_lock_irqsave(&rtc_lock, flags);
+       status = efi_call_virt1(set_time, tm);
+       spin_unlock_irqrestore(&rtc_lock, flags);
+       return status;
 }
 
 static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
                                             efi_bool_t *pending,
                                             efi_time_t *tm)
 {
-       return efi_call_virt3(get_wakeup_time,
-                             enabled, pending, tm);
+       unsigned long flags;
+       efi_status_t status;
+
+       spin_lock_irqsave(&rtc_lock, flags);
+       status = efi_call_virt3(get_wakeup_time,
+                               enabled, pending, tm);
+       spin_unlock_irqrestore(&rtc_lock, flags);
+       return status;
 }
 
 static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
 {
-       return efi_call_virt2(set_wakeup_time,
-                             enabled, tm);
+       unsigned long flags;
+       efi_status_t status;
+
+       spin_lock_irqsave(&rtc_lock, flags);
+       status = efi_call_virt2(set_wakeup_time,
+                               enabled, tm);
+       spin_unlock_irqrestore(&rtc_lock, flags);
+       return status;
 }
 
 static efi_status_t virt_efi_get_variable(efi_char16_t *name,
@@ -164,11 +188,14 @@ static efi_status_t __init phys_efi_set_virtual_address_map(
 static efi_status_t __init phys_efi_get_time(efi_time_t *tm,
                                             efi_time_cap_t *tc)
 {
+       unsigned long flags;
        efi_status_t status;
 
+       spin_lock_irqsave(&rtc_lock, flags);
        efi_call_phys_prelog();
        status = efi_call_phys2(efi_phys.get_time, tm, tc);
        efi_call_phys_epilog();
+       spin_unlock_irqrestore(&rtc_lock, flags);
        return status;
 }