Merge branch develop-3.10

[firefly-linux-kernel-4.4.55.git] / arch / x86 / kernel / reboot.c

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 90fd1195f2761b140eaea95ead6fd23d92445873..3876c04feef9dbe9160ee5d3c3488ef15f6235de 100644 (file)
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -36,7 +36,7 @@ void (*pm_power_off)(void);
 EXPORT_SYMBOL(pm_power_off);
 
 static const struct desc_ptr no_idt = {};
-static int reboot_mode;
+static enum reboot_mode reboot_mode;
 enum reboot_type reboot_type = BOOT_ACPI;
 int reboot_force;
 
@@ -88,11 +88,11 @@ static int __init reboot_setup(char *str)
 
                switch (*str) {
                case 'w':
-                       reboot_mode = 0x1234;
+                       reboot_mode = REBOOT_WARM;
                        break;
 
                case 'c':
-                       reboot_mode = 0;
+                       reboot_mode = REBOOT_COLD;
                        break;
 
 #ifdef CONFIG_SMP
@@ -552,6 +552,7 @@ static void native_machine_emergency_restart(void)
        int i;
        int attempt = 0;
        int orig_reboot_type = reboot_type;
+       unsigned short mode;
 
        if (reboot_emergency)
                emergency_vmx_disable_all();
@@ -559,7 +560,8 @@ static void native_machine_emergency_restart(void)
        tboot_shutdown(TB_SHUTDOWN_REBOOT);
 
        /* Tell the BIOS if we want cold or warm reboot */
-       *((unsigned short *)__va(0x472)) = reboot_mode;
+       mode = reboot_mode == REBOOT_WARM ? 0x1234 : 0;
+       *((unsigned short *)__va(0x472)) = mode;
 
        for (;;) {
                /* Could also try the reset bit in the Hammer NB */
@@ -601,7 +603,7 @@ static void native_machine_emergency_restart(void)
 
                case BOOT_EFI:
                        if (efi_enabled(EFI_RUNTIME_SERVICES))
-                               efi.reset_system(reboot_mode ?
+                               efi.reset_system(reboot_mode == REBOOT_WARM ?
                                                 EFI_RESET_WARM :
                                                 EFI_RESET_COLD,
                                                 EFI_SUCCESS, 0, NULL);