Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6

[pandora-kernel.git] / arch / x86 / kernel / reboot_fixups_32.c

diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
index 03e1cce..f452726 100644 (file)
--- a/arch/x86/kernel/reboot_fixups_32.c
+++ b/arch/x86/kernel/reboot_fixups_32.c
@@ -1,6 +1,4 @@
 /*
- * linux/arch/i386/kernel/reboot_fixups.c
- *
  * This is a good place to put board specific reboot fixups.
  *
  * List of supported fixups:
@@ -11,8 +9,10 @@
 
 #include <asm/delay.h>
 #include <linux/pci.h>
+#include <linux/interrupt.h>
 #include <asm/reboot_fixups.h>
 #include <asm/msr.h>
+#include <asm/geode.h>
 
 static void cs5530a_warm_reset(struct pci_dev *dev)
 {
@@ -25,11 +25,8 @@ static void cs5530a_warm_reset(struct pci_dev *dev)
 
 static void cs5536_warm_reset(struct pci_dev *dev)
 {
-       /*
-        * 6.6.2.12 Soft Reset (DIVIL_SOFT_RESET)
-        * writing 1 to the LSB of this MSR causes a hard reset.
-        */
-       wrmsrl(0x51400017, 1ULL);
+       /* writing 1 to the LSB of this MSR causes a hard reset */
+       wrmsrl(MSR_DIVIL_SOFT_RESET, 1ULL);
        udelay(50); /* shouldn't get here but be safe and spin a while */
 }
 
@@ -42,6 +39,7 @@ struct device_fixup {
 static struct device_fixup fixups_table[] = {
 { PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset },
 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, cs5536_warm_reset },
+{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SC1100_BRIDGE, cs5530a_warm_reset },
 };
 
 /*
@@ -56,6 +54,11 @@ void mach_reboot_fixups(void)
        struct pci_dev *dev;
        int i;
 
+       /* we can be called from sysrq-B code. In such a case it is
+        * prohibited to dig PCI */
+       if (in_interrupt())
+               return;
+
        for (i=0; i < ARRAY_SIZE(fixups_table); i++) {
                cur = &(fixups_table[i]);
                dev = pci_get_device(cur->vendor, cur->device, NULL);