2 files changed, 12 insertions, 1 deletions

diff --git a/arch/mips/pci/ops-loongson2.c b/arch/mips/pci/ops-loongson2.c
index 2bb4057bf6c7..d657ee0bc131 100644
--- a/arch/mips/pci/ops-loongson2.c
+++ b/arch/mips/pci/ops-loongson2.c
@@ -180,15 +180,21 @@ struct pci_ops loongson_pci_ops = {
 };
 
 #ifdef CONFIG_CS5536
+DEFINE_RAW_SPINLOCK(msr_lock);
+
 void _rdmsr(u32 msr, u32 *hi, u32 *lo)
 {
         struct pci_bus bus = {
                 .number = PCI_BUS_CS5536
         };
         u32 devfn = PCI_DEVFN(PCI_IDSEL_CS5536, 0);
+        unsigned long flags;
+
+        raw_spin_lock_irqsave(&msr_lock, flags);
         loongson_pcibios_write(&bus, devfn, PCI_MSR_ADDR, 4, msr);
         loongson_pcibios_read(&bus, devfn, PCI_MSR_DATA_LO, 4, lo);
         loongson_pcibios_read(&bus, devfn, PCI_MSR_DATA_HI, 4, hi);
+        raw_spin_unlock_irqrestore(&msr_lock, flags);
 }
 EXPORT_SYMBOL(_rdmsr);
 
@@ -198,9 +204,13 @@ void _wrmsr(u32 msr, u32 hi, u32 lo)
                 .number = PCI_BUS_CS5536
         };
         u32 devfn = PCI_DEVFN(PCI_IDSEL_CS5536, 0);
+        unsigned long flags;
+
+        raw_spin_lock_irqsave(&msr_lock, flags);
         loongson_pcibios_write(&bus, devfn, PCI_MSR_ADDR, 4, msr);
         loongson_pcibios_write(&bus, devfn, PCI_MSR_DATA_LO, 4, lo);
         loongson_pcibios_write(&bus, devfn, PCI_MSR_DATA_HI, 4, hi);
+        raw_spin_unlock_irqrestore(&msr_lock, flags);
 }
 EXPORT_SYMBOL(_wrmsr);
 #endif
diff --git a/arch/mips/pci/pci-sb1250.c b/arch/mips/pci/pci-sb1250.c
index ada24e6f951f..1711e8e101bc 100644
--- a/arch/mips/pci/pci-sb1250.c
+++ b/arch/mips/pci/pci-sb1250.c
@@ -37,6 +37,7 @@
 #include <linux/mm.h>
 #include <linux/console.h>
 #include <linux/tty.h>
+#include <linux/vt.h>
 
 #include <asm/io.h>
 
@@ -254,7 +255,7 @@ static int __init sb1250_pcibios_init(void)
          * XXX ehs: Should this happen in PCI Device mode?
          */
         io_map_base = ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES, 1024 * 1024);
-        sb1250_controller.io_map_base = io_map_base;
+        sb1250_controller.io_map_base = (unsigned long)io_map_base;
         set_io_port_base((unsigned long)io_map_base);
 
 #ifdef CONFIG_SIBYTE_HAS_LDT