PCI/x86: write_pci_config_byte fix offset

also add write_pci_config_16

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/x86/pci/early.c b/arch/x86/pci/early.c
index 42df4b6606df..8e2821e8dac5 100644
--- a/arch/x86/pci/early.c
+++ b/arch/x86/pci/early.c
@@ -49,7 +49,14 @@ void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val)
 {
         PDprintk("%x writing to %x: %x\n", slot, offset, val);
         outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
-        outb(val, 0xcfc);
+        outb(val, 0xcfc + (offset&3));
+}
+
+void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val)
+{
+        PDprintk("%x writing to %x: %x\n", slot, offset, val);
+        outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+        outw(val, 0xcfc + (offset&2));
 }
 
 int early_pci_allowed(void)