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Diffstat (limited to 'arch/x86/pci/olpc.c')
-rw-r--r--arch/x86/pci/olpc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/pci/olpc.c b/arch/x86/pci/olpc.c
index 13700ec8e2e4..5262603b04d9 100644
--- a/arch/x86/pci/olpc.c
+++ b/arch/x86/pci/olpc.c
@@ -206,6 +206,8 @@ static int pci_olpc_read(unsigned int seg, unsigned int bus,
{
uint32_t *addr;
+ WARN_ON(seg);
+
/* Use the hardware mechanism for non-simulated devices */
if (!is_simulated(bus, devfn))
return pci_direct_conf1.read(seg, bus, devfn, reg, len, value);
@@ -264,6 +266,8 @@ static int pci_olpc_read(unsigned int seg, unsigned int bus,
static int pci_olpc_write(unsigned int seg, unsigned int bus,
unsigned int devfn, int reg, int len, uint32_t value)
{
+ WARN_ON(seg);
+
/* Use the hardware mechanism for non-simulated devices */
if (!is_simulated(bus, devfn))
return pci_direct_conf1.write(seg, bus, devfn, reg, len, value);