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-rw-r--r--arch/powerpc/platforms/maple/pci.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index dc05af5156a..ec5c14f5ba4 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -213,6 +213,9 @@ static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn,
if (hose == NULL)
return PCIBIOS_DEVICE_NOT_FOUND;
+ if (offset > 0xff)
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+
addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
if (!addr)
return PCIBIOS_DEVICE_NOT_FOUND;
@@ -245,6 +248,9 @@ static int u3_ht_write_config(struct pci_bus *bus, unsigned int devfn,
if (hose == NULL)
return PCIBIOS_DEVICE_NOT_FOUND;
+ if (offset > 0xff)
+ return PCIBIOS_BAD_REGISTER_NUMBER;
+
addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
if (!addr)
return PCIBIOS_DEVICE_NOT_FOUND;