1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/video/via-camera.c b/drivers/media/video/via-camera.c
index 85d3048c1d67..bb7f17f2a33c 100644
--- a/drivers/media/video/via-camera.c
+++ b/drivers/media/video/via-camera.c
@@ -1332,6 +1332,8 @@ static __devinit bool viacam_serial_is_enabled(void)
         struct pci_bus *pbus = pci_find_bus(0, 0);
         u8 cbyte;
 
+        if (!pbus)
+                return false;
         pci_bus_read_config_byte(pbus, VIACAM_SERIAL_DEVFN,
                         VIACAM_SERIAL_CREG, &cbyte);
         if ((cbyte & VIACAM_SERIAL_BIT) == 0)