1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c b/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c
index ac47b4c94388..75a5b9c2f15f 100644
--- a/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c
+++ b/drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c
@@ -217,6 +217,8 @@ static int pb0100_start(struct sd *sd)
 
         intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
         alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
+        if (!alt)
+                return -ENODEV;
         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 
         /* If we don't have enough bandwidth use a lower framerate */