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-rw-r--r--drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c2
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 */