V4L/DVB (9079): gspca: Return error code from stream start functions.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c
index 4d9f4cc..a9d51ba 100644
--- a/drivers/media/video/gspca/conex.c
+++ b/drivers/media/video/gspca/conex.c
@@ -837,12 +837,13 @@
 	return 0;
 }
 
-static void sd_start(struct gspca_dev *gspca_dev)
+static int sd_start(struct gspca_dev *gspca_dev)
 {
 	cx11646_initsize(gspca_dev);
 	cx11646_fw(gspca_dev);
 	cx_sensor(gspca_dev);
 	cx11646_jpeg(gspca_dev);
+	return 0;
 }
 
 static void sd_stop0(struct gspca_dev *gspca_dev)