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/spca561.c b/drivers/media/video/gspca/spca561.c
index 4d8e2c0..29089d9 100644
--- a/drivers/media/video/gspca/spca561.c
+++ b/drivers/media/video/gspca/spca561.c
@@ -699,7 +699,7 @@
 		sd->ag_cnt = -1;
 }
 
-static void sd_start_12a(struct gspca_dev *gspca_dev)
+static int sd_start_12a(struct gspca_dev *gspca_dev)
 {
 	struct usb_device *dev = gspca_dev->dev;
 	int Clck = 0x8a; /* lower 0x8X values lead to fps > 30 */
@@ -725,8 +725,9 @@
 	setwhite(gspca_dev);
 	setautogain(gspca_dev);
 	setexposure(gspca_dev);
+	return 0;
 }
-static void sd_start_72a(struct gspca_dev *gspca_dev)
+static int sd_start_72a(struct gspca_dev *gspca_dev)
 {
 	struct usb_device *dev = gspca_dev->dev;
 	int Clck;
@@ -750,6 +751,7 @@
 	reg_w_val(dev, 0x8700, Clck);	/* 0x27 clock */
 	reg_w_val(dev, 0x8112, 0x10 | 0x20);
 	setautogain(gspca_dev);
+	return 0;
 }
 
 static void sd_stopN(struct gspca_dev *gspca_dev)