[media] gspca: Use the global error status for get/set streamparm

Also, in ov534, don't check the parm type.

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h
index d4d210b..3c8a63b 100644
--- a/drivers/media/video/gspca/gspca.h
+++ b/drivers/media/video/gspca/gspca.h
@@ -93,7 +93,7 @@
 				struct v4l2_dbg_register *);
 typedef int (*cam_ident_op) (struct gspca_dev *,
 				struct v4l2_dbg_chip_ident *);
-typedef int (*cam_streamparm_op) (struct gspca_dev *,
+typedef void (*cam_streamparm_op) (struct gspca_dev *,
 				  struct v4l2_streamparm *);
 typedef int (*cam_qmnu_op) (struct gspca_dev *,
 			struct v4l2_querymenu *);