V4L/DVB: v4l2-common: simplify prio utility functions

v4l2_prio_init/open/close returned an int when in fact they would
always return 0. Make these void functions.

v4l2_prio_close and v4l2_prio_check pass an enum v4l2_priority as a
pointer for no good reason. Replace with a normal enum v4l2_priority
argument.

These changes will simplify the work of moving priority handling into
the v4l core.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index fe4159d..5ffa0d2 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -183,7 +183,7 @@
 	case VIDIOC_S_INPUT:
 	case VIDIOC_S_TUNER:
 	case VIDIOC_S_FREQUENCY:
-		ret = v4l2_prio_check(&vp->prio, &fh->prio);
+		ret = v4l2_prio_check(&vp->prio, fh->prio);
 		if (ret)
 			return ret;
 	}
@@ -972,7 +972,7 @@
 		fhp->rhp = NULL;
 	}
 
-	v4l2_prio_close(&vp->prio, &fhp->prio);
+	v4l2_prio_close(&vp->prio, fhp->prio);
 	file->private_data = NULL;
 
 	if (fhp->vnext) {
@@ -1093,7 +1093,7 @@
 
 	fhp->file = file;
 	file->private_data = fhp;
-	v4l2_prio_open(&vp->prio,&fhp->prio);
+	v4l2_prio_open(&vp->prio, &fhp->prio);
 
 	fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);