V4L/DVB (12122): pvrusb2: De-obfuscate code which handles routing sch…

…emes This change does not change any outward behavior; it merely chops down some large if-conditions with embedded assignments into something a little more maintainable for others (I of course never had a problem with this...). Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
git-mirror · Jun 23, 2009 · 90135c9 · 90135c9
1 parent 81e804c
commit 90135c9
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Showing 3 changed files with 20 additions and 20 deletions.
diff --git a/drivers/media/video/pvrusb2/pvrusb2-cs53l32a.c b/drivers/media/video/pvrusb2/pvrusb2-cs53l32a.c
@@ -67,19 +67,19 @@ void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 		u32 input;
 		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
 			   hdw->input_val);
-		if ((sid < ARRAY_SIZE(routing_schemes)) &&
-		    ((sp = routing_schemes[sid]) != NULL) &&
-		    (hdw->input_val >= 0) &&
-		    (hdw->input_val < sp->cnt)) {
-			input = sp->def[hdw->input_val];
-		} else {
+		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
+			routing_schemes[sid] : NULL;
+		if ((sp == NULL) ||
+		    (hdw->input_val < 0) ||
+		    (hdw->input_val >= sp->cnt)) {
 			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 				   "*** WARNING *** subdev v4l2 set_input:"
 				   " Invalid routing scheme (%u)"
 				   " and/or input (%d)",
 				   sid, hdw->input_val);
 			return;
 		}
+		input = sp->def[hdw->input_val];
 		sd->ops->audio->s_routing(sd, input, 0, 0);
 	}
 }

diff --git a/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c b/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
@@ -114,21 +114,20 @@ void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 		const struct routing_scheme *sp;
 		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 
-		if ((sid < ARRAY_SIZE(routing_schemes)) &&
-		    ((sp = routing_schemes[sid]) != NULL) &&
-		    (hdw->input_val >= 0) &&
-		    (hdw->input_val < sp->cnt)) {
-			vid_input = sp->def[hdw->input_val].vid;
-			aud_input = sp->def[hdw->input_val].aud;
-		} else {
+		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
+			routing_schemes[sid] : NULL;
+		if ((sp == NULL) ||
+		    (hdw->input_val < 0) ||
+		    (hdw->input_val >= sp->cnt)) {
 			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 				   "*** WARNING *** subdev cx2584x set_input:"
 				   " Invalid routing scheme (%u)"
 				   " and/or input (%d)",
 				   sid, hdw->input_val);
 			return;
 		}
-
+		vid_input = sp->def[hdw->input_val].vid;
+		aud_input = sp->def[hdw->input_val].aud;
 		pvr2_trace(PVR2_TRACE_CHIPS,
 			   "subdev cx2584x set_input vid=0x%x aud=0x%x",
 			   vid_input, aud_input);

diff --git a/drivers/media/video/pvrusb2/pvrusb2-video-v4l.c b/drivers/media/video/pvrusb2/pvrusb2-video-v4l.c
@@ -85,19 +85,20 @@ void pvr2_saa7115_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 
 		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
 			   hdw->input_val);
-		if ((sid < ARRAY_SIZE(routing_schemes)) &&
-		    ((sp = routing_schemes[sid]) != NULL) &&
-		    (hdw->input_val >= 0) &&
-		    (hdw->input_val < sp->cnt)) {
-			input = sp->def[hdw->input_val];
-		} else {
+
+		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
+			routing_schemes[sid] : NULL;
+		if ((sp == NULL) ||
+		    (hdw->input_val < 0) ||
+		    (hdw->input_val >= sp->cnt)) {
 			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 				   "*** WARNING *** subdev v4l2 set_input:"
 				   " Invalid routing scheme (%u)"
 				   " and/or input (%d)",
 				   sid, hdw->input_val);
 			return;
 		}
+		input = sp->def[hdw->input_val];
 		sd->ops->video->s_routing(sd, input, 0, 0);
 	}
 }