powerpc/ps3: Make ps3av_set_video_mode mode ID signed

Change the ps3av_auto_videomode() mode id argument type from unsigned to
signed so a negative id can be detected and reported as an -EINVAL failure.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/ps3av.h

@@ -730,7 +730,7 @@ extern int ps3av_cmd_av_get_hw_conf(struct ps3av_pkt_av_get_hw_conf *);
 extern int ps3av_cmd_video_get_monitor_info(struct ps3av_pkt_av_get_monitor_info *,
 					    u32);
 
-extern int ps3av_set_video_mode(u32);
+extern int ps3av_set_video_mode(int);
 extern int ps3av_set_audio_mode(u32, u32, u32, u32, u32);
 extern int ps3av_get_auto_mode(void);
 extern int ps3av_get_mode(void);

drivers/ps3/ps3av.c

@@ -838,7 +838,7 @@ static int ps3av_get_hw_conf(struct ps3av *ps3av)
 }
 
 /* set mode using id */
-int ps3av_set_video_mode(u32 id)
+int ps3av_set_video_mode(int id)
 {
 	int size;
 	u32 option;
@@ -940,7 +940,7 @@ EXPORT_SYMBOL_GPL(ps3av_audio_mute);
 static int ps3av_probe(struct ps3_system_bus_device *dev)
 {
 	int res;
-	u32 id;
+	int id;
 
 	dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
 	dev_dbg(&dev->core, "  timeout=%d\n", timeout);
@@ -962,8 +962,10 @@ static int ps3av_probe(struct ps3_system_bus_device *dev)
 	init_completion(&ps3av->done);
 	complete(&ps3av->done);
 	ps3av->wq = create_singlethread_workqueue("ps3avd");
-	if (!ps3av->wq)
+	if (!ps3av->wq) {
+		res = -ENOMEM;
 		goto fail;
+	}
 
 	switch (ps3_os_area_get_av_multi_out()) {
 	case PS3_PARAM_AV_MULTI_OUT_NTSC:
@@ -994,6 +996,12 @@ static int ps3av_probe(struct ps3_system_bus_device *dev)
 		safe_mode = 1;
 #endif /* CONFIG_FB */
 	id = ps3av_auto_videomode(&ps3av->av_hw_conf);
+	if (id < 0) {
+		printk(KERN_ERR "%s: invalid id :%d\n", __func__, id);
+		res = -EINVAL;
+		goto fail;
+	}
+
 	safe_mode = 0;
 
 	mutex_lock(&ps3av->mutex);
@@ -1007,7 +1015,7 @@ static int ps3av_probe(struct ps3_system_bus_device *dev)
 fail:
 	kfree(ps3av);
 	ps3av = NULL;
-	return -ENOMEM;
+	return res;
 }
 
 static int ps3av_remove(struct ps3_system_bus_device *dev)