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>

1 files changed, 12 insertions, 4 deletions

diff --git a/drivers/ps3/ps3av.c b/drivers/ps3/ps3av.c
index 5324978b73fb..235e87fcb49f 100644
--- a/drivers/ps3/ps3av.c
+++ b/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)