[PATCH] sound: Remove unneeded kmalloc() return value casts

Get rid of unnessesary casts of kmalloc() return value in sound/

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index 6b7a367..87b47c9 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -631,7 +631,8 @@
 		return -EINVAL;
 	}
 	if (params->buffer_size != runtime->buffer_size) {
-		if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+		newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+		if (!newbuf)
 			return -ENOMEM;
 		kfree(runtime->buffer);
 		runtime->buffer = newbuf;
@@ -657,7 +658,8 @@
 		return -EINVAL;
 	}
 	if (params->buffer_size != runtime->buffer_size) {
-		if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+		newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+		if (!newbuf)
 			return -ENOMEM;
 		kfree(runtime->buffer);
 		runtime->buffer = newbuf;