From: Jesper Juhl <jesper.juhl@gmail.com>

There's no need to check pointers passed to vfree() for NULL.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 sound/usb/usbaudio.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff -puN sound/usb/usbaudio.c~dont-check-vfree-arg-for-null-in-usbaudio sound/usb/usbaudio.c
--- 25/sound/usb/usbaudio.c~dont-check-vfree-arg-for-null-in-usbaudio	Fri Feb 24 15:10:16 2006
+++ 25-akpm/sound/usb/usbaudio.c	Fri Feb 24 15:10:16 2006
@@ -720,10 +720,9 @@ static int snd_pcm_alloc_vmalloc_buffer(
 static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
 {
 	struct snd_pcm_runtime *runtime = subs->runtime;
-	if (runtime->dma_area) {
-		vfree(runtime->dma_area);
-		runtime->dma_area = NULL;
-	}
+
+	vfree(runtime->dma_area);
+	runtime->dma_area = NULL;
 	return 0;
 }
 
_