[ALSA] no need to check pointers passed to vfree() for NULL

Modules: Digigram VX core,USB generic driver

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

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 4 deletions

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 7b1b9f29f377..039f27dc1f08 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -720,10 +720,9 @@ static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t s
 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;
 }