[PATCH] remove redundant NULL checks before kfree() in sound/ and avoid casting pointers about to be kfree()'ed

Checking a pointer for NULL before calling kfree() on it is redundant,
kfree() deals with NULL pointers just fine.
This patch removes such checks from sound/

This patch also makes another, but closely related, change.
It avoids casting pointers about to be kfree()'ed.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/sound/oss/ad1848.c b/sound/oss/ad1848.c
index 4384dac3f794..7c835abd99bc 100644
--- a/sound/oss/ad1848.c
+++ b/sound/oss/ad1848.c
@@ -2178,8 +2178,7 @@ void ad1848_unload(int io_base, int irq, int dma_playback, int dma_capture, int
                 
         if (devc != NULL)
         {
-                if(audio_devs[dev]->portc!=NULL)
-                        kfree(audio_devs[dev]->portc);
+                kfree(audio_devs[dev]->portc);
                 release_region(devc->base, 4);
 
                 if (!share_dma)