[alsa-devel] [patch] remove unnecessary null check

[Dan Carpenter]

This function is only called from snd_ctl_ioctl() and the file parameter 
can never be null so there is no need to check it here.

We dereference file at the start of the function:
        struct snd_card *card = file->card;
and it confuses static checkers to dereference a pointer before 
checking it.

regards,
dan carpenter

Signed-off-by: Dan Carpenter <error27 at gmail.com>

--- orig/sound/core/control.c	2009-11-17 07:15:04.000000000 +0200
+++ devel/sound/core/control.c	2009-11-17 07:40:30.000000000 +0200
@@ -1120,7 +1120,7 @@
 	    	goto __kctl_end;
 	}
 	if (vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
-		if (file && vd->owner != NULL && vd->owner != file) {
+		if (vd->owner != NULL && vd->owner != file) {
 			err = -EPERM;
 			goto __kctl_end;
 		}