[ALSA] Remove redundant NULL checks before kfree

Timer Midlevel,ALSA sequencer,ALSA<-OSS sequencer,Digigram VX core
I2C tea6330t,GUS Library,VIA82xx driver,VIA82xx-modem driver
CA0106 driver,CS46xx driver,EMU10K1/EMU10K2 driver,YMFPCI driver
Digigram VX Pocket driver,Common EMU synth,USB generic driver,USB USX2Y
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: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 8 deletions

diff --git a/sound/core/timer.c b/sound/core/timer.c
index d67a5e91a108..b498e5482d77 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -1469,14 +1469,10 @@ static int snd_timer_user_tselect(struct file *file, snd_timer_select_t __user *
         if ((err = snd_timer_open(&tu->timeri, str, &tselect.id, current->pid)) < 0)
                 goto __err;
 
-        if (tu->queue) {
-                kfree(tu->queue);
-                tu->queue = NULL;
-        }
-        if (tu->tqueue) {
-                kfree(tu->tqueue);
-                tu->tqueue = NULL;
-        }
+        kfree(tu->queue);
+        tu->queue = NULL;
+        kfree(tu->tqueue);
+        tu->tqueue = NULL;
         if (tu->tread) {
                 tu->tqueue = (snd_timer_tread_t *)kmalloc(tu->queue_size * sizeof(snd_timer_tread_t), GFP_KERNEL);
                 if (tu->tqueue == NULL)