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authorJesper Juhl <juhl-lkml@dif.dk>2005-05-30 17:30:32 +0200
committerJaroslav Kysela <perex@suse.cz>2005-06-22 12:27:43 +0200
commit4d572776d4dfa2d5385a2ec3acec3cc059149e13 (patch)
treeb25ff1baa8d106561d9f07045bbfea6ac330c714 /sound/core
parent6fd8b87f0e1e5de436ba020bd5806fe9ad738269 (diff)
[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>
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/seq/oss/seq_oss_synth.c24
-rw-r--r--sound/core/seq/seq_dummy.c5
-rw-r--r--sound/core/timer.c12
3 files changed, 13 insertions, 28 deletions
diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c
index 638cc148706..1a7736cbf3a 100644
--- a/sound/core/seq/oss/seq_oss_synth.c
+++ b/sound/core/seq/oss/seq_oss_synth.c
@@ -325,14 +325,10 @@ snd_seq_oss_synth_cleanup(seq_oss_devinfo_t *dp)
}
snd_use_lock_free(&rec->use_lock);
}
- if (info->sysex) {
- kfree(info->sysex);
- info->sysex = NULL;
- }
- if (info->ch) {
- kfree(info->ch);
- info->ch = NULL;
- }
+ kfree(info->sysex);
+ info->sysex = NULL;
+ kfree(info->ch);
+ info->ch = NULL;
}
dp->synth_opened = 0;
dp->max_synthdev = 0;
@@ -418,14 +414,10 @@ snd_seq_oss_synth_reset(seq_oss_devinfo_t *dp, int dev)
dp->file_mode) < 0) {
midi_synth_dev.opened--;
info->opened = 0;
- if (info->sysex) {
- kfree(info->sysex);
- info->sysex = NULL;
- }
- if (info->ch) {
- kfree(info->ch);
- info->ch = NULL;
- }
+ kfree(info->sysex);
+ info->sysex = NULL;
+ kfree(info->ch);
+ info->ch = NULL;
}
return;
}
diff --git a/sound/core/seq/seq_dummy.c b/sound/core/seq/seq_dummy.c
index e88967c5b93..ea945a5d2a0 100644
--- a/sound/core/seq/seq_dummy.c
+++ b/sound/core/seq/seq_dummy.c
@@ -140,10 +140,7 @@ dummy_input(snd_seq_event_t *ev, int direct, void *private_data, int atomic, int
static void
dummy_free(void *private_data)
{
- snd_seq_dummy_port_t *p;
-
- p = private_data;
- kfree(p);
+ kfree(private_data);
}
/*
diff --git a/sound/core/timer.c b/sound/core/timer.c
index d67a5e91a10..b498e5482d7 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)