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[ALSA] Remove redundant NULL checks before kfree

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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>
This commit is contained in:
Jesper Juhl
2005-05-30 17:30:32 +02:00
committed by Jaroslav Kysela
parent 6fd8b87f0e
commit 4d572776d4
18 changed files with 39 additions and 87 deletions
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6
sound/pci/ca0106/ca0106_main.c
View File

@@ -332,11 +332,7 @@ static void snd_ca0106_intr_enable(ca0106_t *emu, unsigned int intrenb)
static void snd_ca0106_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
ca0106_pcm_t *epcm = runtime->private_data;
if (epcm) {
kfree(epcm);
}
kfree(runtime->private_data);
}
/* open_playback callback */

3
sound/pci/cs46xx/cs46xx_lib.c
View File

@@ -1295,8 +1295,7 @@ static snd_pcm_hw_constraint_list_t hw_constraints_period_sizes = {
static void snd_cs46xx_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
cs46xx_pcm_t * cpcm = runtime->private_data;
kfree(cpcm);
kfree(runtime->private_data);
}
static int _cs46xx_playback_open_channel (snd_pcm_substream_t * substream,int pcm_channel_id)

5
sound/pci/emu10k1/emu10k1x.c
View File

@@ -361,10 +361,7 @@ static void snd_emu10k1x_gpio_write(emu10k1x_t *emu, unsigned int value)
static void snd_emu10k1x_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
emu10k1x_pcm_t *epcm = runtime->private_data;
if (epcm)
kfree(epcm);
kfree(runtime->private_data);
}
static void snd_emu10k1x_pcm_interrupt(emu10k1x_t *emu, emu10k1x_voice_t *voice)

4
sound/pci/emu10k1/emupcm.c
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@@ -991,9 +991,7 @@ static void snd_emu10k1_pcm_efx_mixer_notify(emu10k1_t *emu, int idx, int activa
static void snd_emu10k1_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
emu10k1_pcm_t *epcm = runtime->private_data;
kfree(epcm);
kfree(runtime->private_data);
}
static int snd_emu10k1_efx_playback_close(snd_pcm_substream_t * substream)

6
sound/pci/via82xx.c
View File

@@ -491,10 +491,8 @@ static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
snd_dma_free_pages(&dev->table);
dev->table.area = NULL;
}
if (dev->idx_table) {
kfree(dev->idx_table);
dev->idx_table = NULL;
}
kfree(dev->idx_table);
dev->idx_table = NULL;
return 0;
}

6
sound/pci/via82xx_modem.c
View File

@@ -352,10 +352,8 @@ static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
snd_dma_free_pages(&dev->table);
dev->table.area = NULL;
}
if (dev->idx_table) {
kfree(dev->idx_table);
dev->idx_table = NULL;
}
kfree(dev->idx_table);
dev->idx_table = NULL;
return 0;
}

4
sound/pci/ymfpci/ymfpci_main.c
View File

@@ -829,9 +829,7 @@ static snd_pcm_hardware_t snd_ymfpci_capture =
static void snd_ymfpci_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
ymfpci_pcm_t *ypcm = runtime->private_data;
kfree(ypcm);
kfree(runtime->private_data);
}
static int snd_ymfpci_playback_open_1(snd_pcm_substream_t * substream)