From 4d572776d4dfa2d5385a2ec3acec3cc059149e13 Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Mon, 30 May 2005 17:30:32 +0200 Subject: [PATCH] [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 Signed-off-by: Takashi Iwai --- sound/core/seq/oss/seq_oss_synth.c | 24 ++++++++---------------- sound/core/seq/seq_dummy.c | 5 +---- sound/core/timer.c | 12 ++++-------- sound/drivers/vx/vx_pcm.c | 12 ++++-------- sound/i2c/tea6330t.c | 3 +-- sound/isa/gus/gus_pcm.c | 3 +-- sound/pci/ca0106/ca0106_main.c | 6 +----- sound/pci/cs46xx/cs46xx_lib.c | 3 +-- sound/pci/emu10k1/emu10k1x.c | 5 +---- sound/pci/emu10k1/emupcm.c | 4 +--- sound/pci/via82xx.c | 6 ++---- sound/pci/via82xx_modem.c | 6 ++---- sound/pci/ymfpci/ymfpci_main.c | 4 +--- sound/pcmcia/vx/vx_entry.c | 3 +-- sound/synth/emux/emux_effect.c | 6 ++---- sound/usb/usbaudio.c | 12 ++++-------- sound/usb/usbmixer.c | 6 ++---- sound/usb/usx2y/usbusx2yaudio.c | 6 ++---- 18 files changed, 39 insertions(+), 87 deletions(-) diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c index 638cc14870..1a7736cbf3 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 e88967c5b9..ea945a5d2a 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 d67a5e91a1..b498e5482d 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) diff --git a/sound/drivers/vx/vx_pcm.c b/sound/drivers/vx/vx_pcm.c index 98587176b3..af381b15fe 100644 --- a/sound/drivers/vx/vx_pcm.c +++ b/sound/drivers/vx/vx_pcm.c @@ -1264,14 +1264,10 @@ static void snd_vx_pcm_free(snd_pcm_t *pcm) { vx_core_t *chip = pcm->private_data; chip->pcm[pcm->device] = NULL; - if (chip->playback_pipes) { - kfree(chip->playback_pipes); - chip->playback_pipes = NULL; - } - if (chip->capture_pipes) { - kfree(chip->capture_pipes); - chip->capture_pipes = NULL; - } + kfree(chip->playback_pipes); + chip->playback_pipes = NULL; + kfree(chip->capture_pipes); + chip->capture_pipes = NULL; } /* diff --git a/sound/i2c/tea6330t.c b/sound/i2c/tea6330t.c index bb503e70b6..2da8d7f157 100644 --- a/sound/i2c/tea6330t.c +++ b/sound/i2c/tea6330t.c @@ -266,8 +266,7 @@ TEA6330T_TREBLE("Tone Control - Treble", 0) static void snd_tea6330_free(snd_i2c_device_t *device) { - tea6330t_t *tea = device->private_data; - kfree(tea); + kfree(device->private_data); } int snd_tea6330t_update_mixer(snd_card_t * card, diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c index 8995ad9c51..b75066ab46 100644 --- a/sound/isa/gus/gus_pcm.c +++ b/sound/isa/gus/gus_pcm.c @@ -656,8 +656,7 @@ static snd_pcm_hardware_t snd_gf1_pcm_capture = static void snd_gf1_pcm_playback_free(snd_pcm_runtime_t *runtime) { - gus_pcm_private_t * pcmp = runtime->private_data; - kfree(pcmp); + kfree(runtime->private_data); } static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream) diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c index 85caf1bbcc..0ec0c3ec22 100644 --- a/sound/pci/ca0106/ca0106_main.c +++ b/sound/pci/ca0106/ca0106_main.c @@ -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 */ diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c index 5f2ffb7efa..fd4c50c88b 100644 --- a/sound/pci/cs46xx/cs46xx_lib.c +++ b/sound/pci/cs46xx/cs46xx_lib.c @@ -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) diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c index f8d92335a3..e90c5ddd1d 100644 --- a/sound/pci/emu10k1/emu10k1x.c +++ b/sound/pci/emu10k1/emu10k1x.c @@ -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) diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c index fd7cc389f8..520b99af5f 100644 --- a/sound/pci/emu10k1/emupcm.c +++ b/sound/pci/emu10k1/emupcm.c @@ -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) diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c index 52d1074f86..e329e19b67 100644 --- a/sound/pci/via82xx.c +++ b/sound/pci/via82xx.c @@ -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; } diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c index e10fceb3ed..5896d289f9 100644 --- a/sound/pci/via82xx_modem.c +++ b/sound/pci/via82xx_modem.c @@ -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; } diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c index 997cf37cdd..2ae79610ec 100644 --- a/sound/pci/ymfpci/ymfpci_main.c +++ b/sound/pci/ymfpci/ymfpci_main.c @@ -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) diff --git a/sound/pcmcia/vx/vx_entry.c b/sound/pcmcia/vx/vx_entry.c index 53d8172c52..332bbca3df 100644 --- a/sound/pcmcia/vx/vx_entry.c +++ b/sound/pcmcia/vx/vx_entry.c @@ -68,8 +68,7 @@ static int snd_vxpocket_free(vx_core_t *chip) if (hw) hw->card_list[vxp->index] = NULL; chip->card = NULL; - if (chip->dev) - kfree(chip->dev); + kfree(chip->dev); snd_vx_free_firmware(chip); kfree(chip); diff --git a/sound/synth/emux/emux_effect.c b/sound/synth/emux/emux_effect.c index ec3fc1ba7f..4764940f11 100644 --- a/sound/synth/emux/emux_effect.c +++ b/sound/synth/emux/emux_effect.c @@ -291,10 +291,8 @@ snd_emux_create_effect(snd_emux_port_t *p) void snd_emux_delete_effect(snd_emux_port_t *p) { - if (p->effect) { - kfree(p->effect); - p->effect = NULL; - } + kfree(p->effect); + p->effect = NULL; } void diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index a82412b879..a75695045f 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -859,10 +859,8 @@ static void release_urb_ctx(snd_urb_ctx_t *u) usb_free_urb(u->urb); u->urb = NULL; } - if (u->buf) { - kfree(u->buf); - u->buf = NULL; - } + kfree(u->buf); + u->buf = NULL; } /* @@ -880,10 +878,8 @@ static void release_substream_urbs(snd_usb_substream_t *subs, int force) release_urb_ctx(&subs->dataurb[i]); for (i = 0; i < SYNC_URBS; i++) release_urb_ctx(&subs->syncurb[i]); - if (subs->tmpbuf) { - kfree(subs->tmpbuf); - subs->tmpbuf = NULL; - } + kfree(subs->tmpbuf); + subs->tmpbuf = NULL; subs->nurbs = 0; } diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c index 83ba665e5c..e73c1c9d3e 100644 --- a/sound/usb/usbmixer.c +++ b/sound/usb/usbmixer.c @@ -623,10 +623,8 @@ static struct usb_feature_control_info audio_feature_info[] = { /* private_free callback */ static void usb_mixer_elem_free(snd_kcontrol_t *kctl) { - if (kctl->private_data) { - kfree(kctl->private_data); - kctl->private_data = NULL; - } + kfree(kctl->private_data); + kctl->private_data = NULL; } diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c index 4c292e0900..62dfd28b3b 100644 --- a/sound/usb/usx2y/usbusx2yaudio.c +++ b/sound/usb/usx2y/usbusx2yaudio.c @@ -401,10 +401,8 @@ static void usX2Y_urbs_release(snd_usX2Y_substream_t *subs) for (i = 0; i < NRURBS; i++) usX2Y_urb_release(subs->urb + i, subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]); - if (subs->tmpbuf) { - kfree(subs->tmpbuf); - subs->tmpbuf = NULL; - } + kfree(subs->tmpbuf); + subs->tmpbuf = NULL; } /* * initialize a substream's urbs -- 2.39.5