PCI VIA82xx driver code contains a few assignments in if condition, which is a bad coding style that may confuse readers and occasionally lead to bugs.
This patch is merely for coding-style fixes, no functional changes.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/via82xx.c | 78 +++++++++++++++++++++++++-------------- sound/pci/via82xx_modem.c | 52 +++++++++++++++++--------- 2 files changed, 85 insertions(+), 45 deletions(-)
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c index fd1f2f9cfbc3..943813a06abc 100644 --- a/sound/pci/via82xx.c +++ b/sound/pci/via82xx.c @@ -515,7 +515,8 @@ static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary) while (timeout-- > 0) { udelay(1); - if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) + val = snd_via82xx_codec_xread(chip); + if (!(val & VIA_REG_AC97_BUSY)) return val & 0xffff; } dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", @@ -1023,7 +1024,8 @@ static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream) int rate_changed; u32 rbits;
- if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0) + rate_changed = via_lock_rate(&chip->rates[0], ac97_rate); + if (rate_changed < 0) return rate_changed; if (rate_changed) snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, @@ -1197,7 +1199,8 @@ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
/* we may remove following constaint when we modify table entries in interrupt */ - if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) return err;
if (use_src) { @@ -1222,7 +1225,8 @@ static int snd_via686_playback_open(struct snd_pcm_substream *substream) struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; int err;
- if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0) + err = snd_via82xx_pcm_open(chip, viadev, substream); + if (err < 0) return err; return 0; } @@ -1238,7 +1242,8 @@ static int snd_via8233_playback_open(struct snd_pcm_substream *substream) int err;
viadev = &chip->devs[chip->playback_devno + substream->number]; - if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0) + err = snd_via82xx_pcm_open(chip, viadev, substream); + if (err < 0) return err; stream = viadev->reg_offset / 0x10; if (chip->dxs_controls[stream]) { @@ -1275,7 +1280,8 @@ static int snd_via8233_multi_open(struct snd_pcm_substream *substream) .mask = 0, };
- if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0) + err = snd_via82xx_pcm_open(chip, viadev, substream); + if (err < 0) return err; substream->runtime->hw.channels_max = 6; if (chip->revision == VIA_REV_8233A) @@ -1875,7 +1881,8 @@ static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_overrid .wait = snd_via82xx_codec_wait, };
- if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) + err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus); + if (err < 0) return err; chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; chip->ac97_bus->clock = chip->ac97_clock; @@ -1885,7 +1892,8 @@ static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_overrid ac97.private_free = snd_via82xx_mixer_free_ac97; ac97.pci = chip->pci; ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE; - if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) + err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97); + if (err < 0) return err;
snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override); @@ -2054,9 +2062,9 @@ static int snd_via686_init_misc(struct via82xx *chip) break; } } - if (mpu_port >= 0x200 && - (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401")) - != NULL) { + if (mpu_port >= 0x200) + chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"); + if (chip->mpu_res) { if (rev_h) legacy |= VIA_FUNC_MIDI_PNP; /* enable PCI I/O 2 */ legacy |= VIA_FUNC_ENABLE_MIDI; @@ -2173,7 +2181,8 @@ static int snd_via82xx_chip_init(struct via82xx *chip) schedule_timeout_uninterruptible(1); } while (time_before(jiffies, end_time));
- if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) + val = snd_via82xx_codec_xread(chip); + if (val & VIA_REG_AC97_BUSY) dev_err(chip->card->dev, "AC'97 codec is not ready [0x%x]\n", val);
@@ -2186,7 +2195,8 @@ static int snd_via82xx_chip_init(struct via82xx *chip) VIA_REG_AC97_SECONDARY_VALID | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); do { - if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { + val = snd_via82xx_codec_xread(chip); + if (val & VIA_REG_AC97_SECONDARY_VALID) { chip->ac97_secondary = 1; goto __ac97_ok2; } @@ -2337,10 +2347,12 @@ static int snd_via82xx_create(struct snd_card *card, .dev_free = snd_via82xx_dev_free, };
- if ((err = pci_enable_device(pci)) < 0) + err = pci_enable_device(pci); + if (err < 0) return err;
- if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { + chip = kzalloc(sizeof(*chip), GFP_KERNEL); + if (!chip) { pci_disable_device(pci); return -ENOMEM; } @@ -2360,7 +2372,8 @@ static int snd_via82xx_create(struct snd_card *card, pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
- if ((err = pci_request_regions(pci, card->driver)) < 0) { + err = pci_request_regions(pci, card->driver); + if (err < 0) { kfree(chip); pci_disable_device(pci); return err; @@ -2380,12 +2393,14 @@ static int snd_via82xx_create(struct snd_card *card, if (ac97_clock >= 8000 && ac97_clock <= 48000) chip->ac97_clock = ac97_clock;
- if ((err = snd_via82xx_chip_init(chip)) < 0) { + err = snd_via82xx_chip_init(chip); + if (err < 0) { snd_via82xx_free(chip); return err; }
- if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { + err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); + if (err < 0) { snd_via82xx_free(chip); return err; } @@ -2541,24 +2556,31 @@ static int snd_via82xx_probe(struct pci_dev *pci, goto __error; } - if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, - ac97_clock, &chip)) < 0) + err = snd_via82xx_create(card, pci, chip_type, pci->revision, + ac97_clock, &chip); + if (err < 0) goto __error; card->private_data = chip; - if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0) + err = snd_via82xx_mixer_new(chip, ac97_quirk); + if (err < 0) goto __error;
if (chip_type == TYPE_VIA686) { - if ((err = snd_via686_pcm_new(chip)) < 0 || - (err = snd_via686_init_misc(chip)) < 0) + err = snd_via686_pcm_new(chip); + if (err < 0) + goto __error; + err = snd_via686_init_misc(chip); + if (err < 0) goto __error; } else { if (chip_type == TYPE_VIA8233A) { - if ((err = snd_via8233a_pcm_new(chip)) < 0) + err = snd_via8233a_pcm_new(chip); + if (err < 0) goto __error; // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */ } else { - if ((err = snd_via8233_pcm_new(chip)) < 0) + err = snd_via8233_pcm_new(chip); + if (err < 0) goto __error; if (dxs_support == VIA_DXS_48K) chip->dxs_fixed = 1; @@ -2569,7 +2591,8 @@ static int snd_via82xx_probe(struct pci_dev *pci, chip->dxs_src = 1; } } - if ((err = snd_via8233_init_misc(chip)) < 0) + err = snd_via8233_init_misc(chip); + if (err < 0) goto __error; }
@@ -2583,7 +2606,8 @@ static int snd_via82xx_probe(struct pci_dev *pci,
snd_via82xx_proc_init(chip);
- if ((err = snd_card_register(card)) < 0) { + err = snd_card_register(card); + if (err < 0) { snd_card_free(card); return err; } diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c index 30253306f67c..07278a3dc8c1 100644 --- a/sound/pci/via82xx_modem.c +++ b/sound/pci/via82xx_modem.c @@ -369,7 +369,8 @@ static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) while (timeout-- > 0) { udelay(1); - if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) + val = snd_via82xx_codec_xread(chip); + if (!(val & VIA_REG_AC97_BUSY)) return val & 0xffff; } dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", @@ -738,13 +739,15 @@ static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev
runtime->hw = snd_via82xx_hw; - if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, - &hw_constraints_rates)) < 0) + err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + &hw_constraints_rates); + if (err < 0) return err;
/* we may remove following constaint when we modify table entries in interrupt */ - if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) return err;
runtime->private_data = viadev; @@ -878,7 +881,8 @@ static int snd_via82xx_mixer_new(struct via82xx_modem *chip) .wait = snd_via82xx_codec_wait, };
- if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) + err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus); + if (err < 0) return err; chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; chip->ac97_bus->clock = chip->ac97_clock; @@ -890,7 +894,8 @@ static int snd_via82xx_mixer_new(struct via82xx_modem *chip) ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; ac97.num = chip->ac97_secondary;
- if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) + err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97); + if (err < 0) return err;
return 0; @@ -971,7 +976,8 @@ static int snd_via82xx_chip_init(struct via82xx_modem *chip) schedule_timeout_uninterruptible(1); } while (time_before(jiffies, end_time));
- if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) + val = snd_via82xx_codec_xread(chip); + if (val & VIA_REG_AC97_BUSY) dev_err(chip->card->dev, "AC'97 codec is not ready [0x%x]\n", val);
@@ -983,7 +989,8 @@ static int snd_via82xx_chip_init(struct via82xx_modem *chip) VIA_REG_AC97_SECONDARY_VALID | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); do { - if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { + val = snd_via82xx_codec_xread(chip); + if (val & VIA_REG_AC97_SECONDARY_VALID) { chip->ac97_secondary = 1; goto __ac97_ok2; } @@ -1079,10 +1086,12 @@ static int snd_via82xx_create(struct snd_card *card, .dev_free = snd_via82xx_dev_free, };
- if ((err = pci_enable_device(pci)) < 0) + err = pci_enable_device(pci); + if (err < 0) return err;
- if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { + chip = kzalloc(sizeof(*chip), GFP_KERNEL); + if (!chip) { pci_disable_device(pci); return -ENOMEM; } @@ -1092,7 +1101,8 @@ static int snd_via82xx_create(struct snd_card *card, chip->pci = pci; chip->irq = -1;
- if ((err = pci_request_regions(pci, card->driver)) < 0) { + err = pci_request_regions(pci, card->driver); + if (err < 0) { kfree(chip); pci_disable_device(pci); return err; @@ -1109,12 +1119,14 @@ static int snd_via82xx_create(struct snd_card *card, if (ac97_clock >= 8000 && ac97_clock <= 48000) chip->ac97_clock = ac97_clock;
- if ((err = snd_via82xx_chip_init(chip)) < 0) { + err = snd_via82xx_chip_init(chip); + if (err < 0) { snd_via82xx_free(chip); return err; }
- if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { + err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); + if (err < 0) { snd_via82xx_free(chip); return err; } @@ -1154,14 +1166,17 @@ static int snd_via82xx_probe(struct pci_dev *pci, goto __error; } - if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, - ac97_clock, &chip)) < 0) + err = snd_via82xx_create(card, pci, chip_type, pci->revision, + ac97_clock, &chip); + if (err < 0) goto __error; card->private_data = chip; - if ((err = snd_via82xx_mixer_new(chip)) < 0) + err = snd_via82xx_mixer_new(chip); + if (err < 0) goto __error;
- if ((err = snd_via686_pcm_new(chip)) < 0 ) + err = snd_via686_pcm_new(chip); + if (err < 0) goto __error;
/* disable interrupts */ @@ -1173,7 +1188,8 @@ static int snd_via82xx_probe(struct pci_dev *pci,
snd_via82xx_proc_init(chip);
- if ((err = snd_card_register(card)) < 0) { + err = snd_card_register(card); + if (err < 0) { snd_card_free(card); return err; }