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ALSA: via82xx: Fix assignment in if condition 

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.

Link: https://lore.kernel.org/r/20210608140540.17885-34-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-06-08 16:05:07 +02:00
Родитель 055e20c3be
Коммит afb342f022
2 изменённых файлов: 85 добавлений и 45 удалений
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78
sound/pci/via82xx.c
Просмотреть файл

@ -515,7 +515,8 @@ static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
while (timeout-- > 0) { while (timeout-- > 0) {
udelay(1); 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; return val & 0xffff;
} }
dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", 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; int rate_changed;
u32 rbits; 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; return rate_changed;
if (rate_changed) if (rate_changed)
snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, 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 /* we may remove following constaint when we modify table entries
in interrupt */ 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; return err;
if (use_src) { 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]; struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
int err; 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 err;
return 0; return 0;
} }
@ -1238,7 +1242,8 @@ static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
int err; int err;
viadev = &chip->devs[chip->playback_devno + substream->number]; 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; return err;
stream = viadev->reg_offset / 0x10; stream = viadev->reg_offset / 0x10;
if (chip->dxs_controls[stream]) { if (chip->dxs_controls[stream]) {
@ -1275,7 +1280,8 @@ static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
.mask = 0, .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; return err;
substream->runtime->hw.channels_max = 6; substream->runtime->hw.channels_max = 6;
if (chip->revision == VIA_REV_8233A) 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, .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; return err;
chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
chip->ac97_bus->clock = chip->ac97_clock; 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.private_free = snd_via82xx_mixer_free_ac97;
ac97.pci = chip->pci; ac97.pci = chip->pci;
ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE; 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; return err;
snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override); snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
@ -2054,9 +2062,9 @@ static int snd_via686_init_misc(struct via82xx *chip)
break; break;
} }
} }
if (mpu_port >= 0x200 && if (mpu_port >= 0x200)
(chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401")) chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401");
!= NULL) { if (chip->mpu_res) {
if (rev_h) if (rev_h)
legacy |= VIA_FUNC_MIDI_PNP; /* enable PCI I/O 2 */ legacy |= VIA_FUNC_MIDI_PNP; /* enable PCI I/O 2 */
legacy |= VIA_FUNC_ENABLE_MIDI; legacy |= VIA_FUNC_ENABLE_MIDI;
@ -2173,7 +2181,8 @@ static int snd_via82xx_chip_init(struct via82xx *chip)
schedule_timeout_uninterruptible(1); schedule_timeout_uninterruptible(1);
} while (time_before(jiffies, end_time)); } 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, dev_err(chip->card->dev,
"AC'97 codec is not ready [0x%x]\n", val); "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_SECONDARY_VALID |
(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
do { 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; chip->ac97_secondary = 1;
goto __ac97_ok2; goto __ac97_ok2;
} }
@ -2337,10 +2347,12 @@ static int snd_via82xx_create(struct snd_card *card,
.dev_free = snd_via82xx_dev_free, .dev_free = snd_via82xx_dev_free,
}; };
if ((err = pci_enable_device(pci)) < 0) err = pci_enable_device(pci);
if (err < 0)
return err; return err;
if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (!chip) {
pci_disable_device(pci); pci_disable_device(pci);
return -ENOMEM; return -ENOMEM;
} }
@ -2360,7 +2372,8 @@ static int snd_via82xx_create(struct snd_card *card,
pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM)); 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); kfree(chip);
pci_disable_device(pci); pci_disable_device(pci);
return err; return err;
@ -2380,12 +2393,14 @@ static int snd_via82xx_create(struct snd_card *card,
if (ac97_clock >= 8000 && ac97_clock <= 48000) if (ac97_clock >= 8000 && ac97_clock <= 48000)
chip->ac97_clock = ac97_clock; 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); snd_via82xx_free(chip);
return err; 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); snd_via82xx_free(chip);
return err; return err;
} }
@ -2541,24 +2556,31 @@ static int snd_via82xx_probe(struct pci_dev *pci,
goto __error; goto __error;
} }
if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, err = snd_via82xx_create(card, pci, chip_type, pci->revision,
ac97_clock, &chip)) < 0) ac97_clock, &chip);
if (err < 0)
goto __error; goto __error;
card->private_data = chip; 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; goto __error;
if (chip_type == TYPE_VIA686) { if (chip_type == TYPE_VIA686) {
if ((err = snd_via686_pcm_new(chip)) < 0 || err = snd_via686_pcm_new(chip);
(err = snd_via686_init_misc(chip)) < 0) if (err < 0)
goto __error;
err = snd_via686_init_misc(chip);
if (err < 0)
goto __error; goto __error;
} else { } else {
if (chip_type == TYPE_VIA8233A) { if (chip_type == TYPE_VIA8233A) {
if ((err = snd_via8233a_pcm_new(chip)) < 0) err = snd_via8233a_pcm_new(chip);
if (err < 0)
goto __error; goto __error;
// chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */ // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
} else { } else {
if ((err = snd_via8233_pcm_new(chip)) < 0) err = snd_via8233_pcm_new(chip);
if (err < 0)
goto __error; goto __error;
if (dxs_support == VIA_DXS_48K) if (dxs_support == VIA_DXS_48K)
chip->dxs_fixed = 1; chip->dxs_fixed = 1;
@ -2569,7 +2591,8 @@ static int snd_via82xx_probe(struct pci_dev *pci,
chip->dxs_src = 1; chip->dxs_src = 1;
} }
} }
if ((err = snd_via8233_init_misc(chip)) < 0) err = snd_via8233_init_misc(chip);
if (err < 0)
goto __error; goto __error;
} }
@ -2583,7 +2606,8 @@ static int snd_via82xx_probe(struct pci_dev *pci,
snd_via82xx_proc_init(chip); snd_via82xx_proc_init(chip);
if ((err = snd_card_register(card)) < 0) { err = snd_card_register(card);
if (err < 0) {
snd_card_free(card); snd_card_free(card);
return err; return err;
} }

52
sound/pci/via82xx_modem.c
Просмотреть файл

@ -369,7 +369,8 @@ static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
while (timeout-- > 0) { while (timeout-- > 0) {
udelay(1); 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; return val & 0xffff;
} }
dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", 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; runtime->hw = snd_via82xx_hw;
if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_rates)) < 0) &hw_constraints_rates);
if (err < 0)
return err; return err;
/* we may remove following constaint when we modify table entries /* we may remove following constaint when we modify table entries
in interrupt */ 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; return err;
runtime->private_data = viadev; runtime->private_data = viadev;
@ -878,7 +881,8 @@ static int snd_via82xx_mixer_new(struct via82xx_modem *chip)
.wait = snd_via82xx_codec_wait, .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; return err;
chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
chip->ac97_bus->clock = chip->ac97_clock; 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.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
ac97.num = chip->ac97_secondary; 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 err;
return 0; return 0;
@ -971,7 +976,8 @@ static int snd_via82xx_chip_init(struct via82xx_modem *chip)
schedule_timeout_uninterruptible(1); schedule_timeout_uninterruptible(1);
} while (time_before(jiffies, end_time)); } 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, dev_err(chip->card->dev,
"AC'97 codec is not ready [0x%x]\n", val); "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_SECONDARY_VALID |
(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
do { 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; chip->ac97_secondary = 1;
goto __ac97_ok2; goto __ac97_ok2;
} }
@ -1079,10 +1086,12 @@ static int snd_via82xx_create(struct snd_card *card,
.dev_free = snd_via82xx_dev_free, .dev_free = snd_via82xx_dev_free,
}; };
if ((err = pci_enable_device(pci)) < 0) err = pci_enable_device(pci);
if (err < 0)
return err; return err;
if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (!chip) {
pci_disable_device(pci); pci_disable_device(pci);
return -ENOMEM; return -ENOMEM;
} }
@ -1092,7 +1101,8 @@ static int snd_via82xx_create(struct snd_card *card,
chip->pci = pci; chip->pci = pci;
chip->irq = -1; chip->irq = -1;
if ((err = pci_request_regions(pci, card->driver)) < 0) { err = pci_request_regions(pci, card->driver);
if (err < 0) {
kfree(chip); kfree(chip);
pci_disable_device(pci); pci_disable_device(pci);
return err; return err;
@ -1109,12 +1119,14 @@ static int snd_via82xx_create(struct snd_card *card,
if (ac97_clock >= 8000 && ac97_clock <= 48000) if (ac97_clock >= 8000 && ac97_clock <= 48000)
chip->ac97_clock = ac97_clock; 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); snd_via82xx_free(chip);
return err; 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); snd_via82xx_free(chip);
return err; return err;
} }
@ -1154,14 +1166,17 @@ static int snd_via82xx_probe(struct pci_dev *pci,
goto __error; goto __error;
} }
if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, err = snd_via82xx_create(card, pci, chip_type, pci->revision,
ac97_clock, &chip)) < 0) ac97_clock, &chip);
if (err < 0)
goto __error; goto __error;
card->private_data = chip; card->private_data = chip;
if ((err = snd_via82xx_mixer_new(chip)) < 0) err = snd_via82xx_mixer_new(chip);
if (err < 0)
goto __error; goto __error;
if ((err = snd_via686_pcm_new(chip)) < 0 ) err = snd_via686_pcm_new(chip);
if (err < 0)
goto __error; goto __error;
/* disable interrupts */ /* disable interrupts */
@ -1173,7 +1188,8 @@ static int snd_via82xx_probe(struct pci_dev *pci,
snd_via82xx_proc_init(chip); snd_via82xx_proc_init(chip);
if ((err = snd_card_register(card)) < 0) { err = snd_card_register(card);
if (err < 0) {
snd_card_free(card); snd_card_free(card);
return err; return err;
} }