PCI ES1968 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/es1968.c | 75 +++++++++++++++++++++++++++------------------- 1 file changed, 45 insertions(+), 30 deletions(-)
diff --git a/sound/pci/es1968.c b/sound/pci/es1968.c index 5fa1861236f5..c038c1035c39 100644 --- a/sound/pci/es1968.c +++ b/sound/pci/es1968.c @@ -1600,7 +1600,8 @@ static int snd_es1968_capture_open(struct snd_pcm_substream *substream) es->mode = ESM_MODE_CAPTURE;
/* get mixbuffer */ - if ((es->mixbuf = snd_es1968_new_memory(chip, ESM_MIXBUF_SIZE)) == NULL) { + es->mixbuf = snd_es1968_new_memory(chip, ESM_MIXBUF_SIZE); + if (!es->mixbuf) { snd_es1968_free_apu_pair(chip, apu1); snd_es1968_free_apu_pair(chip, apu2); kfree(es); @@ -1695,11 +1696,13 @@ static void es1968_measure_clock(struct es1968 *chip) chip->clock = 48000; /* default clock value */
/* search 2 APUs (although one apu is enough) */ - if ((apu = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY)) < 0) { + apu = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY); + if (apu < 0) { dev_err(chip->card->dev, "Hmm, cannot find empty APU pair!?\n"); return; } - if ((memory = snd_es1968_new_memory(chip, CLOCK_MEASURE_BUFSIZE)) == NULL) { + memory = snd_es1968_new_memory(chip, CLOCK_MEASURE_BUFSIZE); + if (!memory) { dev_warn(chip->card->dev, "cannot allocate dma buffer - using default clock %d\n", chip->clock); @@ -1791,7 +1794,8 @@ snd_es1968_pcm(struct es1968 *chip, int device) int err;
/* get DMA buffer */ - if ((err = snd_es1968_init_dmabuf(chip)) < 0) + err = snd_es1968_init_dmabuf(chip); + if (err < 0) return err;
/* set PCMBAR */ @@ -1800,9 +1804,10 @@ snd_es1968_pcm(struct es1968 *chip, int device) wave_set_register(chip, 0x01FE, chip->dma.addr >> 12); wave_set_register(chip, 0x01FF, chip->dma.addr >> 12);
- if ((err = snd_pcm_new(chip->card, "ESS Maestro", device, - chip->playback_streams, - chip->capture_streams, &pcm)) < 0) + err = snd_pcm_new(chip->card, "ESS Maestro", device, + chip->playback_streams, + chip->capture_streams, &pcm); + if (err < 0) return err;
pcm->private_data = chip; @@ -1953,7 +1958,8 @@ static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id) struct es1968 *chip = dev_id; u32 event;
- if (!(event = inb(chip->io_port + 0x1A))) + event = inb(chip->io_port + 0x1A); + if (!event) return IRQ_NONE;
outw(inw(chip->io_port + 4) & 1, chip->io_port + 4); @@ -2008,13 +2014,15 @@ snd_es1968_mixer(struct es1968 *chip) .read = snd_es1968_ac97_read, };
- if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0) + err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus); + if (err < 0) return err; pbus->no_vra = 1; /* ES1968 doesn't need VRA */
memset(&ac97, 0, sizeof(ac97)); ac97.private_data = chip; - if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97)) < 0) + err = snd_ac97_mixer(pbus, &ac97, &chip->ac97); + if (err < 0) return err;
#ifndef CONFIG_SND_ES1968_INPUT @@ -2661,7 +2669,8 @@ static int snd_es1968_create(struct snd_card *card, *chip_ret = NULL;
/* enable PCI device */ - if ((err = pci_enable_device(pci)) < 0) + err = pci_enable_device(pci); + if (err < 0) return err; /* check, if we can restrict PCI DMA transfers to 28 bits */ if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) { @@ -2692,7 +2701,8 @@ static int snd_es1968_create(struct snd_card *card, chip->playback_streams = play_streams; chip->capture_streams = capt_streams;
- if ((err = pci_request_regions(pci, "ESS Maestro")) < 0) { + err = pci_request_regions(pci, "ESS Maestro"); + if (err < 0) { kfree(chip); pci_disable_device(pci); return err; @@ -2739,7 +2749,8 @@ static int snd_es1968_create(struct snd_card *card,
snd_es1968_chip_init(chip);
- 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_es1968_free(chip); return err; } @@ -2804,14 +2815,15 @@ static int snd_es1968_probe(struct pci_dev *pci, total_bufsize[dev] = 128; if (total_bufsize[dev] > 4096) total_bufsize[dev] = 4096; - if ((err = snd_es1968_create(card, pci, - total_bufsize[dev] * 1024, /* in bytes */ - pcm_substreams_p[dev], - pcm_substreams_c[dev], - pci_id->driver_data, - use_pm[dev], - radio_nr[dev], - &chip)) < 0) { + err = snd_es1968_create(card, pci, + total_bufsize[dev] * 1024, /* in bytes */ + pcm_substreams_p[dev], + pcm_substreams_c[dev], + pci_id->driver_data, + use_pm[dev], + radio_nr[dev], + &chip); + if (err < 0) { snd_card_free(card); return err; } @@ -2832,12 +2844,14 @@ static int snd_es1968_probe(struct pci_dev *pci, break; }
- if ((err = snd_es1968_pcm(chip, 0)) < 0) { + err = snd_es1968_pcm(chip, 0); + if (err < 0) { snd_card_free(card); return err; }
- if ((err = snd_es1968_mixer(chip)) < 0) { + err = snd_es1968_mixer(chip); + if (err < 0) { snd_card_free(card); return err; } @@ -2855,13 +2869,13 @@ static int snd_es1968_probe(struct pci_dev *pci, } } if (enable_mpu[dev]) { - if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, - chip->io_port + ESM_MPU401_PORT, - MPU401_INFO_INTEGRATED | - MPU401_INFO_IRQ_HOOK, - -1, &chip->rmidi)) < 0) { + err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, + chip->io_port + ESM_MPU401_PORT, + MPU401_INFO_INTEGRATED | + MPU401_INFO_IRQ_HOOK, + -1, &chip->rmidi); + if (err < 0) dev_warn(card->dev, "skipping MPU-401 MIDI support..\n"); - } }
snd_es1968_create_gameport(chip, dev); @@ -2882,7 +2896,8 @@ static int snd_es1968_probe(struct pci_dev *pci, sprintf(card->longname, "%s at 0x%lx, irq %i", card->shortname, chip->io_port, chip->irq);
- if ((err = snd_card_register(card)) < 0) { + err = snd_card_register(card); + if (err < 0) { snd_card_free(card); return err; }