MPU401 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/drivers/mpu401/mpu401.c | 9 ++++++--- sound/drivers/mpu401/mpu401_uart.c | 19 +++++++++++++------ 2 files changed, 19 insertions(+), 9 deletions(-)
diff --git a/sound/drivers/mpu401/mpu401.c b/sound/drivers/mpu401/mpu401.c index 8c552e25805a..d0b55dbb411a 100644 --- a/sound/drivers/mpu401/mpu401.c +++ b/sound/drivers/mpu401/mpu401.c @@ -104,7 +104,8 @@ static int snd_mpu401_probe(struct platform_device *devptr) err = snd_mpu401_create(&devptr->dev, dev, &card); if (err < 0) return err; - if ((err = snd_card_register(card)) < 0) { + err = snd_card_register(card); + if (err < 0) { snd_card_free(card); return err; } @@ -182,7 +183,8 @@ static int snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev, err = snd_mpu401_create(&pnp_dev->dev, dev, &card); if (err < 0) return err; - if ((err = snd_card_register(card)) < 0) { + err = snd_card_register(card); + if (err < 0) { snd_card_free(card); return err; } @@ -227,7 +229,8 @@ static int __init alsa_card_mpu401_init(void) { int i, err;
- if ((err = platform_driver_register(&snd_mpu401_driver)) < 0) + err = platform_driver_register(&snd_mpu401_driver); + if (err < 0) return err;
for (i = 0; i < SNDRV_CARDS; i++) { diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c index 65982d6babfc..f435b9b4ae24 100644 --- a/sound/drivers/mpu401/mpu401_uart.c +++ b/sound/drivers/mpu401/mpu401_uart.c @@ -271,8 +271,11 @@ static int snd_mpu401_uart_input_open(struct snd_rawmidi_substream *substream) int err;
mpu = substream->rmidi->private_data; - if (mpu->open_input && (err = mpu->open_input(mpu)) < 0) - return err; + if (mpu->open_input) { + err = mpu->open_input(mpu); + if (err < 0) + return err; + } if (! test_bit(MPU401_MODE_BIT_OUTPUT, &mpu->mode)) { if (snd_mpu401_do_reset(mpu) < 0) goto error_out; @@ -293,8 +296,11 @@ static int snd_mpu401_uart_output_open(struct snd_rawmidi_substream *substream) int err;
mpu = substream->rmidi->private_data; - if (mpu->open_output && (err = mpu->open_output(mpu)) < 0) - return err; + if (mpu->open_output) { + err = mpu->open_output(mpu); + if (err < 0) + return err; + } if (! test_bit(MPU401_MODE_BIT_INPUT, &mpu->mode)) { if (snd_mpu401_do_reset(mpu) < 0) goto error_out; @@ -524,8 +530,9 @@ int snd_mpu401_uart_new(struct snd_card *card, int device, info_flags |= MPU401_INFO_INPUT | MPU401_INFO_OUTPUT; in_enable = (info_flags & MPU401_INFO_INPUT) ? 1 : 0; out_enable = (info_flags & MPU401_INFO_OUTPUT) ? 1 : 0; - if ((err = snd_rawmidi_new(card, "MPU-401U", device, - out_enable, in_enable, &rmidi)) < 0) + err = snd_rawmidi_new(card, "MPU-401U", device, + out_enable, in_enable, &rmidi); + if (err < 0) return err; mpu = kzalloc(sizeof(*mpu), GFP_KERNEL); if (!mpu) {