Using a proper do-while loop here instead of a open-coded goto loop is both cleaner and shorter.
Also fixes the following warnings from smatch: sound/soc/codecs/ad1980.c:213 ad1980_reset() info: loop could be replaced with if statement. sound/soc/codecs/ad1980.c:212 ad1980_reset() info: ignoring unreachable code. sound/soc/codecs/ad1980.c:215 ad1980_reset() info: ignoring unreachable code.
While we are at it also change retry_cnt to unsigned int, using u16 for a on-stack loop counter doesn't make that much sense.
Signed-off-by: Lars-Peter Clausen lars@metafoo.de --- sound/soc/codecs/ad1980.c | 39 +++++++++++++++++++-------------------- 1 file changed, 19 insertions(+), 20 deletions(-)
diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c index 34d965a..304d300 100644 --- a/sound/soc/codecs/ad1980.c +++ b/sound/soc/codecs/ad1980.c @@ -189,28 +189,27 @@ static struct snd_soc_dai_driver ad1980_dai = {
static int ad1980_reset(struct snd_soc_codec *codec, int try_warm) { - u16 retry_cnt = 0; + unsigned int retry_cnt = 0;
-retry: - if (try_warm && soc_ac97_ops->warm_reset) { - soc_ac97_ops->warm_reset(codec->ac97); - if (ac97_read(codec, AC97_RESET) == 0x0090) - return 1; - } - - soc_ac97_ops->reset(codec->ac97); - /* Set bit 16slot in register 74h, then every slot will has only 16 - * bits. This command is sent out in 20bit mode, in which case the - * first nibble of data is eaten by the addr. (Tag is always 16 bit)*/ - ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900); - - if (ac97_read(codec, AC97_RESET) != 0x0090) - goto err; - return 0; + do { + if (try_warm && soc_ac97_ops->warm_reset) { + soc_ac97_ops->warm_reset(codec->ac97); + if (ac97_read(codec, AC97_RESET) == 0x0090) + return 1; + }
-err: - while (retry_cnt++ < 10) - goto retry; + soc_ac97_ops->reset(codec->ac97); + /* + * Set bit 16slot in register 74h, then every slot will has only + * 16 bits. This command is sent out in 20bit mode, in which + * case the first nibble of data is eaten by the addr. (Tag is + * always 16 bit) + */ + ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900); + + if (ac97_read(codec, AC97_RESET) == 0x0090) + return 0; + } while (retry_cnt++ < 10);
printk(KERN_ERR "AD1980 AC97 reset failed\n"); return -EIO;