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| author | Lars-Peter Clausen <lars@metafoo.de> | 2014-05-20 14:23:10 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-05-20 23:53:36 +0200 |
| commit | cf7b71f46b1c2f0376c373e10e5eee1b1fa3cd12 (patch) | |
| tree | 9977d42924c430011cceae14fc4f2c5a522e8394 | |
| parent | Linux 3.15-rc1 (diff) | |
| download | linux-cf7b71f46b1c2f0376c373e10e5eee1b1fa3cd12.tar.xz linux-cf7b71f46b1c2f0376c373e10e5eee1b1fa3cd12.zip | |
ASoC: ad1980: Replace goto loop with do-while loop
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>
Signed-off-by: Mark Brown <broonie@linaro.org>
| -rw-r--r-- | sound/soc/codecs/ad1980.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c index 34d965a4a040..304d3003339a 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; |