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authorLars-Peter Clausen <lars@metafoo.de>2014-05-20 16:23:10 +0400
committerMark Brown <broonie@linaro.org>2014-05-21 01:53:36 +0400
commitcf7b71f46b1c2f0376c373e10e5eee1b1fa3cd12 (patch)
tree9977d42924c430011cceae14fc4f2c5a522e8394 /sound/soc/codecs/ad1980.c
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
downloadlinux-cf7b71f46b1c2f0376c373e10e5eee1b1fa3cd12.tar.xz
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>
Diffstat (limited to 'sound/soc/codecs/ad1980.c')
-rw-r--r--sound/soc/codecs/ad1980.c39
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;