diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-core.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 2ff708a41119..6cc68140fa67 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2137,19 +2137,27 @@ EXPORT_SYMBOL_GPL(snd_soc_write); * * Writes new register value. * - * Returns 1 for change else 0. + * Returns 1 for change, 0 for no change, or negative error code. */ int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, unsigned int mask, unsigned int value) { int change; unsigned int old, new; + int ret; - old = snd_soc_read(codec, reg); + ret = snd_soc_read(codec, reg); + if (ret < 0) + return ret; + + old = ret; new = (old & ~mask) | value; change = old != new; - if (change) - snd_soc_write(codec, reg, new); + if (change) { + ret = snd_soc_write(codec, reg, new); + if (ret < 0) + return ret; + } return change; } |