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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2020-09-04 21:28:52 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-09-07 15:15:49 +0300 |
| commit | d20e834e13ce349c9b901b9dd8b7013e255083e8 (patch) | |
| tree | e2e28bc7e00712cf3fe5af15ccfe1836890ada0a /include/sound/soc-dai.h | |
| parent | 1b3c63acb1e52d5af04b99b9b784ff3775c63313 (diff) | |
| download | linux-d20e834e13ce349c9b901b9dd8b7013e255083e8.tar.xz | |
ASoC: soc-dai: clarify return value for get_sdw_stream()
Previous changes move to use ERR_PTR(-ENOTSUPP), but it's not clear
what implementations can return in case of errors. Explicitly document
that NULL is not a possible return value, only ERR_PTR with a negative
error code is valid.
Fixes: 308811a327c38 ('ASoC: soc-dai: return proper error for get_sdw_stream()')
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reported-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200904182854.3944-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/soc-dai.h')
| -rw-r--r-- | include/sound/soc-dai.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index 776a60529e70..8b693dade9c6 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -471,7 +471,8 @@ static inline int snd_soc_dai_set_sdw_stream(struct snd_soc_dai *dai, * This routine only retrieves that was previously configured * with snd_soc_dai_get_sdw_stream() * - * Returns pointer to stream or -ENOTSUPP if callback is not supported; + * Returns pointer to stream or an ERR_PTR value, e.g. + * ERR_PTR(-ENOTSUPP) if callback is not supported; */ static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai, int direction) |