From: Pierre-Louis Bossart Date: Fri, 4 Sep 2020 18:28:52 +0000 (+0800) Subject: ASoC: soc-dai: clarify return value for get_sdw_stream() X-Git-Tag: Ubuntu-5.13.0-19.19~4651^2^2~137^2~2 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=d20e834e13ce349c9b901b9dd8b7013e255083e8;p=mirror_ubuntu-jammy-kernel.git 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 Reported-by: Bard Liao Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Signed-off-by: Bard Liao Link: https://lore.kernel.org/r/20200904182854.3944-2-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown --- 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)