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From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: broonie@kernel.org
Cc: alsa-devel@alsa-project.org, lgirdwood@gmail.com, perex@perex.cz,
	linux-kernel@vger.kernel.org,
	pierre-louis.bossart@linux.intel.com, vkoul@kernel.org,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH] ASoC: soc-dai: return proper error for get_sdw_stream()
Date: Mon, 16 Mar 2020 15:11:10 +0000	[thread overview]
Message-ID: <20200316151110.2580-1-srinivas.kandagatla@linaro.org> (raw)

snd_soc_dai_get_sdw_stream() returns null if dai does not support
this callback, this is no very useful for the caller to
differentiate if this is an error or unsupported call for the dai.

return -ENOTSUPP in cases where this callback is not supported.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 include/sound/soc-dai.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 7f70db149b81..78bac995db15 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -433,7 +433,7 @@ 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 NULL;
+ * Returns pointer to stream or -ENOTSUPP if callback is not supported;
  */
 static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai,
 					       int direction)
@@ -441,7 +441,7 @@ static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai,
 	if (dai->driver->ops->get_sdw_stream)
 		return dai->driver->ops->get_sdw_stream(dai, direction);
 	else
-		return NULL;
+		return ERR_PTR(-ENOTSUPP);
 }
 
 #endif
-- 
2.21.0


WARNING: multiple messages have this Message-ID (diff)
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: broonie@kernel.org
Cc: alsa-devel@alsa-project.org, lgirdwood@gmail.com,
	linux-kernel@vger.kernel.org,
	pierre-louis.bossart@linux.intel.com, vkoul@kernel.org,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH] ASoC: soc-dai: return proper error for get_sdw_stream()
Date: Mon, 16 Mar 2020 15:11:10 +0000	[thread overview]
Message-ID: <20200316151110.2580-1-srinivas.kandagatla@linaro.org> (raw)

snd_soc_dai_get_sdw_stream() returns null if dai does not support
this callback, this is no very useful for the caller to
differentiate if this is an error or unsupported call for the dai.

return -ENOTSUPP in cases where this callback is not supported.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 include/sound/soc-dai.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 7f70db149b81..78bac995db15 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -433,7 +433,7 @@ 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 NULL;
+ * Returns pointer to stream or -ENOTSUPP if callback is not supported;
  */
 static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai,
 					       int direction)
@@ -441,7 +441,7 @@ static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai,
 	if (dai->driver->ops->get_sdw_stream)
 		return dai->driver->ops->get_sdw_stream(dai, direction);
 	else
-		return NULL;
+		return ERR_PTR(-ENOTSUPP);
 }
 
 #endif
-- 
2.21.0


             reply	other threads:[~2020-03-16 15:11 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-16 15:11 Srinivas Kandagatla [this message]
2020-03-16 15:11 ` [PATCH] ASoC: soc-dai: return proper error for get_sdw_stream() Srinivas Kandagatla
2020-03-16 18:07 ` Applied "ASoC: soc-dai: return proper error for get_sdw_stream()" to the asoc tree Mark Brown
2020-03-16 18:07   ` Mark Brown

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