diff mbox series

ASoC: codecs: da*: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare

Message ID 20210108085319.6912-1-vulab@iscas.ac.cn (mailing list archive)
State New, archived
Headers show
Series ASoC: codecs: da*: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare | expand

Commit Message

Xu Wang Jan. 8, 2021, 8:53 a.m. UTC
Because clk_prepare_enable() and clk_disable_unprepare() already checked
NULL clock parameter, so the additional checks are unnecessary, just
remove them.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
---
 sound/soc/codecs/da7218.c     | 13 +++++--------
 sound/soc/codecs/da7219-aad.c | 19 ++++++++-----------
 sound/soc/codecs/da7219.c     |  3 +--
 3 files changed, 14 insertions(+), 21 deletions(-)

Comments

Adam Thomson Jan. 8, 2021, 10:10 a.m. UTC | #1
On 08 January 2021 08:53, Xu Wang wrote:

> Because clk_prepare_enable() and clk_disable_unprepare() already checked
> NULL clock parameter, so the additional checks are unnecessary, just
> remove them.
> 
> Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
> ---
>  sound/soc/codecs/da7218.c     | 13 +++++--------
>  sound/soc/codecs/da7219-aad.c | 19 ++++++++-----------
>  sound/soc/codecs/da7219.c     |  3 +--
>  3 files changed, 14 insertions(+), 21 deletions(-)
> 
> diff --git a/sound/soc/codecs/da7218.c b/sound/soc/codecs/da7218.c
> index 2bfafbe9e3dc..324d95e3b48a 100644
> --- a/sound/soc/codecs/da7218.c
> +++ b/sound/soc/codecs/da7218.c
> @@ -2582,12 +2582,10 @@ static int da7218_set_bias_level(struct
> snd_soc_component *component,
>  	case SND_SOC_BIAS_PREPARE:
>  		/* Enable MCLK for transition to ON state */
>  		if (snd_soc_component_get_bias_level(component) ==
> SND_SOC_BIAS_STANDBY) {
> -			if (da7218->mclk) {
> -				ret = clk_prepare_enable(da7218->mclk);
> -				if (ret) {
> -					dev_err(component->dev, "Failed to
> enable mclk\n");
> -					return ret;
> -				}
> +			ret = clk_prepare_enable(da7218->mclk);
> +			if (ret) {
> +				dev_err(component->dev, "Failed to enable
> mclk\n");
> +				return ret;
>  			}
>  		}
> 
> @@ -2605,8 +2603,7 @@ static int da7218_set_bias_level(struct
> snd_soc_component *component,
>  					    DA7218_LDO_EN_MASK);
>  		} else {
>  			/* Remove MCLK */
> -			if (da7218->mclk)
> -				clk_disable_unprepare(da7218->mclk);
> +			clk_disable_unprepare(da7218->mclk);
>  		}
>  		break;
>  	case SND_SOC_BIAS_OFF:
> diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
> index 48081d71c22c..fa61cfc8e50c 100644
> --- a/sound/soc/codecs/da7219-aad.c
> +++ b/sound/soc/codecs/da7219-aad.c
> @@ -123,15 +123,13 @@ static void da7219_aad_hptest_work(struct work_struct
> *work)
>  	mutex_lock(&da7219->pll_lock);
> 
>  	/* Ensure MCLK is available for HP test procedure */
> -	if (da7219->mclk) {
> -		ret = clk_prepare_enable(da7219->mclk);
> -		if (ret) {
> -			dev_err(component->dev, "Failed to enable mclk -
> %d\n", ret);
> -			mutex_unlock(&da7219->pll_lock);
> -			mutex_unlock(&da7219->ctrl_lock);
> -			snd_soc_dapm_mutex_unlock(dapm);
> -			return;
> -		}
> +	ret = clk_prepare_enable(da7219->mclk);
> +	if (ret) {
> +		dev_err(component->dev, "Failed to enable mclk - %d\n", ret);
> +		mutex_unlock(&da7219->pll_lock);
> +		mutex_unlock(&da7219->ctrl_lock);
> +		snd_soc_dapm_mutex_unlock(dapm);
> +		return;
>  	}
> 
>  	/*
> @@ -318,8 +316,7 @@ static void da7219_aad_hptest_work(struct work_struct
> *work)
>  		da7219_set_pll(component, DA7219_SYSCLK_MCLK, 0);
> 
>  	/* Remove MCLK, if previously enabled */
> -	if (da7219->mclk)
> -		clk_disable_unprepare(da7219->mclk);
> +	clk_disable_unprepare(da7219->mclk);
> 
>  	mutex_unlock(&da7219->pll_lock);
>  	mutex_unlock(&da7219->ctrl_lock);
> diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c
> index e9b45daec0ca..50307cc9d640 100644
> --- a/sound/soc/codecs/da7219.c
> +++ b/sound/soc/codecs/da7219.c
> @@ -1826,8 +1826,7 @@ static int da7219_set_bias_level(struct
> snd_soc_component *component,
> 
>  		if (snd_soc_component_get_bias_level(component) ==
> SND_SOC_BIAS_PREPARE) {
>  			/* Remove MCLK */
> -			if (da7219->mclk)
> -				clk_disable_unprepare(da7219->mclk);
> +			clk_disable_unprepare(da7219->mclk);

You seem to have missed the change for clk_prepare_enable() usage in the
same function. Also as the above is now a single line if statement, you can
remove the brackets.

In addition, the normal approach would be to split the changes into separate
patches per driver, just so it's cleaner.

>  		}
>  		break;
>  	case SND_SOC_BIAS_OFF:
> --
> 2.17.1
diff mbox series

Patch

diff --git a/sound/soc/codecs/da7218.c b/sound/soc/codecs/da7218.c
index 2bfafbe9e3dc..324d95e3b48a 100644
--- a/sound/soc/codecs/da7218.c
+++ b/sound/soc/codecs/da7218.c
@@ -2582,12 +2582,10 @@  static int da7218_set_bias_level(struct snd_soc_component *component,
 	case SND_SOC_BIAS_PREPARE:
 		/* Enable MCLK for transition to ON state */
 		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_STANDBY) {
-			if (da7218->mclk) {
-				ret = clk_prepare_enable(da7218->mclk);
-				if (ret) {
-					dev_err(component->dev, "Failed to enable mclk\n");
-					return ret;
-				}
+			ret = clk_prepare_enable(da7218->mclk);
+			if (ret) {
+				dev_err(component->dev, "Failed to enable mclk\n");
+				return ret;
 			}
 		}
 
@@ -2605,8 +2603,7 @@  static int da7218_set_bias_level(struct snd_soc_component *component,
 					    DA7218_LDO_EN_MASK);
 		} else {
 			/* Remove MCLK */
-			if (da7218->mclk)
-				clk_disable_unprepare(da7218->mclk);
+			clk_disable_unprepare(da7218->mclk);
 		}
 		break;
 	case SND_SOC_BIAS_OFF:
diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
index 48081d71c22c..fa61cfc8e50c 100644
--- a/sound/soc/codecs/da7219-aad.c
+++ b/sound/soc/codecs/da7219-aad.c
@@ -123,15 +123,13 @@  static void da7219_aad_hptest_work(struct work_struct *work)
 	mutex_lock(&da7219->pll_lock);
 
 	/* Ensure MCLK is available for HP test procedure */
-	if (da7219->mclk) {
-		ret = clk_prepare_enable(da7219->mclk);
-		if (ret) {
-			dev_err(component->dev, "Failed to enable mclk - %d\n", ret);
-			mutex_unlock(&da7219->pll_lock);
-			mutex_unlock(&da7219->ctrl_lock);
-			snd_soc_dapm_mutex_unlock(dapm);
-			return;
-		}
+	ret = clk_prepare_enable(da7219->mclk);
+	if (ret) {
+		dev_err(component->dev, "Failed to enable mclk - %d\n", ret);
+		mutex_unlock(&da7219->pll_lock);
+		mutex_unlock(&da7219->ctrl_lock);
+		snd_soc_dapm_mutex_unlock(dapm);
+		return;
 	}
 
 	/*
@@ -318,8 +316,7 @@  static void da7219_aad_hptest_work(struct work_struct *work)
 		da7219_set_pll(component, DA7219_SYSCLK_MCLK, 0);
 
 	/* Remove MCLK, if previously enabled */
-	if (da7219->mclk)
-		clk_disable_unprepare(da7219->mclk);
+	clk_disable_unprepare(da7219->mclk);
 
 	mutex_unlock(&da7219->pll_lock);
 	mutex_unlock(&da7219->ctrl_lock);
diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c
index e9b45daec0ca..50307cc9d640 100644
--- a/sound/soc/codecs/da7219.c
+++ b/sound/soc/codecs/da7219.c
@@ -1826,8 +1826,7 @@  static int da7219_set_bias_level(struct snd_soc_component *component,
 
 		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_PREPARE) {
 			/* Remove MCLK */
-			if (da7219->mclk)
-				clk_disable_unprepare(da7219->mclk);
+			clk_disable_unprepare(da7219->mclk);
 		}
 		break;
 	case SND_SOC_BIAS_OFF: