[alsa-devel] [PATCH] ASoC: wm2200: add missed operations in remove and probe failure

[alsa-devel] [PATCH] ASoC: wm2200: add missed operations in remove and probe failure

[Chuhong Yuan]

This driver misses calls to pm_runtime_disable and regulator_bulk_disable
in remove and a call to free_irq in probe failure.
Add the calls to fix it.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
---
 sound/soc/codecs/wm2200.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/soc/codecs/wm2200.c b/sound/soc/codecs/wm2200.c
index cf64e109c658..7b087d94141b 100644
--- a/sound/soc/codecs/wm2200.c
+++ b/sound/soc/codecs/wm2200.c
@@ -2410,6 +2410,8 @@ static int wm2200_i2c_probe(struct i2c_client *i2c,
 
 err_pm_runtime:
 	pm_runtime_disable(&i2c->dev);
+	if (i2c->irq)
+		free_irq(i2c->irq, wm2200);
 err_reset:
 	if (wm2200->pdata.reset)
 		gpio_set_value_cansleep(wm2200->pdata.reset, 0);
@@ -2426,12 +2428,15 @@ static int wm2200_i2c_remove(struct i2c_client *i2c)
 {
 	struct wm2200_priv *wm2200 = i2c_get_clientdata(i2c);
 
+	pm_runtime_disable(&i2c->dev);
 	if (i2c->irq)
 		free_irq(i2c->irq, wm2200);
 	if (wm2200->pdata.reset)
 		gpio_set_value_cansleep(wm2200->pdata.reset, 0);
 	if (wm2200->pdata.ldo_ena)
 		gpio_set_value_cansleep(wm2200->pdata.ldo_ena, 0);
+	regulator_bulk_disable(ARRAY_SIZE(wm2200->core_supplies),
+			       wm2200->core_supplies);
 
 	return 0;
 }
-- 
2.24.0

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Re: [alsa-devel] [PATCH] ASoC: wm2200: add missed operations in remove and probe failure

[Charles Keepax]

On Mon, Nov 18, 2019 at 03:36:33PM +0800, Chuhong Yuan wrote:
> This driver misses calls to pm_runtime_disable and regulator_bulk_disable
> in remove and a call to free_irq in probe failure.
> Add the calls to fix it.
> 
> Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
> ---
>  sound/soc/codecs/wm2200.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/sound/soc/codecs/wm2200.c b/sound/soc/codecs/wm2200.c
> index cf64e109c658..7b087d94141b 100644
> --- a/sound/soc/codecs/wm2200.c
> +++ b/sound/soc/codecs/wm2200.c
> @@ -2410,6 +2410,8 @@ static int wm2200_i2c_probe(struct i2c_client *i2c,
>  
>  err_pm_runtime:
>  	pm_runtime_disable(&i2c->dev);
> +	if (i2c->irq)
> +		free_irq(i2c->irq, wm2200);

Might be worth also adding a return if the request of the IRQ
fails. We will get a large WARN in the log if the IRQ request
failed, then we fall down this error path.

>  err_reset:
>  	if (wm2200->pdata.reset)
>  		gpio_set_value_cansleep(wm2200->pdata.reset, 0);
> @@ -2426,12 +2428,15 @@ static int wm2200_i2c_remove(struct i2c_client *i2c)
>  {
>  	struct wm2200_priv *wm2200 = i2c_get_clientdata(i2c);
>  
> +	pm_runtime_disable(&i2c->dev);
>  	if (i2c->irq)
>  		free_irq(i2c->irq, wm2200);
>  	if (wm2200->pdata.reset)
>  		gpio_set_value_cansleep(wm2200->pdata.reset, 0);
>  	if (wm2200->pdata.ldo_ena)
>  		gpio_set_value_cansleep(wm2200->pdata.ldo_ena, 0);
> +	regulator_bulk_disable(ARRAY_SIZE(wm2200->core_supplies),
> +			       wm2200->core_supplies);

This one is a bit trickier since this regulator is being
controlled by PM runtime, and I don't think it necessarily leaves
things in an enabled state when it is disabled.

Thanks,
Charles
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[alsa-devel] Applied "ASoC: wm2200: add missed operations in remove and probe failure" to the asoc tree

[Mark Brown]

The patch

   ASoC: wm2200: add missed operations in remove and probe failure

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

From 51af759a930c18d2ee450772e01c614564772b2a Mon Sep 17 00:00:00 2001
From: Chuhong Yuan <hslester96@gmail.com>
Date: Mon, 18 Nov 2019 15:36:33 +0800
Subject: [PATCH] ASoC: wm2200: add missed operations in remove and probe
 failure

This driver misses calls to pm_runtime_disable and regulator_bulk_disable
in remove and a call to free_irq in probe failure.
Add the calls to fix it.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Link: https://lore.kernel.org/r/20191118073633.28237-1-hslester96@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/codecs/wm2200.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/soc/codecs/wm2200.c b/sound/soc/codecs/wm2200.c
index cf64e109c658..7b087d94141b 100644
--- a/sound/soc/codecs/wm2200.c
+++ b/sound/soc/codecs/wm2200.c
@@ -2410,6 +2410,8 @@ static int wm2200_i2c_probe(struct i2c_client *i2c,
 
 err_pm_runtime:
 	pm_runtime_disable(&i2c->dev);
+	if (i2c->irq)
+		free_irq(i2c->irq, wm2200);
 err_reset:
 	if (wm2200->pdata.reset)
 		gpio_set_value_cansleep(wm2200->pdata.reset, 0);
@@ -2426,12 +2428,15 @@ static int wm2200_i2c_remove(struct i2c_client *i2c)
 {
 	struct wm2200_priv *wm2200 = i2c_get_clientdata(i2c);
 
+	pm_runtime_disable(&i2c->dev);
 	if (i2c->irq)
 		free_irq(i2c->irq, wm2200);
 	if (wm2200->pdata.reset)
 		gpio_set_value_cansleep(wm2200->pdata.reset, 0);
 	if (wm2200->pdata.ldo_ena)
 		gpio_set_value_cansleep(wm2200->pdata.ldo_ena, 0);
+	regulator_bulk_disable(ARRAY_SIZE(wm2200->core_supplies),
+			       wm2200->core_supplies);
 
 	return 0;
 }
-- 
2.20.1

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