[PATCH 0/3] ASoC: drop bogus container_of() error handling

[PATCH 0/3] ASoC: drop bogus container_of() error handling

[Johan Hovold]

The dev_to_sdw_dev() helper uses container_of() to return the containing
soundwire device structure of its pointer argument and will never
return NULL.

Johan


Johan (3):
  ASoC: codecs: pm4125: drop bogus container_of() error handling
  ASoC: codecs: wcd937x: drop bogus container_of() error handling
  ASoC: soc_sdw_utils: drop bogus container_of() error handling

 sound/soc/codecs/pm4125.c           | 6 ------
 sound/soc/codecs/wcd937x.c          | 5 -----
 sound/soc/sdw_utils/soc_sdw_utils.c | 4 ----
 3 files changed, 15 deletions(-)

-- 
2.51.2

[PATCH 1/3] ASoC: codecs: pm4125: drop bogus container_of() error handling

[Johan Hovold]

The dev_to_sdw_dev() helper uses container_of() to return the containing
soundwire device structure of its pointer argument and will never return
NULL.

Fixes: 8ad529484937 ("ASoC: codecs: add new pm4125 audio codec driver")
Cc: Alexey Klimov <alexey.klimov@linaro.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/codecs/pm4125.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/sound/soc/codecs/pm4125.c b/sound/soc/codecs/pm4125.c
index 43dcafff6c77..1f0a3f5389f1 100644
--- a/sound/soc/codecs/pm4125.c
+++ b/sound/soc/codecs/pm4125.c
@@ -1533,13 +1533,7 @@ static int pm4125_bind(struct device *dev)
 
 	pm4125->sdw_priv[AIF1_CAP] = dev_get_drvdata(pm4125->txdev);
 	pm4125->sdw_priv[AIF1_CAP]->pm4125 = pm4125;
-
 	pm4125->tx_sdw_dev = dev_to_sdw_dev(pm4125->txdev);
-	if (!pm4125->tx_sdw_dev) {
-		dev_err(dev, "could not get txslave with matching of dev\n");
-		ret = -EINVAL;
-		goto error_put_tx;
-	}
 
 	/*
 	 * As TX is the main CSR reg interface, which should not be suspended first.
-- 
2.51.2

Re: [PATCH 1/3] ASoC: codecs: pm4125: drop bogus container_of() error handling

[Alexey Klimov]

On Fri Dec 19, 2025 at 2:27 PM GMT, Johan Hovold wrote:
> The dev_to_sdw_dev() helper uses container_of() to return the containing
> soundwire device structure of its pointer argument and will never return
> NULL.
>
> Fixes: 8ad529484937 ("ASoC: codecs: add new pm4125 audio codec driver")
> Cc: Alexey Klimov <alexey.klimov@linaro.org>
> Signed-off-by: Johan Hovold <johan@kernel.org>

I was about to ask to check other drivers/codecs, most likely
wcd937x as one of the reference points to pm4125 codec,
but you already did. Thank you for checking this.

Acked-by: Alexey Klimov <alexey.klimov@linaro.org>

Best regards,
Alexey

[PATCH 2/3] ASoC: codecs: wcd937x: drop bogus container_of() error handling

[Johan Hovold]

The dev_to_sdw_dev() helper uses container_of() to return the containing
soundwire device structure of its pointer argument and will never return
NULL.

Fixes: 9be3ec196da4 ("ASoC: codecs: wcd937x: add wcd937x codec driver")
Cc: Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/codecs/wcd937x.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/sound/soc/codecs/wcd937x.c b/sound/soc/codecs/wcd937x.c
index f4dbcf04be49..10a2d598caa7 100644
--- a/sound/soc/codecs/wcd937x.c
+++ b/sound/soc/codecs/wcd937x.c
@@ -2763,11 +2763,6 @@ static int wcd937x_bind(struct device *dev)
 	wcd937x->sdw_priv[AIF1_CAP] = dev_get_drvdata(wcd937x->txdev);
 	wcd937x->sdw_priv[AIF1_CAP]->wcd937x = wcd937x;
 	wcd937x->tx_sdw_dev = dev_to_sdw_dev(wcd937x->txdev);
-	if (!wcd937x->tx_sdw_dev) {
-		dev_err(dev, "could not get txslave with matching of dev\n");
-		ret = -EINVAL;
-		goto err_put_txdev;
-	}
 
 	/*
 	 * As TX is the main CSR reg interface, which should not be suspended first.
-- 
2.51.2

[PATCH 3/3] ASoC: soc_sdw_utils: drop bogus container_of() error handling

[Johan Hovold]

The dev_to_sdw_dev() helper uses container_of() to return the containing
soundwire device structure of its pointer argument and will never return
NULL.

Fixes: 4f8ef33dd44a ("ASoC: soc_sdw_utils: skip the endpoint that doesn't present")
Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 sound/soc/sdw_utils/soc_sdw_utils.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/sound/soc/sdw_utils/soc_sdw_utils.c b/sound/soc/sdw_utils/soc_sdw_utils.c
index 6c656b2f7f3a..f62e291c089f 100644
--- a/sound/soc/sdw_utils/soc_sdw_utils.c
+++ b/sound/soc/sdw_utils/soc_sdw_utils.c
@@ -1414,10 +1414,6 @@ static int is_sdca_endpoint_present(struct device *dev,
 	}
 
 	slave = dev_to_sdw_dev(sdw_dev);
-	if (!slave) {
-		ret = -EINVAL;
-		goto put_device;
-	}
 
 	/* Make sure BIOS provides SDCA properties */
 	if (!slave->sdca_data.interface_revision) {
-- 
2.51.2

Re: [PATCH 3/3] ASoC: soc_sdw_utils: drop bogus container_of() error handling

[Konrad Dybcio]

On 12/19/25 3:27 PM, Johan Hovold wrote:
> The dev_to_sdw_dev() helper uses container_of() to return the containing
> soundwire device structure of its pointer argument and will never return
> NULL.
> 
> Fixes: 4f8ef33dd44a ("ASoC: soc_sdw_utils: skip the endpoint that doesn't present")
> Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad

Re: [PATCH 0/3] ASoC: drop bogus container_of() error handling

[Dmitry Baryshkov]

On Fri, Dec 19, 2025 at 03:27:12PM +0100, Johan Hovold wrote:
> The dev_to_sdw_dev() helper uses container_of() to return the containing
> soundwire device structure of its pointer argument and will never
> return NULL.
> 
> Johan
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry

Re: [PATCH 0/3] ASoC: drop bogus container_of() error handling

[Mark Brown]

On Fri, 19 Dec 2025 15:27:12 +0100, Johan Hovold wrote:
> The dev_to_sdw_dev() helper uses container_of() to return the containing
> soundwire device structure of its pointer argument and will never
> return NULL.
> 
> Johan
> 
> 
> [...]

Applied to

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

Thanks!

[1/3] ASoC: codecs: pm4125: drop bogus container_of() error handling
      commit: 54fa71f5f965fa3ec8846cef9d1154bcb2ba2850
[2/3] ASoC: codecs: wcd937x: drop bogus container_of() error handling
      commit: 61a50d6f58b41e8a7e68d8fc8fc6bfbe30d790d8
[3/3] ASoC: soc_sdw_utils: drop bogus container_of() error handling
      commit: 870b10f61d527fec594e0888f18cc4f32c47433d

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