[PATCH] ASoC: intel: sof_sdw: add .exit callback function

[PATCH] ASoC: intel: sof_sdw: add .exit callback function

[Bard Liao]

We may allocate some resources in sof_sdw_codec_info .init function.
Adding a corresponding .exit function can help to release these resources.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
---
 sound/soc/intel/boards/sof_sdw.c        | 31 +++++++++++++++++++++++++
 sound/soc/intel/boards/sof_sdw_common.h |  1 +
 2 files changed, 32 insertions(+)

diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index 2463d432bf4d..4bc1ed757009 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -1032,12 +1032,43 @@ static int mc_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static int mc_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct snd_soc_dai_link *link;
+	int ret;
+	int i, j;
+
+	for (i = 0; i < ARRAY_SIZE(codec_info_list); i++) {
+		if (!codec_info_list[i].exit)
+			continue;
+		/*
+		 * We don't need to call .exit function if there is no matched
+		 * dai link found.
+		 */
+		for_each_card_prelinks(card, j, link) {
+			if (!strcmp(link->codecs[0].dai_name,
+				    codec_info_list[i].dai_name)) {
+				ret = codec_info_list[i].exit(&pdev->dev, link);
+				if (ret)
+					dev_warn(&pdev->dev,
+						 "codec exit failed %d\n",
+						 ret);
+				break;
+			}
+		}
+	}
+
+	return 0;
+}
+
 static struct platform_driver sof_sdw_driver = {
 	.driver = {
 		.name = "sof_sdw",
 		.pm = &snd_soc_pm_ops,
 	},
 	.probe = mc_probe,
+	.remove = mc_remove,
 };
 
 module_platform_driver(sof_sdw_driver);
diff --git a/sound/soc/intel/boards/sof_sdw_common.h b/sound/soc/intel/boards/sof_sdw_common.h
index 12e32439ba46..76d6c0c3839d 100644
--- a/sound/soc/intel/boards/sof_sdw_common.h
+++ b/sound/soc/intel/boards/sof_sdw_common.h
@@ -63,6 +63,7 @@ struct sof_sdw_codec_info {
 		     struct sof_sdw_codec_info *info,
 		     bool playback);
 
+	int (*exit)(struct device *dev, struct snd_soc_dai_link *dai_link);
 	bool late_probe;
 	int (*codec_card_late_probe)(struct snd_soc_card *card);
 };
-- 
2.17.1

Re: [PATCH] ASoC: intel: sof_sdw: add .exit callback function

[Mark Brown]

On Thu, 20 Aug 2020 21:45:42 +0800, Bard Liao wrote:
> We may allocate some resources in sof_sdw_codec_info .init function.
> Adding a corresponding .exit function can help to release these resources.

Applied to

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

Thanks!

[1/1] ASoC: intel: sof_sdw: add .exit callback function
      commit: 751365035b4f360369ed6b0990283fd25d4ee32c

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