From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 6 Jun 2022 20:37:48 +0000 (-0500)
Subject: ASoC: Intel: sof_sdw: handle errors on card registration
X-Git-Tag: v5.15.73~2232
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f2556ce6b35ae0fc72000a4daa21ded12665e2f2;p=platform%2Fkernel%2Flinux-rpi.git

ASoC: Intel: sof_sdw: handle errors on card registration

[ Upstream commit fe154c4ff376bc31041c6441958a08243df09c99 ]

If the card registration fails, typically because of deferred probes,
the device properties added for headset codecs are not removed, which
leads to kernel oopses in driver bind/unbind tests.

We already clean-up the device properties when the card is removed,
this code can be moved as a helper and called upon card registration
errors.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220606203752.144159-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index 0bf3e56..abe39a0 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -1323,6 +1323,33 @@ static struct snd_soc_card card_sof_sdw = {
 	.late_probe = sof_sdw_card_late_probe,
 };
 
+static void mc_dailink_exit_loop(struct snd_soc_card *card)
+{
+	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(card, link);
+				if (ret)
+					dev_warn(card->dev,
+						 "codec exit failed %d\n",
+						 ret);
+				break;
+			}
+		}
+	}
+}
+
 static int mc_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = &card_sof_sdw;
@@ -1387,6 +1414,7 @@ static int mc_probe(struct platform_device *pdev)
 	ret = devm_snd_soc_register_card(&pdev->dev, card);
 	if (ret) {
 		dev_err(card->dev, "snd_soc_register_card failed %d\n", ret);
+		mc_dailink_exit_loop(card);
 		return ret;
 	}
 
@@ -1398,29 +1426,8 @@ static int mc_probe(struct platform_device *pdev)
 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(card, link);
-				if (ret)
-					dev_warn(&pdev->dev,
-						 "codec exit failed %d\n",
-						 ret);
-				break;
-			}
-		}
-	}
+	mc_dailink_exit_loop(card);
 
 	return 0;
 }