linux-kernel - [PATCH] ASoC: fsl_xcvr: move reset assert into runtime

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Message-Id: <1613984990-5534-1-git-send-email-shengjiu.wang@nxp.com>
Date:   Mon, 22 Feb 2021 17:09:50 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     timur@...nel.org, nicoleotsuka@...il.com, Xiubo.Lee@...il.com,
        festevam@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, alsa-devel@...a-project.org
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: fsl_xcvr: move reset assert into runtime_resume

From: Viorel Suman <viorel.suman@....com>

Move reset assert into runtime_resume since we
cannot rely on reset assert state when the device
is put out from suspend.

Signed-off-by: Viorel Suman <viorel.suman@....com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/fsl/fsl_xcvr.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index dd228b421e2c..4857e0df8681 100644
--- a/sound/soc/fsl/fsl_xcvr.c
+++ b/sound/soc/fsl/fsl_xcvr.c
@@ -1243,10 +1243,6 @@ static __maybe_unused int fsl_xcvr_runtime_suspend(struct device *dev)
 	if (ret < 0)
 		dev_err(dev, "Failed to assert M0+ core: %d\n", ret);
 
-	ret = reset_control_assert(xcvr->reset);
-	if (ret < 0)
-		dev_err(dev, "Failed to assert M0+ reset: %d\n", ret);
-
 	regcache_cache_only(xcvr->regmap, true);
 
 	clk_disable_unprepare(xcvr->spba_clk);
@@ -1262,6 +1258,12 @@ static __maybe_unused int fsl_xcvr_runtime_resume(struct device *dev)
 	struct fsl_xcvr *xcvr = dev_get_drvdata(dev);
 	int ret;
 
+	ret = reset_control_assert(xcvr->reset);
+	if (ret < 0) {
+		dev_err(dev, "Failed to assert M0+ reset: %d\n", ret);
+		return ret;
+	}
+
 	ret = clk_prepare_enable(xcvr->ipg_clk);
 	if (ret) {
 		dev_err(dev, "failed to start IPG clock.\n");
-- 
2.27.0