linux-kernel - [PATCH 4.14 042/146] ASoC: fsl_ssi: AC97 ops need regmap, clock and cleaning up on failure

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Date:   Mon,  1 Jan 2018 15:37:13 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 4.14 042/146] ASoC: fsl_ssi: AC97 ops need regmap, clock and cleaning up on failure

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Maciej S. Szmigiero <mail@...iej.szmigiero.name>

commit 695b78b548d8a26288f041e907ff17758df9e1d5 upstream.

AC'97 ops (register read / write) need SSI regmap and clock, so they have
to be set after them.

We also need to set these ops back to NULL if we fail the probe.

Signed-off-by: Maciej S. Szmigiero <mail@...iej.szmigiero.name>
Acked-by: Nicolin Chen <nicoleotsuka@...il.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/soc/fsl/fsl_ssi.c |   18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -1452,12 +1452,6 @@ static int fsl_ssi_probe(struct platform
 				sizeof(fsl_ssi_ac97_dai));
 
 		fsl_ac97_data = ssi_private;
-
-		ret = snd_soc_set_ac97_ops_of_reset(&fsl_ssi_ac97_ops, pdev);
-		if (ret) {
-			dev_err(&pdev->dev, "could not set AC'97 ops\n");
-			return ret;
-		}
 	} else {
 		/* Initialize this copy of the CPU DAI driver structure */
 		memcpy(&ssi_private->cpu_dai_drv, &fsl_ssi_dai_template,
@@ -1568,6 +1562,14 @@ static int fsl_ssi_probe(struct platform
 			return ret;
 	}
 
+	if (fsl_ssi_is_ac97(ssi_private)) {
+		ret = snd_soc_set_ac97_ops_of_reset(&fsl_ssi_ac97_ops, pdev);
+		if (ret) {
+			dev_err(&pdev->dev, "could not set AC'97 ops\n");
+			goto error_ac97_ops;
+		}
+	}
+
 	ret = devm_snd_soc_register_component(&pdev->dev, &fsl_ssi_component,
 					      &ssi_private->cpu_dai_drv, 1);
 	if (ret) {
@@ -1651,6 +1653,10 @@ error_sound_card:
 	fsl_ssi_debugfs_remove(&ssi_private->dbg_stats);
 
 error_asoc_register:
+	if (fsl_ssi_is_ac97(ssi_private))
+		snd_soc_set_ac97_ops(NULL);
+
+error_ac97_ops:
 	if (ssi_private->soc->imx)
 		fsl_ssi_imx_clean(pdev, ssi_private);