linux-kernel - [PATCH 3.16 087/136] ASoC: kirkwood: fix external clock probe defer

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Message-ID: <lsq.1576543535.75858996@decadent.org.uk>
Date:   Tue, 17 Dec 2019 00:47:01 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Russell King" <rmk+kernel@...linux.org.uk>,
        "Mark Brown" <broonie@...nel.org>
Subject: [PATCH 3.16 087/136] ASoC: kirkwood: fix external clock probe defer

3.16.80-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Russell King <rmk+kernel@...linux.org.uk>

commit 4523817d51bc3b2ef38da768d004fda2c8bc41de upstream.

When our call to get the external clock fails, we forget to clean up
the enabled internal clock correctly.  Enable the clock after we have
obtained all our resources.

Fixes: 84aac6c79bfd ("ASoC: kirkwood: fix loss of external clock at probe time")
Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
Link: https://lore.kernel.org/r/E1iNGyK-0004oF-6A@rmk-PC.armlinux.org.uk
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 sound/soc/kirkwood/kirkwood-i2s.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/sound/soc/kirkwood/kirkwood-i2s.c
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -557,10 +557,6 @@ static int kirkwood_i2s_dev_probe(struct
 		return PTR_ERR(priv->clk);
 	}
 
-	err = clk_prepare_enable(priv->clk);
-	if (err < 0)
-		return err;
-
 	priv->extclk = devm_clk_get(&pdev->dev, "extclk");
 	if (IS_ERR(priv->extclk)) {
 		if (PTR_ERR(priv->extclk) == -EPROBE_DEFER)
@@ -576,6 +572,10 @@ static int kirkwood_i2s_dev_probe(struct
 		}
 	}
 
+	err = clk_prepare_enable(priv->clk);
+	if (err < 0)
+		return err;
+
 	/* Some sensible defaults - this reflects the powerup values */
 	priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24;
 	priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24;