linux-kernel - [PATCH] ASoC: tpa6130a2: unmerge power enable error path from power disable path

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Date:   Mon, 26 Sep 2016 13:35:50 +0300
From:   Nikita Yushchenko <nikita.yoush@...entembedded.com>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Helen Koike <helen.koike@...labora.co.uk>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Sebastian Reichel <sre@...nel.org>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Cc:     Chris Healy <cphealy@...il.com>,
        Nikita Yushchenko <nikita.yoush@...entembedded.com>
Subject: [PATCH] ASoC: tpa6130a2: unmerge power enable error path from power disable path

Code undo operations in power enable errror path explicitly, instead of
reusing power disable path and playing with return values there.

Signed-off-by: Nikita Yushchenko <nikita.yoush@...entembedded.com>
---
I doubt that copying 7 lines into error path is better than having a tiny
logic with return values, but still here it is.

 sound/soc/codecs/tpa6130a2.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
index 3b6faed91d7e..3712db0881d0 100644
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -71,7 +71,14 @@ static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
 		if (ret != 0) {
 			dev_err(data->dev,
 				"Failed to sync registers: %d\n", ret);
-			goto regcache_sync_failed;
+			regcache_cache_only(data->regmap, true);
+			if (data->power_gpio >= 0)
+				gpio_set_value(data->power_gpio, 0);
+			ret2 = regulator_disable(data->supply);
+			if (ret2 != 0)
+				dev_err(data->dev,
+					"Failed to disable supply: %d\n", ret2);
+			return ret;
 		}
 	} else {
 		/* Powered off device does not retain registers. While device
@@ -79,18 +86,17 @@ static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
 		 * happen in cache only.
 		 */
 		regcache_mark_dirty(data->regmap);
-regcache_sync_failed:
 		regcache_cache_only(data->regmap, true);
 
 		/* Power off */
 		if (data->power_gpio >= 0)
 			gpio_set_value(data->power_gpio, 0);
 
-		ret2 = regulator_disable(data->supply);
-		if (ret2 != 0) {
+		ret = regulator_disable(data->supply);
+		if (ret != 0) {
 			dev_err(data->dev,
-				"Failed to disable supply: %d\n", ret2);
-			return ret ? ret : ret2;
+				"Failed to disable supply: %d\n", ret);
+			return ret;
 		}
 	}
 
-- 
2.1.4