[alsa-devel] Applied "ASoC: max98925: Return proper error if revision mismatch" to the asoc tree

[Mark Brown]

The patch

   ASoC: max98925: Return proper error if revision mismatch

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From d6e18b8295593d8f59e92f6634577cbacae14629 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin at ingics.com>
Date: Fri, 13 Oct 2017 09:21:01 +0800
Subject: [PATCH] ASoC: max98925: Return proper error if revision mismatch

Return proper error instead of 0 if the revision does not match.

Signed-off-by: Axel Lin <axel.lin at ingics.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/codecs/max98925.c | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/max98925.c b/sound/soc/codecs/max98925.c
index 327eaa25c9bd..921f95fc396d 100644
--- a/sound/soc/codecs/max98925.c
+++ b/sound/soc/codecs/max98925.c
@@ -579,7 +579,7 @@ static int max98925_i2c_probe(struct i2c_client *i2c,
 		ret = PTR_ERR(max98925->regmap);
 		dev_err(&i2c->dev,
 				"Failed to allocate regmap: %d\n", ret);
-		goto err_out;
+		return ret;
 	}
 
 	if (!of_property_read_u32(i2c->dev.of_node, "vmon-slot-no", &value)) {
@@ -596,16 +596,20 @@ static int max98925_i2c_probe(struct i2c_client *i2c,
 		}
 		max98925->i_slot = value;
 	}
-	ret = regmap_read(max98925->regmap,
-			MAX98925_REV_VERSION, &reg);
-	if ((ret < 0) ||
-		((reg != MAX98925_VERSION) &&
-		(reg != MAX98925_VERSION1))) {
-		dev_err(&i2c->dev,
-			"device initialization error (%d 0x%02X)\n",
+
+	ret = regmap_read(max98925->regmap, MAX98925_REV_VERSION, &reg);
+	if (ret < 0) {
+		dev_err(&i2c->dev, "Read revision failed\n");
+		return ret;
+	}
+
+	if ((reg != MAX98925_VERSION) && (reg != MAX98925_VERSION1)) {
+		ret = -ENODEV;
+		dev_err(&i2c->dev, "Invalid revision (%d 0x%02X)\n",
 			ret, reg);
-		goto err_out;
+		return ret;
 	}
+
 	dev_info(&i2c->dev, "device version 0x%02X\n", reg);
 
 	ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_max98925,
@@ -613,7 +617,6 @@ static int max98925_i2c_probe(struct i2c_client *i2c,
 	if (ret < 0)
 		dev_err(&i2c->dev,
 				"Failed to register codec: %d\n", ret);
-err_out:
 	return ret;
 }
 
-- 
2.14.1