ASoC: pcm: Improve error logging

Use the standard logging macros and use dev_ variants where we can, also
reporting error codes whenever we report an error. These changes (the
error codes in particular) make it noticeably easier to figure out what
went wrong just from the basic dmesg output.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

sound/soc/soc-pcm.c

@@ -123,33 +123,35 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
 	if (cpu_dai->driver->ops->startup) {
 		ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: can't open interface %s\n",
-				cpu_dai->name);
+			dev_err(cpu_dai->dev, "can't open interface %s: %d\n",
+				cpu_dai->name, ret);
 			goto out;
 		}
 	}
 
 	if (platform->driver->ops && platform->driver->ops->open) {
 		ret = platform->driver->ops->open(substream);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: can't open platform %s\n", platform->name);
+			dev_err(platform->dev, "can't open platform %s: %d\n",
+				platform->name, ret);
 			goto platform_err;
 		}
 	}
 
 	if (codec_dai->driver->ops->startup) {
 		ret = codec_dai->driver->ops->startup(substream, codec_dai);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: can't open codec %s\n",
-				codec_dai->name);
+			dev_err(codec_dai->dev, "can't open codec %s: %d\n",
+				codec_dai->name, ret);
 			goto codec_dai_err;
 		}
 	}
 
 	if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
 		ret = rtd->dai_link->ops->startup(substream);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name);
+			pr_err("asoc: %s startup failed: %d\n",
+			       rtd->dai_link->name, ret);
 			goto machine_err;
 		}
 	}
@@ -413,31 +415,34 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
 	if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
 		ret = rtd->dai_link->ops->prepare(substream);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: machine prepare error\n");
+			pr_err("asoc: machine prepare error: %d\n", ret);
 			goto out;
 		}
 	}
 
 	if (platform->driver->ops && platform->driver->ops->prepare) {
 		ret = platform->driver->ops->prepare(substream);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: platform prepare error\n");
+			dev_err(platform->dev, "platform prepare error: %d\n",
+				ret);
 			goto out;
 		}
 	}
 
 	if (codec_dai->driver->ops->prepare) {
 		ret = codec_dai->driver->ops->prepare(substream, codec_dai);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: codec DAI prepare error\n");
+			dev_err(codec_dai->dev, "DAI prepare error: %d\n",
+				ret);
 			goto out;
 		}
 	}
 
 	if (cpu_dai->driver->ops->prepare) {
 		ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: cpu DAI prepare error\n");
+			dev_err(cpu_dai->dev, "DAI prepare error: %d\n",
+				ret);
 			goto out;
 		}
 	}
@@ -484,34 +489,34 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
 	if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
 		ret = rtd->dai_link->ops->hw_params(substream, params);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: machine hw_params failed\n");
+			pr_err("asoc: machine hw_params failed: %d\n", ret);
 			goto out;
 		}
 	}
 
 	if (codec_dai->driver->ops->hw_params) {
 		ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: can't set codec %s hw params\n",
-				codec_dai->name);
+			dev_err(codec_dai->dev, "can't set %s hw params: %d\n",
+				codec_dai->name, ret);
 			goto codec_err;
 		}
 	}
 
 	if (cpu_dai->driver->ops->hw_params) {
 		ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: interface %s hw params failed\n",
-				cpu_dai->name);
+			dev_err(cpu_dai->dev, "%s hw params failed: %d\n",
+				cpu_dai->name, ret);
 			goto interface_err;
 		}
 	}
 
 	if (platform->driver->ops && platform->driver->ops->hw_params) {
 		ret = platform->driver->ops->hw_params(substream, params);
 		if (ret < 0) {
-			printk(KERN_ERR "asoc: platform %s hw params failed\n",
-				platform->name);
+			dev_err(platform->dev, "%s hw params failed: %d\n",
+			       platform->name, ret);
 			goto platform_err;
 		}
 	}