[ALSA] ASoC - Fix build warnings in soc-core.c

This patch fixes some build warnings in soc-core.c
Changes:-
 o Check the return value of soc_ac97_dev_register()
 o Check return value of calls to device_create_file()

Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 26 insertions, 9 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 8d6ff047d7a0..2ce0c8251dc3 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1438,12 +1438,18 @@ int snd_soc_register_card(struct snd_soc_device *socdev)
 {
         struct snd_soc_codec *codec = socdev->codec;
         struct snd_soc_machine *machine = socdev->machine;
-        int ret = 0, i, ac97 = 0;
+        int ret = 0, i, ac97 = 0, err = 0;
 
         mutex_lock(&codec->mutex);
         for(i = 0; i < machine->num_links; i++) {
-                if (socdev->machine->dai_link[i].init)
-                        socdev->machine->dai_link[i].init(codec);
+                if (socdev->machine->dai_link[i].init) {
+                        err = socdev->machine->dai_link[i].init(codec);
+                        if (err < 0) {
+                                printk(KERN_ERR "asoc: failed to init %s\n",
+                                        socdev->machine->dai_link[i].stream_name);
+                                continue;
+                        }
+                }
                 if (socdev->machine->dai_link[i].cpu_dai->type == SND_SOC_DAI_AC97)
                         ac97 = 1;
         }
@@ -1456,17 +1462,28 @@ int snd_soc_register_card(struct snd_soc_device *socdev)
         if (ret < 0) {
                 printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n",
                                 codec->name);
-                mutex_unlock(&codec->mutex);
-                return ret;
+                goto out;
         }
 
 #ifdef CONFIG_SND_SOC_AC97_BUS
-        if (ac97)
-                soc_ac97_dev_register(codec);
+        if (ac97) {
+                ret = soc_ac97_dev_register(codec);
+                if (ret < 0) {
+                        printk(KERN_ERR "asoc: AC97 device register failed\n");
+                        snd_card_free(codec->card);
+                        goto out;
+                }
+        }
 #endif
 
-        snd_soc_dapm_sys_add(socdev->dev);
-        device_create_file(socdev->dev, &dev_attr_codec_reg);
+        err = snd_soc_dapm_sys_add(socdev->dev);
+        if (err < 0)
+                printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n");
+
+        err = device_create_file(socdev->dev, &dev_attr_codec_reg);
+        if (err < 0)
+                printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n");
+out:
         mutex_unlock(&codec->mutex);
         return ret;
 }