[ALSA] Add error messages

Add error messages in the critial error path to be more verbose.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 1 deletions

diff --git a/sound/core/device.c b/sound/core/device.c
index afa8cc7fb05..b1cf6ec5678 100644
--- a/sound/core/device.c
+++ b/sound/core/device.c
@@ -50,8 +50,10 @@ int snd_device_new(struct snd_card *card, snd_device_type_t type,
         snd_assert(device_data != NULL, return -ENXIO);
         snd_assert(ops != NULL, return -ENXIO);
         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-        if (dev == NULL)
+        if (dev == NULL) {
+                snd_printk(KERN_ERR "Cannot allocate device\n");
                 return -ENOMEM;
+        }
         dev->card = card;
         dev->type = type;
         dev->state = SNDRV_DEV_BUILD;
@@ -173,6 +175,7 @@ int snd_device_register(struct snd_card *card, void *device_data)
                         dev->state = SNDRV_DEV_REGISTERED;
                         return 0;
                 }
+                snd_printd("snd_device_register busy\n");
                 return -EBUSY;
         }
         snd_BUG();