ALSA: hda - Fix misc workqueue issues

Some fixes regarding snd-hda-intel workqueue:
- Use create_singlethread_workqueue() instead of create_workqueue()
  as per-CPU work isn't required.
- Allocate workq name string properly
- Renamed the workq name to "hd-audio*" to be more obvious.

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

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index b7bba7d..0b70813 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -487,7 +487,6 @@ int /*__devinit*/ snd_hda_bus_new(struct snd_card *card,
 {
        struct hda_bus *bus;
        int err;
-       char qname[8];
        static struct snd_device_ops dev_ops = {
                .dev_register = snd_hda_bus_dev_register,
                .dev_free = snd_hda_bus_dev_free,
@@ -517,10 +516,12 @@ int /*__devinit*/ snd_hda_bus_new(struct snd_card *card,
        mutex_init(&bus->cmd_mutex);
        INIT_LIST_HEAD(&bus->codec_list);
 
-       snprintf(qname, sizeof(qname), "hda%d", card->number);
-       bus->workq = create_workqueue(qname);
+       snprintf(bus->workq_name, sizeof(bus->workq_name),
+                "hd-audio%d", card->number);
+       bus->workq = create_singlethread_workqueue(bus->workq_name);
        if (!bus->workq) {
-               snd_printk(KERN_ERR "cannot create workqueue %s\n", qname);
+               snd_printk(KERN_ERR "cannot create workqueue %s\n",
+                          bus->workq_name);
                kfree(bus);
                return -ENOMEM;
        }

diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 5810ef5..09a332a 100644 (file)
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -614,6 +614,7 @@ struct hda_bus {
 
        /* unsolicited event queue */
        struct hda_bus_unsolicited *unsol;
+       char workq_name[16];
        struct workqueue_struct *workq; /* common workqueue for codecs */
 
        /* assigned PCMs */