ALSA: lola - Implement polling_mode like hd-audio
Also protect the call of lola_update_rirb() with spinlock.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/lola/lola.c b/sound/pci/lola/lola.c
index 8ee22be..34b2428 100644
--- a/sound/pci/lola/lola.c
+++ b/sound/pci/lola/lola.c
@@ -153,8 +153,14 @@
{
unsigned long timeout;
+ again:
timeout = jiffies + msecs_to_jiffies(1000);
for (;;) {
+ if (chip->polling_mode) {
+ spin_lock_irq(&chip->reg_lock);
+ lola_update_rirb(chip);
+ spin_unlock_irq(&chip->reg_lock);
+ }
if (!chip->rirb.cmds) {
*val = chip->res;
if (extval)
@@ -175,9 +181,13 @@
break;
udelay(20);
cond_resched();
- lola_update_rirb(chip);
}
printk(KERN_WARNING SFX "RIRB response error\n");
+ if (!chip->polling_mode) {
+ printk(KERN_WARNING SFX "switching to polling mode\n");
+ chip->polling_mode = 1;
+ goto again;
+ }
return -EIO;
}
diff --git a/sound/pci/lola/lola.h b/sound/pci/lola/lola.h
index 400ab5e..d5708e2 100644
--- a/sound/pci/lola/lola.h
+++ b/sound/pci/lola/lola.h
@@ -374,8 +374,9 @@
unsigned int sample_rate_max;
/* flags */
- unsigned int initialized :1;
- unsigned int cold_reset :1;
+ unsigned int initialized:1;
+ unsigned int cold_reset:1;
+ unsigned int polling_mode:1;
/* for debugging */
unsigned int debug_res;