diff options
| author | Takashi Iwai <tiwai@suse.de> | 2011-05-03 17:06:53 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-05-03 17:06:53 +0200 |
| commit | fe4af1b55ed76e3051bbd8abce7d6b3c504272a5 (patch) | |
| tree | 2ca1533564dd46d12562fb54f8abf650cd041408 | |
| parent | 2db3002029d6c8fbd8ad4ab21f501475cd8c96f9 (diff) | |
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>
| -rw-r--r-- | sound/pci/lola/lola.c | 12 | ||||
| -rw-r--r-- | sound/pci/lola/lola.h | 5 |
2 files changed, 14 insertions, 3 deletions
diff --git a/sound/pci/lola/lola.c b/sound/pci/lola/lola.c index 8ee22bee10c9..34b24286d279 100644 --- a/sound/pci/lola/lola.c +++ b/sound/pci/lola/lola.c @@ -153,8 +153,14 @@ static int rirb_get_response(struct lola *chip, unsigned int *val, { 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 @@ static int rirb_get_response(struct lola *chip, unsigned int *val, 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 400ab5ef4c6c..d5708e29b16d 100644 --- a/sound/pci/lola/lola.h +++ b/sound/pci/lola/lola.h @@ -374,8 +374,9 @@ struct lola { 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; |