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ALSA: hda - Add a warning if pending IRQ is found

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The pending IRQ handling is a very hackish workaround and should be
avoided as much as possible via a larger bdl_pos_adj option value.
Put a warning message if this situation occurs so that the user may have
a chance to notice that something is wrong.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai 2008-06-10 17:53:35 +02:00 committed by Jaroslav Kysela
parent 8c53b96f22
commit a6a950a8a8
1 changed files with 9 additions and 0 deletions
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9
sound/pci/hda/hda_intel.c
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@ -374,6 +374,7 @@ struct azx {
unsigned int single_cmd :1;
unsigned int polling_mode :1;
unsigned int msi :1;
unsigned int irq_pending_warned :1;
/* for debugging */
unsigned int last_cmd; /* last issued command (to sync) */
@ -1562,6 +1563,14 @@ static void azx_irq_pending_work(struct work_struct *work)
struct azx *chip = container_of(work, struct azx, irq_pending_work);
int i, pending;
if (!chip->irq_pending_warned) {
printk(KERN_WARNING
"hda-intel: IRQ timing workaround is activated "
"for card #%d. Suggest a bigger bdl_pos_adj.\n",
chip->card->number);
chip->irq_pending_warned = 1;
}
for (;;) {
pending = 0;
spin_lock_irq(&chip->reg_lock);