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ALSA: hda - Reset CORB/RIRB at retrying the verb communication

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When a codec communication error occurs, the CORB/RIRB counters should
be reset first before re-issuing the verb.  Simply call azx_free_cmd_io()
and azx_init_cmd_io() to achieve that.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-05-25 18:34:52 +02:00
parent fa79796631
commit 4fcd39207f
1 changed files with 4 additions and 2 deletions
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6
sound/pci/hda/hda_intel.c
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@ -522,6 +522,7 @@ static void azx_init_cmd_io(struct azx *chip)
/* RIRB set up */
chip->rirb.addr = chip->rb.addr + 2048;
chip->rirb.buf = (u32 *)(chip->rb.area + 2048);
chip->rirb.wp = chip->rirb.rp = chip->rirb.cmds = 0;
azx_writel(chip, RIRBLBASE, (u32)chip->rirb.addr);
azx_writel(chip, RIRBUBASE, upper_32_bits(chip->rirb.addr));
@ -533,7 +534,6 @@ static void azx_init_cmd_io(struct azx *chip)
azx_writew(chip, RINTCNT, 1);
/* enable rirb dma and response irq */
azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN);
chip->rirb.rp = chip->rirb.cmds = 0;
}
static void azx_free_cmd_io(struct azx *chip)
@ -654,9 +654,11 @@ static unsigned int azx_rirb_get_response(struct hda_bus *bus)
snd_printk(KERN_ERR SFX "azx_get_response timeout (ERROR): "
"last cmd=0x%08x\n", chip->last_cmd);
/* re-initialize CORB/RIRB */
spin_lock_irq(&chip->reg_lock);
chip->rirb.cmds = 0; /* reset the index */
bus->rirb_error = 1;
azx_free_cmd_io(chip);
azx_init_cmd_io(chip);
spin_unlock_irq(&chip->reg_lock);
return -1;
}