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ASoC: SOF: Intel: hda: Clear RIRB status before reading WP 

Port commit 6d011d5057 ("ALSA: hda: Clear RIRB status before reading
WP") from legacy HDA driver to fix the get response timeout issue.
Current SOF driver does not suffer from this issue because sync write
is enabled in hda_init. The issue will come back if the sync write is
disabled for some reason.

Signed-off-by: Brent Lu <brent.lu@intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/1591959048-15813-1-git-send-email-brent.lu@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Brent Lu 2020-06-12 18:50:48 +08:00 committed by Mark Brown
parent e74a1e7eae
commit 40e2c46589
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GPG Key ID: 24D68B725D5487D0
1 changed files with 7 additions and 2 deletions
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9
sound/soc/sof/intel/hda-stream.c
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@ -653,11 +653,16 @@ irqreturn_t hda_dsp_stream_threaded_handler(int irq, void *context)
if (status & AZX_INT_CTRL_EN) {
rirb_status = snd_hdac_chip_readb(bus, RIRBSTS);
if (rirb_status & RIRB_INT_MASK) {
/*
* Clearing the interrupt status here ensures
* that no interrupt gets masked after the RIRB
* wp is read in snd_hdac_bus_update_rirb.
*/
snd_hdac_chip_writeb(bus, RIRBSTS,
RIRB_INT_MASK);
active = true;
if (rirb_status & RIRB_INT_RESPONSE)
snd_hdac_bus_update_rirb(bus);
snd_hdac_chip_writeb(bus, RIRBSTS,
RIRB_INT_MASK);
}
}
#endif