Mohan Kumar 60bc60dd7f ALSA: hda: Clear RIRB status before reading WP
[ Upstream commit 6d011d5057ff88ee556c000ac6fe0be23bdfcd72 ]

RIRB interrupt status getting cleared after the write pointer is read
causes a race condition, where last response(s) into RIRB may remain
unserviced by IRQ, eventually causing azx_rirb_get_response to fall
back to polling mode. Clearing the RIRB interrupt status ahead of
write pointer access ensures that this condition is avoided.

Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Signed-off-by: Viswanath L <viswanathl@nvidia.com>
Link: https://lore.kernel.org/r/1580983853-351-1-git-send-email-viswanathl@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 20:40:06 +02:00
..
2020-07-22 09:10:46 +02:00
2016-10-07 20:19:31 -07:00
2016-01-20 09:59:27 +01:00
2019-08-25 10:51:18 +02:00