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ALSA: hda: add polling mode in snd_hdac_bus_get_response
author
Bard Liao
<yung-chuan.liao@linux.intel.com>
Sun, 26 May 2019 16:58:35 +0000
(
00:58
+0800)
committer
Takashi Iwai
<tiwai@suse.de>
Tue, 28 May 2019 05:52:02 +0000
(07:52 +0200)
Polling mode is useful if a machine somehow missed an expected IRQ.
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/hda/hdac_controller.c
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diff --git
a/sound/hda/hdac_controller.c
b/sound/hda/hdac_controller.c
index
b2e9454
..
a16ac31
100644
(file)
--- a/
sound/hda/hdac_controller.c
+++ b/
sound/hda/hdac_controller.c
@@
-239,6
+239,8
@@
int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
timeout = jiffies + msecs_to_jiffies(1000);
for (loopcounter = 0;; loopcounter++) {
+ if (bus->polling_mode)
+ snd_hdac_bus_update_rirb(bus);
spin_lock_irq(&bus->reg_lock);
if (!bus->rirb.cmds[addr]) {
if (res)