[alsa-devel] [PATCH 4/5] ALSA: hda: add polling mode in snd_hdac_bus_get_response

[Bard liao]

From: Bard Liao <yung-chuan.liao at linux.intel.com>

Polling mode is useful if a machine somehow missed an expected IRQ.

Signed-off-by: Bard Liao <yung-chuan.liao at linux.intel.com>
---
 sound/hda/hdac_controller.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c
index b2e9454f5816..a16ac31bda83 100644
--- 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)
-- 
2.17.1