ALSA: hda: add polling mode in snd_hdac_bus_get_response

Polling mode is useful if a machine somehow missed an expected IRQ. Signed-off-by: Bard Liao <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
josf · May 28, 2019 · 5e13cf6 · 5e13cf6
1 parent 8af4213
commit 5e13cf6
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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)