Commit 5e13cf6c authored by Bard Liao's avatar Bard Liao Committed by Takashi Iwai
Browse files

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: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 8af42130

sound/hda/hdac_controller.c

+2 −0
Original line number Diff line number Diff line
@@ -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)

CRA Git | Maintained and supported by SUSTech CRA and CCSE