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]>

diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c
index b2e9454f5816a042c8218e0d76b770277e6eeedb..a16ac31bda835474bc9654d3cc02acb0a57ee291 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)