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

From: Bard Liao yung-chuan.liao@linux.intel.com

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

Signed-off-by: Bard Liao yung-chuan.liao@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)