Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e96224ae authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
Browse files

[ALSA] hda-intel - Switch to polling mode for CORB/RIRB communication 



Automatically switch to polling mode for CORB/RIRB communication
if the irq-driven mode seems not working well.  If the polling
mode still doesn't work, switch to single_cmd mode as fallback.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 81d3dbde

sound/pci/hda/hda_intel.c

+17 −1
Original line number Diff line number Diff line
@@ -332,6 +332,7 @@ struct azx { 
	int position_fix;

	unsigned int initialized: 1;

	unsigned int single_cmd: 1;

	unsigned int polling_mode: 1;

};



/* driver types */
@@ -518,8 +519,23 @@ static unsigned int azx_rirb_get_response(struct hda_codec *codec) 
	struct azx *chip = codec->bus->private_data;

	int timeout = 50;



	while (chip->rirb.cmds) {

	for (;;) {

		if (chip->polling_mode) {

			spin_lock_irq(&chip->reg_lock);

			azx_update_rirb(chip);

			spin_unlock_irq(&chip->reg_lock);

		}

		if (! chip->rirb.cmds)

			break;

		if (! --timeout) {

			if (! chip->polling_mode) {

				snd_printk(KERN_WARNING "hda_intel: "

					   "azx_get_response timeout, "

					   "switching to polling mode...\n");

				chip->polling_mode = 1;

				timeout = 50;

				continue;

			}

			snd_printk(KERN_ERR

				   "hda_intel: azx_get_response timeout, "

				   "switching to single_cmd mode...\n");