Commit 960a1149 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: usb-audio: Add midi2_ump_probe option 

Add a new option to enable/disable the UMP Endpoint probing.
Some firmware seems screwed up when such a new command issued, and
this option allows user to suppress it.

Link: https://lore.kernel.org/r/20230612081054.17200-5-tiwai@suse.de


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 54852e8f

sound/usb/midi2.c

+10 −4
Original line number Diff line number Diff line
@@ -27,6 +27,10 @@ static bool midi2_enable = true; 
module_param(midi2_enable, bool, 0444);

MODULE_PARM_DESC(midi2_enable, "Enable MIDI 2.0 support.");



static bool midi2_ump_probe = true;

module_param(midi2_ump_probe, bool, 0444);

MODULE_PARM_DESC(midi2_ump_probe, "Probe UMP v1.1 support at first.");



/* stream direction; just shorter names */

enum {

	STR_OUT = SNDRV_RAWMIDI_STREAM_OUTPUT,
@@ -1136,11 +1140,13 @@ int snd_usb_midi_v2_create(struct snd_usb_audio *chip, 
		goto error;

	}



	if (midi2_ump_probe) {

		err = parse_ump_endpoints(umidi);

		if (err < 0) {

			usb_audio_err(chip, "Failed to parse UMP endpoint\n");

			goto error;

		}

	}



	err = create_blocks_from_gtb(umidi);

	if (err < 0) {