BOSS RC-505 (shown by lsusb as "Roland Corp. RC-505") does require the same quirk as these other BOSS devices.

Without this quirk it is neither possible to capture audio from nor to write audio to the RC-505. Both just result in an empty audio stream. With these changes both capture and playback seem to work quite fine. MIDI funtionality was not tested.

Tested-by: Harry Reinold harry.reinold@posteo.de Signed-off-by: Timon Reinold tirei@agon.one ---

We found the hint to enable the same quirk as reqired by the BOSS Katana for the RC-505 in this post: https://old.reddit.com/r/linuxaudio/comments/fom7z4/roland_rc505_usb_audio_i... But none of the code posted there was used (since that predates implicit.c), so I think that shouldn't create any copyright problems.

We're currently running the older version of this patch (without implicit.c) on Linux Mint and it seems quite stable so far. We did also test this version of the patch and that seems to work fine, too.

Yours sincerely, Timon Reinold

sound/usb/implicit.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/sound/usb/implicit.c b/sound/usb/implicit.c index 70b9777b2e63..2d7f747c0237 100644 --- a/sound/usb/implicit.c +++ b/sound/usb/implicit.c @@ -79,6 +79,7 @@ static const struct snd_usb_implicit_fb_match playback_implicit_fb_quirks[] = { IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d8), /* BOSS Katana */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x01e5), /* BOSS GT-001 */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0203), /* BOSS AD-10 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0171), /* BOSS RC-505 */

{} /* terminator */ }; @@ -91,6 +92,7 @@ static const struct snd_usb_implicit_fb_match capture_implicit_fb_quirks[] = { IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d8, 0x0d, 0x01), /* BOSS Katana */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x01e5, 0x0d, 0x01), /* BOSS GT-001 */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0203, 0x0d, 0x01), /* BOSS AD-10 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0171, 0x0d, 0x01), /* BOSS RC-505 */

{} /* terminator */ };