Commit 3f39d58a authored Jul 24, 2023 by Łukasz Bartosik Committed by Greg Kroah-Hartman Aug 11, 2023

USB: quirks: add quirk for Focusrite Scarlett



commit 9dc162e22387080e2d06de708b89920c0e158c9a upstream.

The Focusrite Scarlett audio device does not behave correctly during
resumes. Below is what happens during every resume (captured with
Beagle 5000):

<Suspend>
<Resume>
<Reset>/<Chirp J>/<Tiny J>
<Reset/Target disconnected>
<High Speed>

The Scarlett disconnects and is enumerated again.

However from time to time it drops completely off the USB bus during
resume. Below is captured occurrence of such an event:

<Suspend>
<Resume>
<Reset>/<Chirp J>/<Tiny J>
<Reset>/<Chirp K>/<Tiny K>
<High Speed>
<Corrupted packet>
<Reset/Target disconnected>

To fix the condition a user has to unplug and plug the device again.

With USB_QUIRK_RESET_RESUME applied ("usbcore.quirks=1235:8211:b")
for the Scarlett audio device the issue still reproduces.

Applying USB_QUIRK_DISCONNECT_SUSPEND ("usbcore.quirks=1235:8211:m")
fixed the issue and the Scarlett audio device didn't drop off the USB
bus for ~5000 suspend/resume cycles where originally issue reproduced in
~100 or less suspend/resume cycles.

Signed-off-by: Łukasz Bartosik <lb@semihalf.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20230724112911.1802577-1-lb@semihalf.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 8f86b1b3

drivers/usb/core/quirks.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -437,6 +437,10 @@ static const struct usb_device_id usb_quirk_list[] = {
		/* novation SoundControl XL */
		{ USB_DEVICE(0x1235, 0x0061), .driver_info = USB_QUIRK_RESET_RESUME },

		/* Focusrite Scarlett Solo USB */
		{ USB_DEVICE(0x1235, 0x8211), .driver_info =
		USB_QUIRK_DISCONNECT_SUSPEND },

		/* Huawei 4G LTE module */
		{ USB_DEVICE(0x12d1, 0x15bb), .driver_info =
		USB_QUIRK_DISCONNECT_SUSPEND },