Commit 8b7a42ec authored by JP Hein's avatar JP Hein Committed by Greg Kroah-Hartman
Browse files

USB: core: add NO_LPM quirk for Razer Kiyo Pro webcam 

The Razer Kiyo Pro (1532:0e05) is a USB 3.0 UVC webcam whose firmware
does not handle USB Link Power Management transitions reliably. When LPM
is active, the device can enter a state where it fails to respond to
control transfers, producing EPIPE (-32) errors on UVC probe control
SET_CUR requests. In the worst case, the stalled endpoint triggers an
xHCI stop-endpoint command that times out, causing the host controller
to be declared dead and every USB device on the bus to be disconnected.

This has been reported as Ubuntu Launchpad Bug #2061177. The failure
mode is:

  1. UVC probe control SET_CUR returns -32 (EPIPE)
  2. xHCI host not responding to stop endpoint command
  3. xHCI host controller not responding, assume dead
  4. All USB devices on the affected xHCI controller disconnect

Disabling LPM prevents the firmware from entering the problematic low-
power states that precede the stall. This is the same approach used for
other webcams with similar firmware issues (e.g., Logitech HD Webcam C270).

Cc: stable <stable@kernel.org>
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2061177


Signed-off-by: default avatarJP Hein <jp@jphein.com>
Link: https://patch.msgid.link/20260331003806.212565-2-jp@jphein.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7f6f127b

drivers/usb/core/quirks.c

+2 −0
Original line number Diff line number Diff line
@@ -493,6 +493,8 @@ static const struct usb_device_id usb_quirk_list[] = { 
	/* Razer - Razer Blade Keyboard */

	{ USB_DEVICE(0x1532, 0x0116), .driver_info =

			USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },

	/* Razer - Razer Kiyo Pro Webcam */

	{ USB_DEVICE(0x1532, 0x0e05), .driver_info = USB_QUIRK_NO_LPM },



	/* Lenovo ThinkPad OneLink+ Dock twin hub controllers (VIA Labs VL812) */

	{ USB_DEVICE(0x17ef, 0x1018), .driver_info = USB_QUIRK_RESET_RESUME },