From: Rodrigo Lugathe da Conceição Alves Date: Wed, 3 Jun 2026 11:36:26 +0000 (-0300) Subject: USB: core: add USB_QUIRK_NO_LPM for VIA Labs USB 2.0 hub X-Git-Tag: v7.2-rc3~5^2~48 X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=bd728c3d9b1cc0bb0fda6a7055c5c8b55d7477b2;p=thirdparty%2Fkernel%2Flinux.git USB: core: add USB_QUIRK_NO_LPM for VIA Labs USB 2.0 hub The VIA Labs, Inc. USB 2.0 hub controller (2109:2817), found in a KVM switch, fails to enumerate high-power devices during cold boot and system restart. Applying the kernel parameter usbcore.quirks=2109:2817:k resolves the issue. Enumeration failure log: usb 1-1.2.3: device descriptor read/64, error -32 usb 1-1.2.3: Device not responding to setup address. usb 1-1.2.3: device not accepting address 11, error -71 usb 1-1.2-port3: unable to enumerate USB device Add USB_QUIRK_NO_LPM for this device. Signed-off-by: Rodrigo Lugathe da Conceição Alves Cc: stable Link: https://patch.msgid.link/20260603113626.395612-1-lugathe2@gmail.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 80b61a799e8b..87ee2d938bc0 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -579,6 +579,9 @@ static const struct usb_device_id usb_quirk_list[] = { /* VLI disk */ { USB_DEVICE(0x2109, 0x0711), .driver_info = USB_QUIRK_NO_LPM }, + /* VIA Labs, Inc. USB2.0 Hub */ + { USB_DEVICE(0x2109, 0x2817), .driver_info = USB_QUIRK_NO_LPM }, + /* Raydium Touchscreen */ { USB_DEVICE(0x2386, 0x3114), .driver_info = USB_QUIRK_NO_LPM },