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Rodrigo Lugathe da Conceição Alvesgregkh
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USB: core: add USB_QUIRK_NO_LPM for VIA Labs USB 2.0 hub
commit bd728c3 upstream. 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 <lugathe2@gmail.com> Cc: stable <stable@kernel.org> Link: https://patch.msgid.link/20260603113626.395612-1-lugathe2@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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drivers/usb/core/quirks.c

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@@ -574,6 +574,9 @@ static const struct usb_device_id usb_quirk_list[] = {
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/* VLI disk */
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{ USB_DEVICE(0x2109, 0x0711), .driver_info = USB_QUIRK_NO_LPM },
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/* VIA Labs, Inc. USB2.0 Hub */
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{ USB_DEVICE(0x2109, 0x2817), .driver_info = USB_QUIRK_NO_LPM },
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/* Raydium Touchscreen */
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{ USB_DEVICE(0x2386, 0x3114), .driver_info = USB_QUIRK_NO_LPM },
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