This is a note to let you know that I've just added the patch titled USB: quirks: Add no-lpm quirk for Raydium touchscreens to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-quirks-add-no-lpm-quirk-for-raydium-touchscreens.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From deefd24228a172d1b27d4a9adbfd2cdacd60ae64 Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Date: Fri, 26 Oct 2018 13:33:15 +0800 Subject: USB: quirks: Add no-lpm quirk for Raydium touchscreens From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> commit deefd24228a172d1b27d4a9adbfd2cdacd60ae64 upstream. Raydium USB touchscreen fails to set config if LPM is enabled: [ 2.030658] usb 1-8: New USB device found, idVendor=2386, idProduct=3119 [ 2.030659] usb 1-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 2.030660] usb 1-8: Product: Raydium Touch System [ 2.030661] usb 1-8: Manufacturer: Raydium Corporation [ 7.132209] usb 1-8: can't set config #1, error -110 Same behavior can be observed on 2386:3114. Raydium claims the touchscreen supports LPM under Windows, so I used Microsoft USB Test Tools (MUTT) [1] to check its LPM status. MUTT shows that the LPM doesn't work under Windows, either. So let's just disable LPM for Raydium touchscreens. [1] https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/usb-test-tools Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Cc: stable <stable@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/core/quirks.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -249,6 +249,11 @@ static const struct usb_device_id usb_qu { USB_DEVICE(0x2040, 0x7200), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, + /* Raydium Touchscreen */ + { USB_DEVICE(0x2386, 0x3114), .driver_info = USB_QUIRK_NO_LPM }, + + { USB_DEVICE(0x2386, 0x3119), .driver_info = USB_QUIRK_NO_LPM }, + /* DJI CineSSD */ { USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM }, Patches currently in stable-queue which might be from kai.heng.feng@xxxxxxxxxxxxx are queue-3.18/usb-quirks-add-no-lpm-quirk-for-raydium-touchscreens.patch