ACK: [SRU] [Bionic] [PATCH 1/1] USB: quirks: Add no-lpm quirk for Raydium touchscreens

[Anthony Wong]

On Thu, Nov 08, 2018 at 07:48:48AM +0000, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1802248
> 
> 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 at canonical.com>
> Cc: stable <stable at vger.kernel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> (backported from commit deefd24228a172d1b27d4a9adbfd2cdacd60ae64 linux-next)
> Signed-off-by: Kai-Heng Feng <kai.heng.feng at canonical.com>
> ---
>  drivers/usb/core/quirks.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
> index 7909262a715d..51f962d5a113 100644
> --- a/drivers/usb/core/quirks.c
> +++ b/drivers/usb/core/quirks.c
> @@ -403,6 +403,11 @@ static const struct usb_device_id usb_quirk_list[] = {
>  	{ 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 },
> +
>  	/* INTEL VALUE SSD */
>  	{ USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
>  
> -- 
> 2.17.1

Acked-by: Anthony Wong <anthony.wong at canonical.com>