patch "USB: quirks: Add no-lpm quirk for Raydium touchscreens" added to usb-linus

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 my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From: Kai-Heng Feng <[email protected]>
Date: Fri, 26 Oct 2018 13:33:15 +0800
Subject: USB: quirks: Add no-lpm quirk for Raydium touchscreens

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

---
 drivers/usb/core/quirks.c | 5 +++++
 1 file changed, 5 insertions(+)

index 64df444af229..f9ff03e6af93 100644
@@ -420,6 +420,11 @@ 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 },
+
 	/* DJI CineSSD */
 	{ USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM },
 

2.19.1