WORLDE Controller KS49 or Prodipe MIDI 49C USB controller cause a -EPROTO error, a communication restart and loop again.
This issue has already been fixed for KS25. https://lore.kernel.org/patchwork/patch/753077/ I just add device 201 for KS49 in quirks.c to get it works. This is the patch I propose. Signed-off-by: Laurent Roux <xpro...@hotmail.fr> --- drivers/usb/core/quirks.c | 1 ------ 1 file changed(-) diff -up 1/drivers/usb/core/quirks.c 2/drivers/usb/core/quirks.c --- 1/drivers/usb/core/quirks.c 2018-08-06 16:18:22.000000000 +0200 +++ 2/drivers/usb/core/quirks.c 2018-08-07 22:22:03.868499000 +0200 @@ -182,6 +182,10 @@ static const struct usb_device_id usb_qu { USB_DEVICE(0x0218, 0x0401), .driver_info = USB_QUIRK_CONFIG_INTF_STRINGS }, + /* WORLDE Controller KS49 or Prodipe MIDI 49C USB controller */ + { USB_DEVICE(0x0218, 0x0201), .driver_info = + USB_QUIRK_CONFIG_INTF_STRINGS }, + /* HP 5300/5370C scanner */ { USB_DEVICE(0x03f0, 0x0701), .driver_info = USB_QUIRK_STRING_FETCH_255 },
