Hope I follow the right method to make the patch. If not, I'll retry. 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 <xpros64@xxxxxxxxxx> --- 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 }, Le 08/08/2018 à 10:46, Greg KH a écrit : > On Tue, Aug 07, 2018 at 09:05:03PM +0000, Maxence Duprès wrote: >> This is a proposed patch for KS49. >> >> The original patch for KS25: https://lore.kernel.org/patchwork/patch/753077/ >> >> About the authorship, I don't know what it is. My real name is Roux >> Laurent. >> >> >> diff -Naur 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 @@ >> { 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 }, >> > That's a good start, but can you take a look at > Documentation/SubmittingPatches for how to do this in a way that I can > apply it? Also look at lots of other patches on the mailing lists to > get an idea of the needed format. > > thanks, > > greg k-h ��.n��������+%������w��{.n�����{���)��jg��������ݢj����G�������j:+v���w�m������w�������h�����٥