On some Logitech mice, such as the G903, and possibly the G403, the HID events are generated on a different interface to the HID++ one.

If we enable hi-res through the HID++ interface, the HID interface wouldn't know anything about it, and handle the events as if they were regular scroll events, making the mouse unusable.

Disable hi-res scrolling on those devices until we implement scroll events through HID++.

Signed-off-by: Bastien Nocera hadess@hadess.net Tested-by: Tobias Klausmann klausman@schwarzvogel.de Link: https://bugzilla.kernel.org/show_bug.cgi?id=216885 Fixes: 908d325e1665 ("HID: logitech-hidpp: Detect hi-res scrolling support") Cc: stable@vger.kernel.org --- drivers/hid/hid-logitech-hidpp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index abf2c95e4d0b..9c1ee8e91e0c 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -3978,7 +3978,8 @@ static void hidpp_connect_event(struct hidpp_device *hidpp) }

hidpp_initialize_battery(hidpp); - hidpp_initialize_hires_scroll(hidpp); + if (!hid_is_usb(hidpp->hid_dev)) + hidpp_initialize_hires_scroll(hidpp);

/* forward current battery state */ if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP10_BATTERY) {