4.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Hans de Goede <[email protected]> commit 088df2ccef75754cc16a6ba31829d23bcb2b68ed upstream. On some v7 devices (e.g. Lenovo-E550) the deltas reported are typically only in the 0-1 range dividing this by 2 results in a range of 0-0. And even for v7 devices where this does not lead to making the trackstick entirely unusable, it makes it twice as slow as before we added v7 support and were using the ps/2 mouse emulation of the dual point setup. If some kind of generic slowdown is actually necessary for some devices, then that belongs in userspace, not in the kernel. Reported-and-tested-by: Rico Moorman <[email protected]> Signed-off-by: Hans de Goede <[email protected]> Reviewed-by: Benjamin Tissoires <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/input/mouse/alps.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -1042,9 +1042,8 @@ static void alps_process_trackstick_pack right = (packet[1] & 0x02) >> 1; middle = (packet[1] & 0x04) >> 2; - /* Divide 2 since trackpoint's speed is too fast */ - input_report_rel(dev2, REL_X, (char)x / 2); - input_report_rel(dev2, REL_Y, -((char)y / 2)); + input_report_rel(dev2, REL_X, (char)x); + input_report_rel(dev2, REL_Y, -((char)y)); input_report_key(dev2, BTN_LEFT, left); input_report_key(dev2, BTN_RIGHT, right); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
