HID: round return value of hidinput_calc_abs_res
authorBenjamin Tissoires <benjamin.tissoires@gmail.com>
Wed, 14 Nov 2012 15:59:14 +0000 (16:59 +0100)
committerJiri Kosina <jkosina@suse.cz>
Thu, 15 Nov 2012 09:06:56 +0000 (10:06 +0100)
commitccdd699411b77c463022ebac311eb4a06ca56db4
tree3103c884cc1f4f89969c5889485e032742f40c3e
parent37cf6e6fc34e2fca4e7c565697e7cd5c317bc316
HID: round return value of hidinput_calc_abs_res

hidinput_calc_abs_res should return the closest int in the division
instead of the floor.
On a device with a logical_max of 3008 and a physical_max of 255mm,
previous implementation gave a resolution of 11 instead of 12.
With 11, user-space computes a physical size of 273.5mm and the
round_closest results gives 250.6mm.
The old implementation introduced an error of 2cm in this example.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
drivers/hid/hid-input.c