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| author |   Jason Gerecke <killertofu@gmail.com> | 2012-03-12 22:15:43 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-12 22:19:14 -0700 |
| commit | 24e3e5ae1e4c2a3a32f5b1f96b4e3fd721806acd (patch) | |
| tree | fe7d980253335a2e21a3983be97c79133a9ebbee /drivers/input/tablet | |
| parent | Input: twl4030-vibra - really switch from #if to #ifdef (diff) | |
| download | linux-dev-24e3e5ae1e4c2a3a32f5b1f96b4e3fd721806acd.tar.xz linux-dev-24e3e5ae1e4c2a3a32f5b1f96b4e3fd721806acd.zip | |
Input: wacom - fix physical size calculation for 3rd-gen Bamboo
This calculation determines the physical dimensions of the tablet,
used later on in calculate_touch_res to obtain the touch sensor
resolution.
Instead of dividing the logical size by the resolution, the current
code performs a multiplication. This doesn't pose a problem for the
3rd-gen Bamboo since the resolution and scale factor happen to be
identical, but will produce an incorrect result for other cases.
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Reviewed-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/tablet')
| -rw-r--r-- | drivers/input/tablet/wacom_sys.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 7e63183a6c68..b59058998417 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -184,9 +184,9 @@ static int wacom_parse_logical_collection(unsigned char *report, * data before its overwritten. */ features->x_phy = - (features->x_max * features->x_resolution) / 100; + (features->x_max * 100) / features->x_resolution; features->y_phy = - (features->y_max * features->y_resolution) / 100; + (features->y_max * 100) / features->y_resolution; features->x_max = features->y_max = get_unaligned_le16(&report[10]); |