Input: synaptics - fix resolution for manually provided min/max

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commit d49cb7aeeb upstream.

commit 421e08c41f fixed the reported min/max for the X and Y axis,
but unfortunately, it broke the resolution of those same axis.

On the t540p, the resolution is the same regarding X and Y. It is not
a problem for xf86-input-synaptics because this driver is only interested
in the ratio between X and Y.
Unfortunately, xf86-input-cmt uses directly the resolution, and having a
null resolution leads to some divide by 0 errors, which are translated by
-infinity in the resulting coordinates.

Reported-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Benjamin Tissoires 2014-06-07 22:37:47 -07:00 • committed by Greg Kroah-Hartman

parent abd948c8bf

commit 4470cf9ba2

1 changed files with 10 additions and 9 deletions

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19

drivers/input/mouse/synaptics.c

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