XLibre/xf86-input-synaptics
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Prohibit negative or zero x/y resolutions

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Default resolution is 1, don't allow setting 0 to avoid divisions by 0 or
just general weirdness.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 049611bd7f)
This commit is contained in:
Peter Hutterer
2014-09-16 10:44:40 +10:00
parent ffd51448fb
commit c3df19df67
1 changed files with 10 additions and 0 deletions
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10
src/synaptics.c
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@@ -745,6 +745,16 @@ set_default_parameters(InputInfoPtr pInfo)
xf86SetIntOption(opts, "HorizResolution", horizResolution);
pars->resolution_vert =
xf86SetIntOption(opts, "VertResolution", vertResolution);
if (pars->resolution_horiz <= 0) {
xf86IDrvMsg(pInfo, X_ERROR,
"Invalid X resolution, using 1 instead.\n");
pars->resolution_horiz = 1;
}
if (pars->resolution_vert <= 0) {
xf86IDrvMsg(pInfo, X_ERROR,
"Invalid Y resolution, using 1 instead.\n");
pars->resolution_vert = 1;
}
/* Warn about (and fix) incorrectly configured TopEdge/BottomEdge parameters */
if (pars->top_edge > pars->bottom_edge) {