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| author | Peter Hutterer <peter.hutterer@who-t.net> | 2014-09-16 10:44:40 +1000 |
|---|---|---|
| committer | Peter Hutterer <peter.hutterer@who-t.net> | 2014-09-16 10:59:04 +1000 |
| commit | 049611bd7f04e285909c55807478306cce83385f (patch) | |
| tree | 14f444efe32cf99b57b9d6c4243c461107a59441 /src/synaptics.c | |
| parent | afbbcfa10eb3a2295823720907f35bb59972dd82 (diff) | |
Prohibit negative or zero x/y resolutions
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>
Diffstat (limited to 'src/synaptics.c')
| -rw-r--r-- | src/synaptics.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/synaptics.c b/src/synaptics.c index 8e6022a..2e3ad0c 100644 --- a/src/synaptics.c +++ b/src/synaptics.c @@ -769,6 +769,16 @@ 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) { |