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authorDmitry Osipenko <digetx@gmail.com>2021-03-27 01:19:27 +0300
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2021-03-28 07:41:09 +0300
commit781bab3238c21c8cc6d1999a6ee43de76252fdfd (patch)
tree5fc6edd804a8747875170c6ba1b0142ecbbfecec /drivers/input/touchscreen
parent69d5ff3e9e51e23d5d81bf48480aa5671be67a71 (diff)
downloadlinux-781bab3238c21c8cc6d1999a6ee43de76252fdfd.tar.xz
Input: elants_i2c - fix division by zero if firmware reports zero phys size
Touchscreen firmware of ASUS Transformer TF700T reports zeros for the phys size. Hence check whether the size is zero and don't set the resolution in this case. Reported-by: Jasper Korten <jja2000@gmail.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20210302100824.3423-1-digetx@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r--drivers/input/touchscreen/elants_i2c.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index 4c2b579f6c8b..78172c31529a 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -1441,7 +1441,7 @@ static int elants_i2c_probe(struct i2c_client *client,
touchscreen_parse_properties(ts->input, true, &ts->prop);
- if (ts->chip_id == EKTF3624) {
+ if (ts->chip_id == EKTF3624 && ts->phy_x && ts->phy_y) {
/* calculate resolution from size */
ts->x_res = DIV_ROUND_CLOSEST(ts->prop.max_x, ts->phy_x);
ts->y_res = DIV_ROUND_CLOSEST(ts->prop.max_y, ts->phy_y);