diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2021-03-26 15:19:27 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-03-27 21:41:09 -0700 |
| commit | 781bab3238c21c8cc6d1999a6ee43de76252fdfd (patch) | |
| tree | 5fc6edd804a8747875170c6ba1b0142ecbbfecec /drivers | |
| parent | 69d5ff3e9e51e23d5d81bf48480aa5671be67a71 (diff) | |
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')
| -rw-r--r-- | drivers/input/touchscreen/elants_i2c.c | 2 |
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); |