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| author | Dmitry Torokhov <dtor@chromium.org> | 2014-07-19 16:30:31 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-07-20 13:17:42 -0700 |
| commit | 50c5d36dab930b1f1b1e3348b8608aa8b9ee7610 (patch) | |
| tree | adbc15400bc011ffc9ed4a716096bc3c02f73cf6 /drivers | |
| parent | 67f4aef20055afec73e37e7752bc6cc74fa01dea (diff) | |
| download | linux-50c5d36dab930b1f1b1e3348b8608aa8b9ee7610.tar.bz2 | |
Input: fix defuzzing logic
We attempt to remove noise from coordinates reported by devices in
input_handle_abs_event(), unfortunately, unless we were dropping the
event altogether, we were ignoring the adjusted value and were passing
on the original value instead.
Cc: stable@vger.kernel.org
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/input.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 1c4c0db05550..29ca0bb4f561 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -257,9 +257,10 @@ static int input_handle_abs_event(struct input_dev *dev, } static int input_get_disposition(struct input_dev *dev, - unsigned int type, unsigned int code, int value) + unsigned int type, unsigned int code, int *pval) { int disposition = INPUT_IGNORE_EVENT; + int value = *pval; switch (type) { @@ -357,6 +358,7 @@ static int input_get_disposition(struct input_dev *dev, break; } + *pval = value; return disposition; } @@ -365,7 +367,7 @@ static void input_handle_event(struct input_dev *dev, { int disposition; - disposition = input_get_disposition(dev, type, code, value); + disposition = input_get_disposition(dev, type, code, &value); if ((disposition & INPUT_PASS_TO_DEVICE) && dev->event) dev->event(dev, type, code, value); |