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SubjectRe: [PATCH] Input: fix defuzzing logic
From
Hi

On Sun, Jul 20, 2014 at 1:49 AM, Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
> 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.

Reviewed-by: David Herrmann <dh.herrmann@gmail.com>

Thanks
David

> Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
> Reviewed-by: Benson Leung <bleung@chromium.org>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
> drivers/input/input.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/input/input.c b/drivers/input/input.c
> index 1c4c0db..29ca0bb 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);
>
> --
> Dmitry


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