On Thu, Sep 29, 2022 at 01:21, Eirin Nya <nyanpasu256@xxxxxxxxx> wrote:
> elantech_data::width is copied from elantech_device_info::width, and
> neither is mutated after initialization. So remove the redundant
> variable to prevent future bugs.
>
> Signed-off-by: Eirin Nya <nyanpasu256@xxxxxxxxx>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@xxxxxxxxxxxx>
ps: please consider using the proper subject line for input subsystem if
you need to send again.
It should be "Input: elantech - Remove redundant field elantech_data::width"
$ git log --oneline drivers/input/mouse/elantech.c shows:
1d72d9f960cc Input: elantech - fix stack out of bound access in elantech_change_report_id()
be896bd3b72b Input: elantench - fix misreporting trackpoint coordinates
9d383e96448d Input: elantech - Prepare a complete software node for the device
(this is a minor remark, so no need to send a v2 to just change the
subject line)
Cheers
Mattijs
> ---
> drivers/input/mouse/elantech.c | 4 +---
> drivers/input/mouse/elantech.h | 1 -
> 2 files changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
> index 79e31611fc..263779c031 100644
> --- a/drivers/input/mouse/elantech.c
> +++ b/drivers/input/mouse/elantech.c
> @@ -691,7 +691,7 @@ static void process_packet_head_v4(struct psmouse *psmouse)
> input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x);
> input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y);
> input_report_abs(dev, ABS_MT_PRESSURE, pres);
> - input_report_abs(dev, ABS_MT_TOUCH_MAJOR, traces * etd->width);
> + input_report_abs(dev, ABS_MT_TOUCH_MAJOR, traces * etd->info.width);
> /* report this for backwards compatibility */
> input_report_abs(dev, ABS_TOOL_WIDTH, traces);
>
> @@ -1253,8 +1253,6 @@ static int elantech_set_input_params(struct psmouse *psmouse)
> input_abs_set_res(dev, ABS_MT_POSITION_Y, info->y_res);
> }
>
> - etd->width = width;
> -
> return 0;
> }
>
> diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
> index 1ec004f72d..fb093134ea 100644
> --- a/drivers/input/mouse/elantech.h
> +++ b/drivers/input/mouse/elantech.h
> @@ -180,7 +180,6 @@ struct elantech_data {
> unsigned char reg_25;
> unsigned char reg_26;
> unsigned int single_finger_reports;
> - unsigned int width;
> struct finger_pos mt[ETP_MAX_FINGERS];
> unsigned char parity[256];
> struct elantech_device_info info;
> --
> 2.37.3
