[fprint] uru4000, number of enroll stages

[Martin Hejnfelt]

On Wed, 2014-06-25 at 09:06 +0300, Timo Teras wrote:
> It did. Thanks. Forget the earlier patch, it's irrelevant and the
> original code is right. Seems the bug is in the generic code and
> affects all drivers that are capable of 'finger present' detection.
> 
> It seems to be a bug since 2008 but mostly unnoticed due to doing only
> that one enrollment.
> 
> The following should fix it:
> 
> diff --git a/libfprint/imgdev.c b/libfprint/imgdev.c
> index f960ee3..3b5d3f3 100644
> --- a/libfprint/imgdev.c
> +++ b/libfprint/imgdev.c
> @@ -159,7 +159,7 @@ void fpi_imgdev_report_finger_status(struct fp_img_dev *imgdev,
>                     r > 0 && r != FP_ENROLL_COMPLETE && r != FP_ENROLL_FAIL) {
>                         imgdev->action_result = 0;
>                         imgdev->action_state = IMG_ACQUIRE_STATE_AWAIT_FINGER_ON;
> -                       dev_change_state(imgdev, IMG_ACQUIRE_STATE_AWAIT_FINGER_ON);
> +                       dev_change_state(imgdev, IMGDEV_STATE_AWAIT_FINGER_ON);
>                 }
>                 break;
>         case IMG_ACTION_VERIFY:

This fixes it perfectly! I can vouch for this change, at least it works
both with my U.are.u 4500 (using uru4000) and my upek touchstrip (using
upekts_img) readers... Thanks a lot!

Kind regards,
Martin Hejnfelt