On Fri, 17 Jan 2025, Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> wrote:
> Switch drm_dp_aux_dev.c to use new set of DPCD read / write helpers.
This might be one of the few places where the old functions and the old
return value was used in a sensible manner.
BR,
Jani.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
> drivers/gpu/drm/display/drm_dp_aux_dev.c | 12 +++++-------
> 1 file changed, 5 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/display/drm_dp_aux_dev.c b/drivers/gpu/drm/display/drm_dp_aux_dev.c
> index 29555b9f03c8c42681c17c4a01e74a966cf8611f..a31ab3f41efb71fd5f936c24ba5c3b8ebea68a5e 100644
> --- a/drivers/gpu/drm/display/drm_dp_aux_dev.c
> +++ b/drivers/gpu/drm/display/drm_dp_aux_dev.c
> @@ -163,17 +163,16 @@ static ssize_t auxdev_read_iter(struct kiocb *iocb, struct iov_iter *to)
> break;
> }
>
> - res = drm_dp_dpcd_read(aux_dev->aux, pos, buf, todo);
> -
> + res = drm_dp_dpcd_read_data(aux_dev->aux, pos, buf, todo);
> if (res <= 0)
> break;
>
> - if (copy_to_iter(buf, res, to) != res) {
> + if (copy_to_iter(buf, todo, to) != todo) {
> res = -EFAULT;
> break;
> }
>
> - pos += res;
> + pos += todo;
> }
>
> if (pos != iocb->ki_pos)
> @@ -211,12 +210,11 @@ static ssize_t auxdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
> break;
> }
>
> - res = drm_dp_dpcd_write(aux_dev->aux, pos, buf, todo);
> -
> + res = drm_dp_dpcd_write_data(aux_dev->aux, pos, buf, todo);
> if (res <= 0)
> break;
>
> - pos += res;
> + pos += todo;
> }
>
> if (pos != iocb->ki_pos)
--
Jani Nikula, Intel
