On Tue, Jun 04, 2024 at 03:40:44PM -0400, Mark Pearson wrote:
> On systems where the UCSI PDOs are not supported, the UCSI driver is
> giving an error message. This can cause users to believe there is a HW
> issue with their system when in fact it is working as designed.
>
> Downgrade message to dev_info for EOPNOTSUPP condition.
>
> Tested on Lenovo L14 G5 AMD and confirmed with Lenovo FW team that PDOs
> are not supported on this platform.
>
> Signed-off-by: Mark Pearson <mpearson-lenovo@xxxxxxxxx>
> ---
> drivers/usb/typec/ucsi/ucsi.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
> index cb52e7b0a2c5..090be87d5485 100644
> --- a/drivers/usb/typec/ucsi/ucsi.c
> +++ b/drivers/usb/typec/ucsi/ucsi.c
> @@ -632,8 +632,12 @@ static int ucsi_read_pdos(struct ucsi_connector *con,
> command |= is_source(role) ? UCSI_GET_PDOS_SRC_PDOS : 0;
> ret = ucsi_send_command(ucsi, command, pdos + offset,
> num_pdos * sizeof(u32));
> - if (ret < 0 && ret != -ETIMEDOUT)
> - dev_err(ucsi->dev, "UCSI_GET_PDOS failed (%d)\n", ret);
> + if (ret < 0 && ret != -ETIMEDOUT) {
> + if (ret == -EOPNOTSUPP)
> + dev_info(ucsi->dev, "UCSI_GET_PDOS not supported on this hardware\n");
Maybe it would be enough to guard GET_PDOS commands with the
UCSI_CAP_PDO_DETAILS check? Is it cleared on affected platforms?
> + else
> + dev_err(ucsi->dev, "UCSI_GET_PDOS failed (%d)\n", ret);
> + }
>
> return ret;
> }
> --
> 2.45.1
>
--
With best wishes
Dmitry
