linux-kernel - Re: [PATCH] usb: typec: ucsi: fix gpio-based orientation detection

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Date:   Fri, 8 Dec 2023 14:37:52 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Johan Hovold <johan+linaro@...nel.org>
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: typec: ucsi: fix gpio-based orientation detection

On Fri, 8 Dec 2023 at 14:37, Johan Hovold <johan+linaro@...nel.org> wrote:
>
> Fix the recently added connector sanity check which was off by one and
> prevented orientation notifications from being handled correctly for the
> second port when using GPIOs to determine orientation.
>
> Fixes: c6165ed2f425 ("usb: ucsi: glink: use the connector orientation GPIO to provide switch events")
> Cc: Neil Armstrong <neil.armstrong@...aro.org>
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

> ---
>
> I found this one through inspection when skimming the driver.
>
> Johan
>
>
>  drivers/usb/typec/ucsi/ucsi_glink.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c
> index db6e248f8208..4853141cd10c 100644
> --- a/drivers/usb/typec/ucsi/ucsi_glink.c
> +++ b/drivers/usb/typec/ucsi/ucsi_glink.c
> @@ -228,7 +228,7 @@ static void pmic_glink_ucsi_notify(struct work_struct *work)
>
>         con_num = UCSI_CCI_CONNECTOR(cci);
>         if (con_num) {
> -               if (con_num < PMIC_GLINK_MAX_PORTS &&
> +               if (con_num <= PMIC_GLINK_MAX_PORTS &&
>                     ucsi->port_orientation[con_num - 1]) {
>                         int orientation = gpiod_get_value(ucsi->port_orientation[con_num - 1]);
>
> --
> 2.41.0
>


-- 
With best wishes
Dmitry