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From:   Stephen Boyd <swboyd@chromium.org>
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Date:   Wed, 4 Aug 2021 09:24:54 -0700
Message-ID: <CAE-0n52e3FuhhiNqRTbDmaTM5TuLTgOsSYJab7uA1=N00uf16w@mail.gmail.com>
Subject: Re: [PATCH v4] drm/msm/dp: update is_connected status base on sink
 count at dp_pm_resume()
To:     Kuogee Hsieh <khsieh@codeaurora.org>, agross@kernel.org,
        bjorn.andersson@linaro.org, robdclark@gmail.com, sean@poorly.run,
        vkoul@kernel.org
Cc:     abhinavk@codeaurora.org, aravindh@codeaurora.org,
        freedreno@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
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Quoting Kuogee Hsieh (2021-08-04 08:51:01)
> Currently at dp_pm_resume() is_connected state is decided base on hpd connection
> status only. This will put is_connected in wrongly "true" state at the scenario
> that dongle attached to DUT but without hmdi cable connecting to it. Fix this
> problem by adding read sink count from dongle and decided is_connected state base
> on both sink count and hpd connection status.
>
> Changes in v2:
> -- remove dp_get_sink_count() cand call drm_dp_read_sink_count()
>
> Changes in v3:
> -- delete status local variable from dp_pm_resume()
>
> Changes in v4:
> -- delete un necessary comment at dp_pm_resume()
>
> Fixes: d9aa6571b28ba ("drm/msm/dp: check sink_count before update is_connected status")
> Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
> ---

Tested-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>