linux-kernel - Re: [PATCH v2 0/2] fix missing unplug interrupt problem

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Message-ID: <161056955435.3661239.1548841852585636847@swboyd.mtv.corp.google.com>
Date:   Wed, 13 Jan 2021 12:25:54 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Kuogee Hsieh <khsieh@...eaurora.org>,
        dri-devel@...ts.freedesktop.org, robdclark@...il.com,
        sean@...rly.run
Cc:     Kuogee Hsieh <khsieh@...eaurora.org>, tanmay@...eaurora.org,
        abhinavk@...eaurora.org, aravindh@...eaurora.org, airlied@...ux.ie,
        daniel@...ll.ch, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2]  fix missing unplug interrupt problem

Quoting Kuogee Hsieh (2021-01-13 10:59:58)
> Both AUX_SW_RESET and DP_SW_RESET clear pending HPD interrupts.
> Therefore irq_hpd handler should not issues either aux or sw reset
> to avoid following unplug interrupt be cleared accidentally.
> 
> Kuogee Hsieh (2):
>   drm/msm/dp: return fail when both link lane and rate are 0 at dpcd
>     read
>   drm/msm/dp: unplug interrupt missed after irq_hpd handler

It won't apply to the drm msm tree. Please rebase and resend.