From: Johan Hovold <johan@kernel.org>
To: regressions@lists.linux.dev
Cc: Abhinav Kumar <quic_abhinavk@quicinc.com>,
Rob Clark <robdclark@gmail.com>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Kuogee Hsieh <quic_khsieh@quicinc.com>,
Daniel Thompson <daniel.thompson@linaro.org>,
Bjorn Andersson <quic_bjorande@quicinc.com>,
dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: drm/msm: DisplayPort hard-reset on hotplug regression in 6.8-rc1
Date: Mon, 11 Mar 2024 16:16:40 +0100 [thread overview]
Message-ID: <Ze8gWHK2ipXIHRAP@hovoldconsulting.com> (raw)
In-Reply-To: <Ze8Ke_M2xHyPYCu-@hovoldconsulting.com>
On Mon, Mar 11, 2024 at 02:43:24PM +0100, Johan Hovold wrote:
> So, while it may still be theoretically possible to hit the resets after
> the revert, the HPD notify revert effectively "fixed" the regression in
> 6.8-rc1 by removing the preconditions that now made us hit it (i.e. the
> half-initialised bridge).
>
> It seems the hotplug state machine needs to be reworked completely, but
> at least we're roughly back where we were with 6.7 (including that the
> bus clocks will never be turned of because of the rpm leaks on
> disconnect).
#regzbot introduced: e467e0bde881
#regzbot fix: 664bad6af3cb
next prev parent reply other threads:[~2024-03-11 15:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-27 13:33 drm/msm: DisplayPort hard-reset on hotplug regression in 6.8-rc1 Johan Hovold
2024-03-08 12:43 ` Johan Hovold
2024-03-08 17:50 ` Abhinav Kumar
2024-03-09 16:30 ` Johan Hovold
2024-03-11 13:43 ` Johan Hovold
2024-03-11 15:16 ` Johan Hovold [this message]
2024-03-11 16:51 ` Abhinav Kumar
2024-03-12 8:31 ` Johan Hovold
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