Re: [PATCH 0/6] soc: qcom: pmic_glink_altmode: fix drm bridge use-after-free

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On Fri, Feb 23, 2024 at 12:03:10PM +0100, Neil Armstrong wrote:
> On 23/02/2024 12:02, Neil Armstrong wrote:
> > Hi,
> > 
> > On Sat, 17 Feb 2024 16:02:22 +0100, Johan Hovold wrote:
> >> Starting with 6.8-rc1 the internal display sometimes fails to come up on
> >> machines like the Lenovo ThinkPad X13s and the logs indicate that this
> >> is due to a regression in the DRM subsystem [1].
> >>
> >> This series fixes a race in the pmic_glink_altmode driver which was
> >> exposed / triggered by the transparent DRM bridges rework that went into
> >> 6.8-rc1 and that manifested itself as a bridge failing to attach and
> >> sometimes triggering a NULL-pointer dereference.
> >>
> >> [...]
> > 
> > Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-fixes)
> > 
> > [1/6] drm/bridge: aux-hpd: fix OF node leaks
> >        https://cgit.freedesktop.org/drm/drm-misc/commit/?id=9ee485bdda68d6d3f5728cbe3150eb9013d7d22b
> > [2/6] drm/bridge: aux-hpd: separate allocation and registration
> >        (no commit info)
> > [3/6] soc: qcom: pmic_glink_altmode: fix drm bridge use-after-free
> >        (no commit info)
> > [4/6] soc: qcom: pmic_glink: Fix boot when QRTR=m
> >        (no commit info)
> > [5/6] phy: qcom-qmp-combo: fix drm bridge registration
> >        (no commit info)
> > [6/6] phy: qcom-qmp-combo: fix type-c switch registration
> >        (no commit info)
> > 
> 
> To clarify, I only applied patch 1 to drm-misc-fixes

Ok, but can you please not do that? :)

These patches should go in through the same tree to avoid conflicts.

I discussed this with Bjorn and Dmitry the other day and the conclusion
was that it was easiest to take all of these through DRM.

With Vinod acking the PHY patches, I believe you have what you need to
merge the whole series now?

Johan



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