Re: [git pull] drm for 5.14-rc1

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Hi Linus,

On Sun, Sep 19, 2021 at 12:06 AM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Sat, Sep 18, 2021 at 3:48 PM Sudip Mukherjee
> <sudipm.mukherjee@xxxxxxxxx> wrote:
> >
> > Also, I have now tested by reverting those two commits and I still get
> > the same trace on rpi4.
>
> Ok. I'm afraid we really need to have the VC4 people figure it out - I
> count do the two reverts that are reported to fix the RPi3 issue, but
> it looks like the RPi4 pulseaudio issue needs something else.
>
> Any chance you could bisect that?

Done, here is the bisect log:

# bad: [7c636d4d20f8c5acfbfbc60f326fddb0e1cf5daa] Merge tag 'dt-5.15'
of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
# good: [9e9fb7655ed585da8f468e29221f0ba194a5f613] Merge tag
'net-next-5.15' of
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
git bisect start '7c636d4d20f8' '9e9fb7655ed5' '--' 'drivers/gpu/drm/vc4/'
# good: [776efe800feda95a29cefecce1ce36cc27d70b29] drm/vc4: hdmi: Drop
devm interrupt handler for hotplug interrupts
git bisect good 776efe800feda95a29cefecce1ce36cc27d70b29
# bad: [588b3eee528873d73bf777f329d35b2e65e24777] Merge tag
'drm-misc-next-2021-07-16' of
git://anongit.freedesktop.org/drm/drm-misc into drm-next
git bisect bad 588b3eee528873d73bf777f329d35b2e65e24777
# bad: [27da370e0fb343a0baf308f503bb3e5dcdfe3362] drm/vc4: hdmi:
Remove drm_encoder->crtc usage
git bisect bad 27da370e0fb343a0baf308f503bb3e5dcdfe3362
# good: [44fe9f90eb9d2533d049b4ba09540eed6cad9f49] drm/vc4: hdmi: Only
call into DRM framework if registered
git bisect good 44fe9f90eb9d2533d049b4ba09540eed6cad9f49
# first bad commit: [27da370e0fb343a0baf308f503bb3e5dcdfe3362]
drm/vc4: hdmi: Remove drm_encoder->crtc usage

And indeed, reverting 27da370e0fb3 ("drm/vc4: hdmi: Remove
drm_encoder->crtc usage") on top of d4d016caa4b8 ("alpha: move
__udiv_qrnnd library function to arch/alpha/lib/")
has fixed the error.


-- 
Regards
Sudip



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