[PATCH] Revert "drm/radeon: handle PCIe root ports with addressing limitations"

[Daniel Vetter]

On Wed, Sep 16, 2020 at 08:33:00AM +0200, Greg KH wrote:
> On Tue, Sep 15, 2020 at 02:46:07PM -0400, Alex Deucher wrote:
> > This change breaks tons of systems.
> 
> Very vague :(
> 
> This commit has also been merged for over a year, why the sudden
> problem now?

Unrelated rant, but one year is generally what it takes for most users to
upgrade to new kernels, through their distro updates. Especially for older
hw like the radeon drivers (since 5 years or so amd gpus switched over to
amdgpu.ko).

So surprise that bugs only show up after 1+ year shouldn't be a surprise
:-) My personal rule is that I put a 1 year spacer between a risky change
and any cleanup that enables. Too many regrets in the past.

Cheers, Daniel

> 
> > This reverts commit 33b3ad3788aba846fc8b9a065fe2685a0b64f713.
> 
> You mean "33b3ad3788ab ("drm/radeon: handle PCIe root ports with
> addressing limitations")"?
> 
> That's the proper way to reference commits in changelogs please.  It's
> even documented that way...
> 
> > 
> > Bug: https://bugzilla.kernel.org/show_bug.cgi?id=206973
> > Bug: https://bugzilla.kernel.org/show_bug.cgi?id=206697
> > Bug: https://bugzilla.kernel.org/show_bug.cgi?id=207763
> > Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1140
> > Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1287
> > Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> > Cc: stable at vger.kernel.org
> > Cc: Christoph Hellwig <hch at lst.de>
> > Cc: christian.koenig at amd.com
> 
> Fixes: 33b3ad3788ab ("drm/radeon: handle PCIe root ports with addressing limitations")
> 
> as well?
> 
> thanks,
> 
> greg k-h
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch