linux-kernel - Re: [PATCH v4] drm/i915: Synchronize active and retire callbacks

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Date:   Tue, 21 Apr 2020 08:54:40 -0700
From:   Sultan Alsawaf <sultan@...neltoast.com>
To:     Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Cc:     Chris Wilson <chris@...is-wilson.co.uk>, stable@...r.kernel.org,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Matthew Auld <matthew.auld@...el.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] drm/i915: Synchronize active and retire callbacks

On Tue, Apr 21, 2020 at 09:51:37AM +0300, Joonas Lahtinen wrote:
> Quoting Sultan Alsawaf (2020-04-20 19:15:14)
> > On Mon, Apr 20, 2020 at 11:21:42AM +0300, Joonas Lahtinen wrote:
> > > So it seems that the patch got pulled into v5.6 and has been backported
> > > to v5.5 but not v5.4.
> > 
> > You're right, that's my mistake.
> 
> Did applying the patch to v5.4 fix the issue at hand?

Of course the patch doesn't apply as-is because the code's been shuffled around,
but yes. The crashes are gone with that patch, and I don't have the motivation
to check if that patch is actually correct, so hurray, problem solved. I'm not
going to send the backport myself because I'll probably be ignored, so you can
go ahead and do that.

Sultan