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From: Thierry Reding <thierry.reding@gmail.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: mperttunen@nvidia.com, iommu@lists.linux.dev,
	linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Joerg Roedel <joro@8bytes.org>
Subject: Re: [PATCH] gpu: host1x: Register context bus unconditionally
Date: Fri, 8 Jul 2022 17:11:57 +0200	[thread overview]
Message-ID: <YshJPZMMlZVl5i51@orome> (raw)
In-Reply-To: <70cb6f20-7028-9cf8-6b3a-a074c0047687@arm.com>

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On Fri, Jul 08, 2022 at 03:44:09PM +0100, Robin Murphy wrote:
> On 2022-07-08 15:32, Thierry Reding wrote:
> > On Thu, Jul 07, 2022 at 06:30:44PM +0100, Robin Murphy wrote:
> > > Conditional registration is a problem for other subsystems which may
> > > unwittingly try to interact with host1x_context_device_bus_type in an
> > > uninitialised state on non-Tegra platforms. A look under /sys/bus on a
> > > typical system already reveals plenty of entries from enabled but
> > > otherwise irrelevant configs, so lets keep things simple and register
> > > our context bus unconditionally too.
> > > 
> > > Signed-off-by: Robin Murphy <robin.murphy@arm.com>
> > > ---
> > >   drivers/gpu/host1x/context_bus.c | 5 -----
> > >   1 file changed, 5 deletions(-)
> > 
> > Applied, thanks.
> > 
> > Do we need this in v5.19 or is it enough if this gets into v5.20?
> 
> It's not strictly a critical fix, so I think 5.20 is fine. I plan to post v4
> of my bus_set_iommu() series next week as the hopefully-final version, but
> at this point I think it might be safer to hold off actually merging that
> until early next cycle, to give it plenty of time in -next.

Alright, I'll send it for v5.20 for now. If things change we can always
backport to v5.19.

Thierry

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      reply	other threads:[~2022-07-08 15:12 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-07 17:30 [PATCH] gpu: host1x: Register context bus unconditionally Robin Murphy
2022-07-08  8:33 ` Mikko Perttunen
2022-07-08 14:32 ` Thierry Reding
2022-07-08 14:44   ` Robin Murphy
2022-07-08 15:11     ` Thierry Reding [this message]

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