Message-ID: <1489510223.2852.11.camel@decadent.org.uk>
Subject: Re: [PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to
 hide out of bounds HW cursor
From: Ben Hutchings <ben@decadent.org.uk>
To: Michel =?ISO-8859-1?Q?D=E4nzer?= <michel@daenzer.net>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        akpm@linux-foundation.org,
        Michel =?ISO-8859-1?Q?D=E4nzer?= <michel.daenzer@amd.com>,
        Sonny Jiang <sonny.jiang@amd.com>,
        Ashutosh Kumar <ashutosh.kumar@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 14 Mar 2017 16:50:23 +0000
In-Reply-To: <2719d055-9f9a-15c4-f20b-482947357a32@daenzer.net>
References: <lsq.1489146383.656940412@decadent.org.uk>
         <2719d055-9f9a-15c4-f20b-482947357a32@daenzer.net>
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On Mon, 2017-03-13 at 12:35 +0900, Michel D=C3=A4nzer wrote:
> On 10/03/17 08:46 PM, Ben Hutchings wrote:
> > 3.16.42-rc1 review patch.=C2=A0=C2=A0If anyone has any objections, plea=
se let me know.
> >=20
> > ------------------
> >=20
> > > > From: Michel D=C3=A4nzer <michel.daenzer@amd.com>
> >=20
> > commit d74c67dd7800fc7aae381f272875c337f268806c upstream.
> >=20
> > The crtc_h/vdisplay fields may not match the CRTC viewport dimensions
> > with special modes such as interlaced ones.
> >=20
> > Fixes the HW cursor disappearing in the bottom half of the screen with
> > interlaced modes.
> >=20
> > Fixes: 6b16cf7785a4 ("drm/radeon: Hide the HW cursor while it's out of =
bounds")
>=20
> It might make sense to squash together the backports of this commit and
> 6b16cf7785a4, or at least move them closer together in the series, to
> prevent people from hitting the regressed state.

I hardly ever squash commits together, as it's easier to keep track of
what has been applied if there is a one-to-one mapping.

I will move these two together in the series, but there are lots of
other cases like this on stable branches.

Ben.

--=20
Ben Hutchings
The obvious mathematical breakthrough [to break modern encryption]
would be
development of an easy way to factor large prime numbers. - Bill Gates


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