linux-kernel - Re: [PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor

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Date:   Tue, 14 Mar 2017 16:50:23 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     Michel Dänzer <michel@...nzer.net>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        akpm@...ux-foundation.org,
        Michel Dänzer <michel.daenzer@....com>,
        Sonny Jiang <sonny.jiang@....com>,
        Ashutosh Kumar <ashutosh.kumar@....com>,
        Alex Deucher <alexander.deucher@....com>
Subject: Re: [PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to
 hide out of bounds HW cursor

On Mon, 2017-03-13 at 12:35 +0900, Michel Dänzer wrote:
> On 10/03/17 08:46 PM, Ben Hutchings wrote:
> > 3.16.42-rc1 review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > > > From: Michel Dänzer <michel.daenzer@....com>
> > 
> > commit d74c67dd7800fc7aae381f272875c337f268806c upstream.
> > 
> > The crtc_h/vdisplay fields may not match the CRTC viewport dimensions
> > with special modes such as interlaced ones.
> > 
> > Fixes the HW cursor disappearing in the bottom half of the screen with
> > interlaced modes.
> > 
> > Fixes: 6b16cf7785a4 ("drm/radeon: Hide the HW cursor while it's out of bounds")
> 
> 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.

-- 
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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