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Date: Tue, 22 Mar 2016 16:11:20 -0400
From: Greg KH <gregkh@linuxfoundation.org>
To: Alex Deucher <alexdeucher@gmail.com>
Cc: christian.koenig@amd.com, greg@chown.ath.cx,
	stable@vger.kernel.org, Alex Deucher <alexander.deucher@amd.com>
Subject: Re: [PATCH] drm/amdgpu: fix regression on CIK (v2)
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On Tue, Mar 22, 2016 at 03:48:18PM -0400, Alex Deucher wrote:
> From: Grigori Goronzy <greg@chown.ath.cx>
> 
> This fix was written against drm-next, but when it was
> backported to 4.5 as a stable fix, the driver internal
> structure change was missed.  Fix that up here to avoid
> a hang due to waiting for the wrong sequence number.
> 
> v2: agd: fix up commit message
> 
> Signed-off-by: Grigori Goronzy <greg@chown.ath.cx>
> Cc: stable@vger.kernel.org
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> ---
> 
> Hi Greg,
> 
> The code is correct for 4.6, this fix should be applied to
> 4.5 and older stable kernels.

What is the patch in 4.6 that made it "correct"?  I would much rather
take that than something else.

thanks,

greg k-h