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SubjectRe: [PATCH 4.18 222/235] drm/amd/pp: Send khz clock values to DC for smu7/8
On Mon, Oct 08, 2018 at 02:33:56PM +0000, Deucher, Alexander wrote:
>> -----Original Message-----
>> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Sent: Monday, September 24, 2018 7:53 AM
>> To: linux-kernel@vger.kernel.org
>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>;
>> stable@vger.kernel.org; Wentland, Harry <Harry.Wentland@amd.com>;
>> Deucher, Alexander <Alexander.Deucher@amd.com>; Zhu, Rex
>> <Rex.Zhu@amd.com>; Sasha Levin <alexander.levin@microsoft.com>
>> Subject: [PATCH 4.18 222/235] drm/amd/pp: Send khz clock values to DC for
>> smu7/8
>>
>> 4.18-stable review patch. If anyone has any objections, please let me know.
>>
>
>This regresses power usage on 4.18. Please revert.
>https://bugzilla.kernel.org/show_bug.cgi?id=201275

Hi Alex,

Thank you for the report.

I'm working on improving this process, I'd be very grateful if you could
answer a few questions about this:

1. Is the same breakage seen upstream? (if so, it should be reverted
there as well and we can grab the revert into -stable).
2. Does the issue reported by this patch ("pipes seem to hang with a 4k
DP and 1080p HDMI display") exist in the 4.18 stable tree?
3. If not, could you briefly explain why?


The algorithm I use was very confident about this patch being stable
material, and when I looked at it back then (and again now) I was very
confident of the same. If I can understand where I was wrong I could
improve my process.

Thank you!

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