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Date: Sun, 20 Jul 2025 12:26:48 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Lauri Tirkkonen <lauri@hacktheplanet.fi>
Cc: Mario Limonciello <superm1@kernel.org>, stable@vger.kernel.org,
 regressions@lists.linux.dev, amd-gfx@lists.freedesktop.org,
 Wayne Lin <wayne.lin@amd.com>, Alex Deucher <alexander.deucher@amd.com>
Subject: Re: [REGRESSION] [PATCH] drm/amd/display: fix initial backlight
 brightness calculation
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On Sun, Jul 20, 2025 at 06:36:54PM +0900, Lauri Tirkkonen wrote:
> DIV_ROUND_CLOSEST(x, 100) returns either 0 or 1 if 0<x<=100, so the
> division needs to be performed after the multiplication and not the
> other way around, to properly scale the value.
> 
> Fixes: 6c56c8ec6f97 ("drm/amd/display: Fix default DC and AC levels")

This should be a commit id in Linus's tree, NOT in just one stable
branch.

Also, you forgot to add a cc: stable@vger.kernel.org so that it will be
picked up by a stable release.

thanks,

greg k-h