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Date: Mon, 24 Mar 2025 11:34:04 -0700
From: Greg KH <gregkh@linuxfoundation.org>
To: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: stable@vger.kernel.org, Martin Tsai <martin.tsai@amd.com>,
	Robin Chen <robin.chen@amd.com>,
	Daniel Wheeler <daniel.wheeler@amd.com>,
	Alex Deucher <alexander.deucher@amd.com>
Subject: Re: [PATCH 6.1.y] drm/amd/display: should support dmub hw lock on
 Replay
Message-ID: <2025032452-tarantula-encircle-6fd3@gregkh>
References: <2025032457-occultist-maximum-38b6@gregkh>
 <20250324164929.2622811-1-aurabindo.pillai@amd.com>
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In-Reply-To: <20250324164929.2622811-1-aurabindo.pillai@amd.com>

On Mon, Mar 24, 2025 at 12:49:29PM -0400, Aurabindo Pillai wrote:
> From: Martin Tsai <martin.tsai@amd.com>
> 
> [Why]
> Without acquiring DMCUB hw lock, a race condition is caused with
> Panel Replay feature, which will trigger a hang. Indicate that a
> lock is necessary to prevent this when replay feature is enabled.
> 
> [How]
> To allow dmub hw lock on Replay.
> 
> Reviewed-by: Robin Chen <robin.chen@amd.com>
> Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
> Signed-off-by: Martin Tsai <martin.tsai@amd.com>
> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> (cherry picked from commit bfeefe6ea5f18cabb8fda55364079573804623f9)
> ---
>  drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c | 3 +++
>  1 file changed, 3 insertions(+)

Does not apply to the tree at all :(