linux-kernel - Re: [PATCH] BACKPORT: drm/amdgpu/disply: set num

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Date:   Mon, 30 May 2022 15:05:08 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Ryan Lin <tsung-hua.lin@....com>
Cc:     leon.li@....com, praful.swarnakar@....com, shirish.s@....com,
        ching-shih.li@....com, Alex Deucher <alexander.deucher@....com>,
        Daniel Vetter <daniel@...ll.ch>,
        Nicholas Kazlauskas <nicholas.kazlauskas@....com>,
        stable@...r.kernel.org, Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Christian König <christian.koenig@....com>,
        "David (ChunMing) Zhou" <David1.Zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Bas Nieuwenhuizen <bas@...nieuwenhuizen.nl>,
        Sean Paul <seanpaul@...omium.org>,
        Sasha Levin <sashal@...nel.org>,
        Mark Yacoub <markyacoub@...gle.com>,
        Roman Li <Roman.Li@....com>,
        Ikshwaku Chauhan <ikshwaku.chauhan@....corp-partner.google.com>,
        Simon Ser <contact@...rsion.fr>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] BACKPORT: drm/amdgpu/disply: set num_crtc earlier

On Mon, May 30, 2022 at 05:29:02PM +0800, Ryan Lin wrote:
> From: Alex Deucher <alexander.deucher@....com>
> 
> To avoid a recently added warning:
>  Bogus possible_crtcs: [ENCODER:65:TMDS-65] possible_crtcs=0xf (full crtc mask=0x7)
>  WARNING: CPU: 3 PID: 439 at drivers/gpu/drm/drm_mode_config.c:617 drm_mode_config_validate+0x178/0x200 [drm]
> In this case the warning is harmless, but confusing to users.
> 
> Fixes: 0df108237433 ("drm: Validate encoder->possible_crtcs")
> Bug: https://bugzilla.kernel.org/show_bug.cgi?id=209123
> Reviewed-by: Daniel Vetter <daniel@...ll.ch>
> Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@....com>
> Signed-off-by: Alex Deucher <alexander.deucher@....com>
> Cc: stable@...r.kernel.org


Why did you not sign off on this?

And what is the git id of this in Linus's tree?

> Conflicts:
> 	drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> 	[Ryan Lin: Fixed the conflict, remove the non-main changed part
> 	of this patch]

No need for this here, right?

thanks,

greg k-h