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Date:   Thu, 11 Aug 2022 13:02:50 +0200
From:   Anders Roxell <anders.roxell@linaro.org>
To:     Hamza Mahfooz <hamza.mahfooz@amd.com>
Cc:     linux-kernel@vger.kernel.org,
        Harry Wentland <harry.wentland@amd.com>,
        Fangzhi Zuo <Jerry.Zuo@amd.com>, Wayne Lin <Wayne.Lin@amd.com>,
        Aurabindo Pillai <aurabindo.pillai@amd.com>,
        hersenxs.wu@amd.com, Leo Li <sunpeng.li@amd.com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        Christian =?utf-8?B?S8O2bmln?= <christian.koenig@amd.com>,
        "Pan, Xinhui" <Xinhui.Pan@amd.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>, Lyude Paul <lyude@redhat.com>,
        Mikita Lipski <mikita.lipski@amd.com>,
        Claudio Suarez <cssk@net-c.es>,
        Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>,
        Roman Li <Roman.Li@amd.com>, Ian Chen <ian.chen@amd.com>,
        Colin Ian King <colin.king@intel.com>,
        Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Jani Nikula <jani.nikula@intel.com>,
        Imran Khan <imran.f.khan@oracle.com>,
        Ville =?utf-8?B?U3lyasOkbMOk?= <ville.syrjala@linux.intel.com>,
        Kees Cook <keescook@chromium.org>,
        Imre Deak <imre.deak@intel.com>,
        Sankeerth Billakanti <quic_sbillaka@quicinc.com>,
        Javier Martinez Canillas <javierm@redhat.com>,
        amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v2 2/3] drm/amd/display: consider DSC pass-through during
 mode validation
Message-ID: <20220811110250.GA520@mutt>
References: <20220805211317.176672-1-hamza.mahfooz@amd.com>
 <20220805211317.176672-2-hamza.mahfooz@amd.com>
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On 2022-08-05 17:13, Hamza Mahfooz wrote:
> Add a mode validation routine for DSC pass-through. Both the link from
> source to hub, and the link from hub to monitor are checked, according
> to the current link training result and full pbn returned by enum path
> resource sideband message.
> 
> Pick up the minimum value as the bandwidth bottleneck for the end to
> end link bandwidth constraint, and check if the maximum DSC decompression
> bandwidth can fit.
> 
> Co-authored-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
> Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>

Hi,

Building an arm64 allmodconfig kernel from todays next tag, next-20220811.
I can see the following build error.

ERROR: modpost: "dc_dsc_compute_bandwidth_range" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "dc_dsc_get_policy_for_timing" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

When I reverted this patch I was able to build an arm64 allmodconfig
kernel.


Cheers,
Anders