[PATCH v2 2/3] drm/amd/display: consider DSC pass-through during mode validation

Anders Roxell anders.roxell at linaro.org
Thu Aug 11 11:02:50 UTC 2022


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 at amd.com>
> Signed-off-by: Hamza Mahfooz <hamza.mahfooz at 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


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