Subject: build failure of next-20220811 due to b1a63a0b48ad ("drm/amd/display: consider DSC pass-through during mode validation")

From: "Sudip Mukherjee (Codethink)" <[email-masked]>
Date: Thu, 11 Aug 2022 18:10:48 +0100

Hi All,

Not sure if it has been reported, builds of riscv, alpha, s390, arm,
arm64, xtensa, mips, csky allmodconfig have failed to build next-20220811
with the 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!

git bisect pointed to b1a63a0b48ad ("drm/amd/display: consider DSC pass-through during mode validation")
And, reverting that commit has fixed the build failure.

I will be happy to test any patch or provide any extra log if needed.

--
Regards
Sudip