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drm/amdgpu/soc15: fix nullptr issue in soc15_read_register() for reg base accessing
authorPrike.Liang <Prike.Liang@amd.com>
Mon, 8 Jun 2020 07:20:56 +0000 (15:20 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 1 Jul 2020 05:59:18 +0000 (01:59 -0400)
commit207f0f13574825a700a4ea52d3ac4821cea627c8
tree799ba6266e61fa9519cab7435ab30608de0cb2b9tree | snapshot
parentd00c3d045cd91b8d45e0a9cdfd91d4ace4e0bbc9commit | diff
drm/amdgpu/soc15: fix nullptr issue in soc15_read_register() for reg base accessing

The failed case is no SDMA1 IP for Renoir discovery table while in accessing SDMA1 reg base,
thus need have nullptr test for soc15_read_register invoked in MMR addres space inquire opt.

Signed-off-by: Prike.Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/soc15.c diff | blob | history
Domain: System / Kernel;