[Why] The "base_addr_is_mc_addr" field was added for dcn3.1 support but pa_config was never updated to set it to false. Uninitialized memory causes it to be set to true which results in address mistranslation and white screen. [How] Use memset to ensure all fields are initialized to 0 by default. Cc: Aaron Liu <aaron.liu@xxxxxxx> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 53363728dbb..b0426bb3f2e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1125,6 +1125,8 @@ static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_ uint32_t agp_base, agp_bot, agp_top; PHYSICAL_ADDRESS_LOC page_table_start, page_table_end, page_table_base; + memset(pa_config, 0, sizeof(*pa_config)); + logical_addr_low = min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18; pt_base = amdgpu_gmc_pd_addr(adev->gart.bo); -- 2.25.1
