From: Roman Li <roman.li@xxxxxxx> [Why] Reset the shared dmub firmware region on dmub hw init to start with known state. [How] Memset the shared region to 0 in dmub_hw_init(). Suggested-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx> Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx> Signed-off-by: Roman Li <roman.li@xxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +++ 1 file changed, 3 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 616c0aa73224..53dc4c75fb75 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1207,6 +1207,9 @@ static int dm_dmub_hw_init(struct amdgpu_device *adev) memset(fb_info->fb[DMUB_WINDOW_6_FW_STATE].cpu_addr, 0, fb_info->fb[DMUB_WINDOW_6_FW_STATE].size); + memset(fb_info->fb[DMUB_WINDOW_SHARED_STATE].cpu_addr, 0, + fb_info->fb[DMUB_WINDOW_SHARED_STATE].size); + /* Initialize hardware. */ memset(&hw_params, 0, sizeof(hw_params)); hw_params.fb_base = adev->gmc.fb_start; -- 2.34.1
