[PATCH 5.14 426/432] drm/amd/display: setup system context for APUs

Greg Kroah-Hartman
2021-09-16T17:52:06Z

From: Aaron Liu <aaron.liu@amd.com>

commit 3ca001aff0878546494d7f403334c8d987924977 upstream.

Scatter/gather is APU feature starting from carrizo.
adev->apu_flags is not used for all APUs.
adev->flags & AMD_IS_APU can be used for all APUs.

Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1202,7 +1202,7 @@ static int amdgpu_dm_init(struct amdgpu_
dc_hardware_init(adev->dm.dc);

#if defined(CONFIG_DRM_AMD_DC_DCN)
- if (adev->apu_flags) {
+ if ((adev->flags & AMD_IS_APU) && (adev->asic_type >= CHIP_CARRIZO)) {
struct dc_phy_addr_space_config pa_config;

mmhub_read_system_context(adev, &pa_config);