drm/amdgpu: Remove pcie bw sys entry

Remove pcie bw sys entry for asics not supporting
such function
Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -895,7 +895,6 @@ static const struct amdgpu_asic_funcs aqua_vanjaram_asic_funcs =
 	.get_config_memsize = &soc15_get_config_memsize,
 	.need_full_reset = &soc15_need_full_reset,
 	.init_doorbell_index = &aqua_vanjaram_doorbell_index_init,
-	.get_pcie_usage = &vega20_get_pcie_usage,
 	.need_reset_on_init = &soc15_need_reset_on_init,
 	.get_pcie_replay_count = &amdgpu_nbio_get_pcie_replay_count,
 	.supports_baco = &soc15_supports_baco,

drivers/gpu/drm/amd/pm/amdgpu_pm.c

@@ -2174,7 +2174,8 @@ static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_
 			*states = ATTR_STATE_UNSUPPORTED;
 	} else if (DEVICE_ATTR_IS(pcie_bw)) {
 		/* PCIe Perf counters won't work on APU nodes */
-		if (adev->flags & AMD_IS_APU)
+		if (adev->flags & AMD_IS_APU ||
+		    !adev->asic_funcs->get_pcie_usage)
 			*states = ATTR_STATE_UNSUPPORTED;
 	} else if (DEVICE_ATTR_IS(unique_id)) {
 		switch (gc_ver) {