From: Huang Rui <ray.huang@amd.com>
Date: Thu, 8 Jun 2017 09:32:38 +0800
Subject: drm/amdgpu: add check when no firmware need to load
Git-commit: 7504938f8e733053c8cf17dd7ac1f28053b8126a
Patch-mainline: v4.14-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c
@@ -377,6 +377,11 @@ int amdgpu_ucode_init_bo(struct amdgpu_d
 	struct amdgpu_firmware_info *ucode = NULL;
 	const struct common_firmware_header *header = NULL;
 
+	if (!adev->firmware.fw_size) {
+		dev_warn(adev->dev, "No ip firmware need to load\n");
+		return 0;
+	}
+
 	err = amdgpu_bo_create(adev, adev->firmware.fw_size, PAGE_SIZE, true,
 				amdgpu_sriov_vf(adev) ? AMDGPU_GEM_DOMAIN_VRAM : AMDGPU_GEM_DOMAIN_GTT,
 				AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
@@ -459,6 +464,9 @@ int amdgpu_ucode_fini_bo(struct amdgpu_d
 	int i;
 	struct amdgpu_firmware_info *ucode = NULL;
 
+	if (!adev->firmware.fw_size)
+		return 0;
+
 	for (i = 0; i < adev->firmware.max_ucodes; i++) {
 		ucode = &adev->firmware.ucode[i];
 		if (ucode->fw) {