drm/amdgpu:fix firmware memoryleak(v2)

this fix memory leak due to request_firmware after driver
unloaded

v2:
release gmc firmware for gmc6/7/8 as well
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -92,6 +92,12 @@ static int psp_sw_init(void *handle)
 
 static int psp_sw_fini(void *handle)
 {
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	release_firmware(adev->psp.sos_fw);
+	adev->psp.sos_fw = NULL;
+	release_firmware(adev->psp.asd_fw);
+	adev->psp.asd_fw = NULL;
 	return 0;
 }
 

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -384,6 +384,25 @@ static int gfx_v9_0_ring_test_ib(struct amdgpu_ring *ring, long timeout)
         return r;
 }
 
+
+static void gfx_v9_0_free_microcode(struct amdgpu_device *adev)
+{
+	release_firmware(adev->gfx.pfp_fw);
+	adev->gfx.pfp_fw = NULL;
+	release_firmware(adev->gfx.me_fw);
+	adev->gfx.me_fw = NULL;
+	release_firmware(adev->gfx.ce_fw);
+	adev->gfx.ce_fw = NULL;
+	release_firmware(adev->gfx.rlc_fw);
+	adev->gfx.rlc_fw = NULL;
+	release_firmware(adev->gfx.mec_fw);
+	adev->gfx.mec_fw = NULL;
+	release_firmware(adev->gfx.mec2_fw);
+	adev->gfx.mec2_fw = NULL;
+
+	kfree(adev->gfx.rlc.register_list_format);
+}
+
 static int gfx_v9_0_init_microcode(struct amdgpu_device *adev)
 {
 	const char *chip_name;
@@ -1429,6 +1448,7 @@ static int gfx_v9_0_sw_fini(void *handle)
 
 	gfx_v9_0_mec_fini(adev);
 	gfx_v9_0_ngg_fini(adev);
+	gfx_v9_0_free_microcode(adev);
 
 	return 0;
 }

drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c

@@ -901,6 +901,8 @@ static int gmc_v6_0_sw_fini(void *handle)
 	gmc_v6_0_gart_fini(adev);
 	amdgpu_gem_force_release(adev);
 	amdgpu_bo_fini(adev);
+	release_firmware(adev->mc.fw);
+	adev->mc.fw = NULL;
 
 	return 0;
 }

drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c

@@ -1050,6 +1050,8 @@ static int gmc_v7_0_sw_fini(void *handle)
 	gmc_v7_0_gart_fini(adev);
 	amdgpu_gem_force_release(adev);
 	amdgpu_bo_fini(adev);
+	release_firmware(adev->mc.fw);
+	adev->mc.fw = NULL;
 
 	return 0;
 }

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

@@ -1147,6 +1147,8 @@ static int gmc_v8_0_sw_fini(void *handle)
 	gmc_v8_0_gart_fini(adev);
 	amdgpu_gem_force_release(adev);
 	amdgpu_bo_fini(adev);
+	release_firmware(adev->mc.fw);
+	adev->mc.fw = NULL;
 
 	return 0;
 }

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

@@ -1264,6 +1264,11 @@ static int sdma_v4_0_sw_fini(void *handle)
 	for (i = 0; i < adev->sdma.num_instances; i++)
 		amdgpu_ring_fini(&adev->sdma.instance[i].ring);
 
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		release_firmware(adev->sdma.instance[i].fw);
+		adev->sdma.instance[i].fw = NULL;
+	}
+
 	return 0;
 }