[PATCH v4 03/15] drm/amdgpu: validate sw_fini before function call

[Sunil Khatri <sunil.khatri@amd.com>]

Before making a function call to sw_fini, validate
the function pointer like we do in sw_init.

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 782f01ab39e2..cf84b50f2355 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3379,12 +3379,13 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
 			amdgpu_ib_pool_fini(adev);
 			amdgpu_seq64_fini(adev);
 		}
-
-		r = adev->ip_blocks[i].version->funcs->sw_fini(&adev->ip_blocks[i]);
-		/* XXX handle errors */
-		if (r) {
-			DRM_DEBUG("sw_fini of IP block <%s> failed %d\n",
-				  adev->ip_blocks[i].version->funcs->name, r);
+		if (adev->ip_blocks[i].version->funcs->sw_fini) {
+			r = adev->ip_blocks[i].version->funcs->sw_fini(&adev->ip_blocks[i]);
+			/* XXX handle errors */
+			if (r) {
+				DRM_DEBUG("sw_fini of IP block <%s> failed %d\n",
+					  adev->ip_blocks[i].version->funcs->name, r);
+			}
 		}
 		adev->ip_blocks[i].status.sw = false;
 		adev->ip_blocks[i].status.valid = false;
-- 
2.34.1