drm/radeon: add a check for allocation failure (v2)

We can easily return -ENOMEM here if kzalloc() fails.

v2: agd5f: drop the vm mutex

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index ccae4d9..9c8358f 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -483,6 +483,10 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
                        /* add a clone of the bo_va to clear the old address */
                        struct radeon_bo_va *tmp;
                        tmp = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL);
+                       if (!tmp) {
+                               mutex_unlock(&vm->mutex);
+                               return -ENOMEM;
+                       }
                        tmp->it.start = bo_va->it.start;
                        tmp->it.last = bo_va->it.last;
                        tmp->vm = vm;