[patch] drm/amdgpu: potential NULL dereference on error

debugfs_create_file() can return an error pointer if debugfs is disabled or it can return NULL on error.

Signed-off-by: Dan Carpenter dan.carpenter@oracle.com

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 36be03c..adba2a1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1980,6 +1980,8 @@ static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev) adev, &amdgpu_debugfs_regs_fops); if (IS_ERR(ent)) return PTR_ERR(ent); + if (!ent) + return -ENOMEM; i_size_write(ent->d_inode, adev->rmmio_size); adev->debugfs_regs = ent;