[kkdwivedi:atype 7/45] kernel/bpf/cgroup.c:2546:23: warning: unused variable 'atype'

tree:   https://github.com/kkdwivedi/linux atype
head:   5df289d7c4d635b11dcb0189c0ccd05c28d743c4
commit: 3dc38bbc8129a334d0172e7e3eaf878f8d76aa56 [7/45] bpf: Resolve freplace types in callback and fixup paths
config: arm-randconfig-004-20260810 (https://download.01.org/0day-ci/archive/20260810/[email protected]/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 12df34b8469b8095359de8c249cb1b2753fadeea)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260810/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> kernel/bpf/cgroup.c:2546:23: warning: unused variable 'atype' [-Wunused-variable]
    2546 |         enum bpf_attach_type atype = resolve_attach_type(prog);
         |                              ^~~~~
   1 warning generated.


vim +/atype +2546 kernel/bpf/cgroup.c

  2541	
  2542	static const struct bpf_func_proto *
  2543	cg_sockopt_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
  2544	{
  2545		const struct bpf_func_proto *func_proto;
> 2546		enum bpf_attach_type atype = resolve_attach_type(prog);
  2547	
  2548		func_proto = cgroup_common_func_proto(func_id, prog);
  2549		if (func_proto)
  2550			return func_proto;
  2551	
  2552		switch (func_id) {
  2553	#ifdef CONFIG_NET
  2554		case BPF_FUNC_get_netns_cookie:
  2555			return &bpf_get_netns_cookie_sockopt_proto;
  2556		case BPF_FUNC_sk_storage_get:
  2557			return &bpf_sk_storage_get_proto;
  2558		case BPF_FUNC_sk_storage_delete:
  2559			return &bpf_sk_storage_delete_proto;
  2560		case BPF_FUNC_setsockopt:
  2561			if (atype == BPF_CGROUP_SETSOCKOPT)
  2562				return &bpf_sk_setsockopt_proto;
  2563			return NULL;
  2564		case BPF_FUNC_getsockopt:
  2565			if (atype == BPF_CGROUP_SETSOCKOPT)
  2566				return &bpf_sk_getsockopt_proto;
  2567			return NULL;
  2568	#endif
  2569	#ifdef CONFIG_INET
  2570		case BPF_FUNC_tcp_sock:
  2571			return &bpf_tcp_sock_proto;
  2572	#endif
  2573		case BPF_FUNC_perf_event_output:
  2574			return &bpf_event_output_data_proto;
  2575		default:
  2576			return bpf_base_func_proto(func_id, prog);
  2577		}
  2578	}
  2579	

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