[openeuler:OLK-5.10 24524/30000] drivers/crypto/montage/tsse/tsse_dev.h:85:6: warning: variable 'cpu' set but not used - Kernel

24 Oct 2024


      tree:   https://gitee.com/openeuler/kernel.git OLK-5.10
head:   52e62ae625fcfe934330b24239cf61af5b5ce33f
commit: d55c499d1e3a11eef5557afc31af5ef6baa44b8e [24524/30000] add support for Mont-TSSE Driver
config: x86_64-randconfig-r064-20241024 (https://download.01.org/0day-ci/archive/20241024/202410241950.tFucKzUb-lkp@i...)
compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241024/202410241950.tFucKzUb-lkp@i...)
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 lkp@intel.com
| Closes: https://lore.kernel.org/oe-kbuild-all/202410241950.tFucKzUb-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/crypto/montage/tsse/tsse_dev_mgr.c:13:
   In file included from include/linux/iommu.h:10:
   In file included from include/linux/scatterlist.h:8:
   In file included from include/linux/mm.h:1581:
   include/linux/vmstat.h:431:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     431 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   In file included from drivers/crypto/montage/tsse/tsse_dev_mgr.c:15:
...
...
drivers/crypto/montage/tsse/tsse_dev.h:85:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable]
85 |         int cpu, node;
         |             ^
   2 warnings generated.
--
   In file included from drivers/crypto/montage/tsse/tsse_vuart.c:25:
   In file included from drivers/crypto/montage/tsse/tsse_dev.h:13:
   In file included from include/linux/pci.h:1499:
   In file included from include/linux/dmapool.h:14:
   In file included from include/linux/scatterlist.h:8:
   In file included from include/linux/mm.h:1581:
   include/linux/vmstat.h:431:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     431 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   In file included from drivers/crypto/montage/tsse/tsse_vuart.c:25:
...
...
drivers/crypto/montage/tsse/tsse_dev.h:85:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable]
85 |         int cpu, node;
         |             ^
   drivers/crypto/montage/tsse/tsse_vuart.c:77:13: warning: unused function 'vuart_wait_for_xmitr' [-Wunused-function]
      77 | static void vuart_wait_for_xmitr(struct uart_port *port)
         |             ^~~~~~~~~~~~~~~~~~~~
   3 warnings generated.
Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for PGP_PRELOAD
   Depends on [n]: CRYPTO [=y] && ASYMMETRIC_KEY_TYPE [=n]
   Selected by [y]:
   - PGP_PRELOAD_PUBLIC_KEYS [=y] && CRYPTO [=y]
vim +/cpu +85 drivers/crypto/montage/tsse/tsse_dev.h
82	
    83	static inline int tsse_get_cur_node(void)
    84	{
...
85		int cpu, node;
86	
    87		cpu = get_cpu();
    88		node = topology_physical_package_id(cpu);
    89		put_cpu();
    90	
    91		return node;
    92	}
    93
-- 
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