Gcc report build warning as follows: kernel/smp.c:126:15: warning: variable 'csd_type' set but not used [-Wunused-but-set-variable] 126 | unsigned int csd_type; | ^~~~~~~~
'csd_type' is only used when CONFIG_64BIT defined, so move them under '#ifdef'. Reported-by: Hulk Robot <hul...@huawei.com> Signed-off-by: Wei Yongjun <weiyongj...@huawei.com> --- kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/smp.c b/kernel/smp.c index 6ec6c9578225..0130bdcf6d26 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -123,10 +123,10 @@ static void csd_lock_record(call_single_data_t *csd) static __always_inline int csd_lock_wait_getcpu(call_single_data_t *csd) { +#ifdef CONFIG_64BIT unsigned int csd_type; csd_type = CSD_TYPE(csd); -#ifdef CONFIG_64BIT if (csd_type == CSD_TYPE_ASYNC || csd_type == CSD_TYPE_SYNC) return csd->dst; // Other CSD_TYPE_ values might not have ->dst. #endif