From: Arnd Bergmann <arnd@xxxxxxxx> [ Upstream commit c5f320ff8a79501bb59338278336ec43acb9d7e2 ] gcc points out a mistake in the mca driver that goes back to before the git history: arch/ia64/kernel/mca_drv.c: In function 'init_record_index_pools': arch/ia64/kernel/mca_drv.c:346:54: error: expression does not compute the number of elements in this array; element typ e is 'int', not 'size_t' {aka 'long unsigned int'} [-Werror=sizeof-array-div] 346 | for (i = 1; i < sizeof sal_log_sect_min_sizes/sizeof(size_t); i++) | ^ This is the same as sizeof(size_t), which is two shorter than the actual array. Use the ARRAY_SIZE() macro to get the correct calculation instead. Link: https://lkml.kernel.org/r/20210514214123.875971-1-arnd@xxxxxxxxxx Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx> Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/ia64/kernel/mca_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c index 94f8bf777afa..3503d488e9b3 100644 --- a/arch/ia64/kernel/mca_drv.c +++ b/arch/ia64/kernel/mca_drv.c @@ -343,7 +343,7 @@ init_record_index_pools(void) /* - 2 - */ sect_min_size = sal_log_sect_min_sizes[0]; - for (i = 1; i < sizeof sal_log_sect_min_sizes/sizeof(size_t); i++) + for (i = 1; i < ARRAY_SIZE(sal_log_sect_min_sizes); i++) if (sect_min_size > sal_log_sect_min_sizes[i]) sect_min_size = sal_log_sect_min_sizes[i]; -- 2.30.2