[PATCH] powerpc: use ARRAY_SIZE instead of division operation

This eliminates the following coccicheck warning:
./arch/powerpc/boot/mktree.c:130:31-32: WARNING: Use ARRAY_SIZE

Reported-by: Abaci Robot <redacted>
Signed-off-by: Yang Li <redacted>
---
 arch/powerpc/boot/mktree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/boot/mktree.c b/arch/powerpc/boot/mktree.c
index dc603f3..0b2def5 100644
--- a/arch/powerpc/boot/mktree.c
+++ b/arch/powerpc/boot/mktree.c

@@ -127,7 +127,7 @@ int main(int argc, char *argv[])
 			exit(5);
 		}
 		cp = tmpbuf;
-		for (i = 0; i < sizeof(tmpbuf) / sizeof(unsigned int); i++)
+		for (i = 0; i < ARRAY_SIZE(tmpbuf); i++)
 			cksum += *cp++;
 		if (write(out_fd, tmpbuf, sizeof(tmpbuf)) != sizeof(tmpbuf)) {
 			perror("boot-image write");

-- 
1.8.3.1

Hi Yang,

Unfortunately this breaks the build - see
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/1613808853-78381-1-git-send-email-yang.lee@linux.alibaba.com/

This is because 'boot/mktree.c' is a userspace program without access to
the usual kernel headers.

It might be best to get coccicheck to exclude all of
'arch/powerpc/boot/' as I believe everything in that directory is
compiled differently to the rest of the kernel (see the Makefile), but
maybe just blacklisting boot/mktree.c would be sufficient.

Kind regards,
Daniel

 			cksum += *cp++;
 		if (write(out_fd, tmpbuf, sizeof(tmpbuf)) != sizeof(tmpbuf)) {
 			perror("boot-image write");
-- 
1.8.3.1