[PATCH] powerpc/module_64: fix array_size.cocci warning

[PATCH] powerpc/module_64: fix array_size.cocci warning

[Guo Zhengkui]

Fix following coccicheck warning:
./arch/powerpc/kernel/module_64.c:432:40-41: WARNING: Use ARRAY_SIZE.

ARRAY_SIZE(arr) is a macro provided by the kernel. It makes sure that arr
is an array, so it's safer than sizeof(arr) / sizeof(arr[0]) and more
standard.

Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
---
 arch/powerpc/kernel/module_64.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
index 6a45e6ddbe58..94d14cf99bca 100644
--- a/arch/powerpc/kernel/module_64.c
+++ b/arch/powerpc/kernel/module_64.c
@@ -14,6 +14,7 @@
 #include <linux/ftrace.h>
 #include <linux/bug.h>
 #include <linux/uaccess.h>
+#include <linux/kernel.h>
 #include <asm/module.h>
 #include <asm/firmware.h>
 #include <asm/code-patching.h>
@@ -429,7 +430,7 @@ static inline int create_stub(const Elf64_Shdr *sechdrs,
 	if (is_mprofile_ftrace_call(name))
 		return create_ftrace_stub(entry, addr, me);
 
-	for (i = 0; i < sizeof(ppc64_stub_insns) / sizeof(u32); i++) {
+	for (i = 0; i < ARRAY_SIZE(ppc64_stub_insns); i++) {
 		if (patch_instruction(&entry->jump[i],
 				      ppc_inst(ppc64_stub_insns[i])))
 			return 0;
-- 
2.20.1

Re: [PATCH] powerpc/module_64: fix array_size.cocci warning

[Russell Currey]

On Wed, 2022-02-23 at 15:54 +0800, Guo Zhengkui wrote:
> Fix following coccicheck warning:
> ./arch/powerpc/kernel/module_64.c:432:40-41: WARNING: Use ARRAY_SIZE.
> 
> ARRAY_SIZE(arr) is a macro provided by the kernel. It makes sure that
> arr
> is an array, so it's safer than sizeof(arr) / sizeof(arr[0]) and more
> standard.
> 
> Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>

Reviewed-by: Russell Currey <ruscur@russell.cc>

Re: [PATCH] powerpc/module_64: fix array_size.cocci warning

[Michael Ellerman]

On Wed, 23 Feb 2022 15:54:23 +0800, Guo Zhengkui wrote:
> Fix following coccicheck warning:
> ./arch/powerpc/kernel/module_64.c:432:40-41: WARNING: Use ARRAY_SIZE.
> 
> ARRAY_SIZE(arr) is a macro provided by the kernel. It makes sure that arr
> is an array, so it's safer than sizeof(arr) / sizeof(arr[0]) and more
> standard.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/module_64: fix array_size.cocci warning
      https://git.kernel.org/powerpc/c/8a0edc72bec25fa62450bfef1a150483558e1289

cheers