[PATCH] staging: fbtft: Use ARRAY_SIZE() to get argument count

Deepak R Varma
2022-10-28T13:30:13Z

The ARRAY_SIZE(foo) macro should be preferred over sizeof operator
based computation such as sizeof(foo)/sizeof(foo[0]) for finding
number of elements in an array. Issue identified using coccicheck.

Signed-off-by: Deepak R Varma <drv@mailo.com>
---
drivers/staging/fbtft/fbtft.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index 2c2b5f1c1df3..5506a473be91 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -231,7 +231,7 @@ struct fbtft_par {
bool polarity;
};

-#define NUMARGS(...) (sizeof((int[]){__VA_ARGS__}) / sizeof(int))
+#define NUMARGS(...) ARRAY_SIZE(((int[]){ __VA_ARGS__ }))

#define write_reg(par, ...) \
((par)->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__))
--
2.34.1