linux-kernel - [PATCH 3/3] tools: iio: Add ARRAY

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Date:	Mon, 13 Jul 2015 16:20:11 +0300
From:	Cristina Opriceana <cristina.opriceana@...il.com>
To:	jic23@...nel.org
Cc:	knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	daniel.baluta@...el.com, octavian.purdila@...el.com
Subject: [PATCH 3/3] tools: iio: Add ARRAY_SIZE macro

Calculation of the length of an array can be done with the ARRAY_SIZE
macro to make code more abstract and remove the associated
checkpatch.pl warning.

Signed-off-by: Cristina Opriceana <cristina.opriceana@...il.com>
---
 tools/iio/iio_utils.c | 2 +-
 tools/iio/iio_utils.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
index 4a7e480..e177f40 100644
--- a/tools/iio/iio_utils.c
+++ b/tools/iio/iio_utils.c
@@ -39,7 +39,7 @@ int iioutils_break_up_name(const char *full_name, char **generic_name)
 	char *working, *prefix = "";
 	int i, ret;
 
-	for (i = 0; i < sizeof(iio_direction) / sizeof(iio_direction[0]); i++)
+	for (i = 0; i < ARRAY_SIZE(iio_direction); i++)
 		if (!strncmp(full_name, iio_direction[i],
 			     strlen(iio_direction[i]))) {
 			prefix = iio_direction[i];
diff --git a/tools/iio/iio_utils.h b/tools/iio/iio_utils.h
index 0866101..f30a109 100644
--- a/tools/iio/iio_utils.h
+++ b/tools/iio/iio_utils.h
@@ -18,6 +18,8 @@
 #define FORMAT_SCAN_ELEMENTS_DIR "%s/scan_elements"
 #define FORMAT_TYPE_FILE "%s_type"
 
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
+
 extern const char *iio_dir;
 
 /**
-- 
1.9.1

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