linux-kernel - [PATCH] iio: Declare event_attrs field of iio

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Date:   Sat,  1 Oct 2016 15:27:18 +0530
From:   Bhumika Goyal <bhumirks@...il.com>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Bhumika Goyal <bhumirks@...il.com>
Subject: [PATCH] iio: Declare event_attrs field of iio_info structure as const

The event_attrs field of iio_info structure is only initialized once
whenever an object of iio_info is created. After that this field
is never modified again anywhere in the kernel. So, declare event_attrs
field of iio_info as a const struct attribute_group.
Checked for occurences throughout the kernel using grep and
coccinelle.

Signed-off-by: Bhumika Goyal <bhumirks@...il.com>
---
 include/linux/iio/iio.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index b4a0679..4591d8e 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -381,7 +381,7 @@ struct iio_dev;
  **/
 struct iio_info {
 	struct module			*driver_module;
-	struct attribute_group		*event_attrs;
+	const struct attribute_group	*event_attrs;
 	const struct attribute_group	*attrs;
 
 	int (*read_raw)(struct iio_dev *indio_dev,
-- 
1.9.1