linux-kernel - [PATCH 1/7] platform/x86: fujitsu-laptop: constify attribute

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Message-Id: <1499770100-18632-2-git-send-email-arvind.yadav.cs@gmail.com>
Date:   Tue, 11 Jul 2017 16:18:14 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     dvhart@...radead.org, andy@...radead.org, jwoithe@...t42.net,
        cezary.jackiewicz@...il.com, corentin.chary@...il.com,
        laforge@...monks.org, coproscefalo@...il.com
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/7] platform/x86: fujitsu-laptop: constify attribute_group structures.

attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   7474	   1205	     24	   8703	   21ff	drivers/platform/x86/fujitsu-laptop.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   7538	   1141	     24	   8703	   21ff	drivers/platform/x86/fujitsu-laptop.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/platform/x86/fujitsu-laptop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index c1a8528..7973342 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -317,7 +317,7 @@ static ssize_t radios_show(struct device *dev, struct device_attribute *attr,
 	NULL
 };
 
-static struct attribute_group fujitsu_pf_attribute_group = {
+static const struct attribute_group fujitsu_pf_attribute_group = {
 	.attrs = fujitsu_pf_attributes
 };
 
-- 
1.9.1