linux-kernel - [PATCH 2/7] platform/x86: compal-laptop: constify attribute

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Date:   Tue, 11 Jul 2017 16:18:15 +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 2/7] platform/x86: compal-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
   6781	   6144	     34	  12959	   329f	drivers/platform/x86/compal-laptop.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   6845	   6080	     34	  12959	   329f	drivers/platform/x86/compal-laptop.o

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

diff --git a/drivers/platform/x86/compal-laptop.c b/drivers/platform/x86/compal-laptop.c
index e1c2b6d..a8e4a53 100644
--- a/drivers/platform/x86/compal-laptop.c
+++ b/drivers/platform/x86/compal-laptop.c
@@ -718,7 +718,7 @@ static DEVICE_ATTR(pwm1_enable,
 	&dev_attr_wake_up_mouse.attr,
 	NULL
 };
-static struct attribute_group compal_platform_attr_group = {
+static const struct attribute_group compal_platform_attr_group = {
 	.attrs = compal_platform_attrs
 };
 
-- 
1.9.1