linux-kernel - [PATCH] input: synaptics-rmi4: constify attribute

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Message-Id: <83ad64e25236b6ecba3666c21f74f2fe196a0a39.1499250094.git.arvind.yadav.cs@gmail.com>
Date:   Wed,  5 Jul 2017 15:54:00 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     dmitry.torokhov@...il.com, benjamin.tissoires@...hat.com
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] input: synaptics-rmi4: 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
   5287	    448	      0	   5735	   1667	drivers/input/rmi4/rmi_f34.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   5339	    384	      0	   5723	   165b	drivers/input/rmi4/rmi_f34.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/input/rmi4/rmi_f34.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/rmi4/rmi_f34.c b/drivers/input/rmi4/rmi_f34.c
index b8ee78e..4cfe970 100644
--- a/drivers/input/rmi4/rmi_f34.c
+++ b/drivers/input/rmi4/rmi_f34.c
@@ -516,7 +516,7 @@ static DEVICE_ATTR(update_fw_status, 0444,
 	NULL
 };

-static struct attribute_group rmi_firmware_attr_group = {
+static const struct attribute_group rmi_firmware_attr_group = {
 	.attrs = rmi_firmware_attrs,
 };

-- 
1.9.1