linux-kernel - [PATCH v2 02/10] net: can: at91_can: constify attribute

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Date:   Tue, 11 Jul 2017 12:59:17 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     davem@...emloft.net, wg@...ndegger.com, mkl@...gutronix.de
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 02/10] net: can: at91_can: constify attribute_group structures.

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

File size before:
   text	   data	    bss	    dec	    hex	filename
   6164	    304	      0	   6468	   1944	drivers/net/can/at91_can.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   6228	    240	      0	   6468	   1944	drivers/net/can/at91_can.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
Changes in v2:
              Added cover later.

 drivers/net/can/at91_can.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index 0e0df0b..f37ce0e 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -1232,7 +1232,7 @@ static DEVICE_ATTR(mb0_id, S_IWUSR | S_IRUGO,
 	NULL,
 };

-static struct attribute_group at91_sysfs_attr_group = {
+static const struct attribute_group at91_sysfs_attr_group = {
 	.attrs = at91_sysfs_attrs,
 };

-- 
1.9.1