linux-kernel - [PATCH 1/8] s390: zcrypt_queue: constify attribute

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Message-Id: <1500448157-24668-2-git-send-email-arvind.yadav.cs@gmail.com>
Date:   Wed, 19 Jul 2017 12:39:10 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     schwidefsky@...ibm.com, freude@...ibm.com,
        heiko.carstens@...ibm.com, linux-s390@...r.kernel.org,
        sth@...ux.vnet.ibm.com, hoeppner@...ux.vnet.ibm.com,
        sebott@...ux.vnet.ibm.com, oberpar@...ux.vnet.ibm.com,
        wi@...ux.vnet.ibm.com, ubraun@...ux.vnet.ibm.com,
        jwi@...ux.vnet.ibm.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 1/8] s390: zcrypt_queue: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group 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
   1361	     96	      0	   1457	    5b1	s390/crypto/zcrypt_queue.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   1425	     32	      0	   1457	    5b1	s390/crypto/zcrypt_queue.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/s390/crypto/zcrypt_queue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/crypto/zcrypt_queue.c b/drivers/s390/crypto/zcrypt_queue.c
index a303f3b..4742be0 100644
--- a/drivers/s390/crypto/zcrypt_queue.c
+++ b/drivers/s390/crypto/zcrypt_queue.c
@@ -89,7 +89,7 @@ static DEVICE_ATTR(online, 0644, zcrypt_queue_online_show,
 	NULL,
 };
 
-static struct attribute_group zcrypt_queue_attr_group = {
+static const struct attribute_group zcrypt_queue_attr_group = {
 	.attrs = zcrypt_queue_attrs,
 };
 
-- 
1.9.1