linux-kernel - [PATCH] thunderbolt: constify attribute

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Date:   Fri, 4 Aug 2017 21:42:09 -0400
From:   Amitoj Kaur Chawla <amitoj1606@...il.com>
To:     andreas.noever@...il.com, michael.jamet@...el.com,
        mika.westerberg@...ux.intel.com, yehezkel.bernat@...el.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH] thunderbolt: constify attribute_group structure

Functions working with attribute_groups provided by <linux/device.h>
work with const attribute_group. These attribute_group structures do not
change at runtime so mark them as const.

File size before:
 text      data     bss     dec     hex filename
 28565     7300       0   35865    8c19 drivers/thunderbolt/switch.o

File size after:
 text      data     bss     dec     hex filename
 28661     7204       0   35865    8c19 drivers/thunderbolt/switch.o

This change was made with the help of Coccinelle.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@...il.com>
---
 drivers/thunderbolt/switch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index e9391bb..6cd4f14 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -970,7 +970,7 @@ static umode_t switch_attr_is_visible(struct kobject *kobj,
 	return sw->safe_mode ? 0 : attr->mode;
 }
 
-static struct attribute_group switch_group = {
+static const struct attribute_group switch_group = {
 	.is_visible = switch_attr_is_visible,
 	.attrs = switch_attrs,
 };
-- 
2.7.4