linux-kernel - [PATCH] Bluetooth: 6lowpan: Make variable header

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Message-Id: <20190815055255.1153-1-nishkadg.linux@gmail.com>
Date:   Thu, 15 Aug 2019 11:22:55 +0530
From:   Nishka Dasgupta <nishkadg.linux@...il.com>
To:     marcel@...tmann.org, johan.hedberg@...il.com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        davem@...emloft.net, netdev@...r.kernel.org
Cc:     Nishka Dasgupta <nishkadg.linux@...il.com>
Subject: [PATCH] Bluetooth: 6lowpan: Make variable header_ops constant

Static variable header_ops, of type header_ops, is used only once, when
it is assigned to field header_ops of a variable having type net_device.
This corresponding field is declared as const in the definition of
net_device. Hence make header_ops constant as well to protect it from
unnecessary modification.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@...il.com>
---
 net/bluetooth/6lowpan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 9d41de1ec90f..bb55d92691b0 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -583,7 +583,7 @@ static const struct net_device_ops netdev_ops = {
 	.ndo_start_xmit		= bt_xmit,
 };
 
-static struct header_ops header_ops = {
+static const struct header_ops header_ops = {
 	.create	= header_create,
 };
 
-- 
2.19.1