linux-kernel - [PATCH] Bluetooth: hci_qca: Make structure qca

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Date:   Thu, 15 Aug 2019 11:21:49 +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
Cc:     Nishka Dasgupta <nishkadg.linux@...il.com>
Subject: [PATCH] Bluetooth: hci_qca: Make structure qca_proto constant

Static structure qca_proto, of type hci_uart_proto, is used four times:
as the last argument in function hci_uart_register_device(), and as the
only argument to functions hci_uart_register_proto() and
hci_uart_unregister_proto(). In all three of these functions, the
parameter corresponding to qca_proto is declared as constant. Therefore,
make qca_proto itself constant as well in order to protect it from
unintended modification.
Issue found with Coccinelle.

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

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 82a0a3691a63..80923fc9418f 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1326,7 +1326,7 @@ static int qca_setup(struct hci_uart *hu)
 	return ret;
 }

-static struct hci_uart_proto qca_proto = {
+static const struct hci_uart_proto qca_proto = {
 	.id		= HCI_UART_QCA,
 	.name		= "QCA",
 	.manufacturer	= 29,
-- 
2.19.1