linux-kernel - [PATCH 4/4] tty: mux: constify parisc_device

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Date:   Sat, 19 Aug 2017 23:24:56 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     jejb@...ux.vnet.ibm.com, martin.petersen@...cle.com, deller@....de,
        gregkh@...uxfoundation.org, jslaby@...e.com
Cc:     linux-kernel@...r.kernel.org, linux-parisc@...r.kernel.org,
        linux-serial@...r.kernel.org
Subject: [PATCH 4/4] tty: mux: constify parisc_device_id

parisc_device_id are not supposed to change at runtime. All functions
working with parisc_device_id provided by <asm/parisc-device.h> work
with const parisc_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/tty/serial/mux.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index 8a4be4b..6afe83d 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -536,13 +536,13 @@ static int mux_remove(struct parisc_device *dev)
  * This table only contains the parisc_device_id of known builtin mux
  * devices.  All other mux cards will be detected by the generic mux_tbl.
  */
-static struct parisc_device_id builtin_mux_tbl[] = {
+static const struct parisc_device_id builtin_mux_tbl[] = {
 	{ HPHW_A_DIRECT, HVERSION_REV_ANY_ID, 0x15, 0x0000D }, /* All K-class */
 	{ HPHW_A_DIRECT, HVERSION_REV_ANY_ID, 0x44, 0x0000D }, /* E35, E45, and E55 */
 	{ 0, }
 };
 
-static struct parisc_device_id mux_tbl[] = {
+static const struct parisc_device_id mux_tbl[] = {
 	{ HPHW_A_DIRECT, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0000D },
 	{ 0, }
 };
-- 
2.7.4