linux-kernel - [PATCH 02/15] ALSA: es18xx: constify pnp_device_id and pnp_card_device

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Date:   Thu, 17 Aug 2017 15:36:17 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     perex@...ex.cz, tiwai@...e.com, dhowells@...hat.com
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH 02/15] ALSA: es18xx: constify pnp_device_id and pnp_card_device_id

*_device_id are not supposed to change at runtime. All functions
working with *_device_id provided by <linux/pnp.h> work with
const *_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 sound/isa/es18xx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/isa/es18xx.c b/sound/isa/es18xx.c
index ae17a65..5d4a30a 100644
--- a/sound/isa/es18xx.c
+++ b/sound/isa/es18xx.c
@@ -2017,7 +2017,7 @@ static int isa_registered;
 static int pnp_registered;
 static int pnpc_registered;
 
-static struct pnp_device_id snd_audiodrive_pnpbiosids[] = {
+static const struct pnp_device_id snd_audiodrive_pnpbiosids[] = {
 	{ .id = "ESS1869" },
 	{ .id = "ESS1879" },
 	{ .id = "" }		/* end */
@@ -2062,7 +2062,7 @@ static int snd_audiodrive_pnp(int dev, struct snd_es18xx *chip,
 	return 0;
 }
 
-static struct pnp_card_device_id snd_audiodrive_pnpids[] = {
+static const struct pnp_card_device_id snd_audiodrive_pnpids[] = {
 	/* ESS 1868 (integrated on Compaq dual P-Pro motherboard and Genius 18PnP 3D) */
 	{ .id = "ESS1868", .devs = { { "ESS1868" }, { "ESS0000" } } },
 	/* ESS 1868 (integrated on Maxisound Cards) */
-- 
2.7.4