ALSA: drivers: mpu401: constify pnp_device_id

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

Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>

diff --git a/sound/drivers/mpu401/mpu401.c b/sound/drivers/mpu401/mpu401.c
index 9b86e00d7d95ffada3ac89b52671be20a2d30d38..b6715764cd1c3a3e30536ac57d46d560d369849b 100644 (file)
--- a/sound/drivers/mpu401/mpu401.c
+++ b/sound/drivers/mpu401/mpu401.c
@@ -148,7 +148,7 @@ static struct platform_driver snd_mpu401_driver = {
 
 #define IO_EXTENT 2
 
-static struct pnp_device_id snd_mpu401_pnpids[] = {
+static const struct pnp_device_id snd_mpu401_pnpids[] = {
        { .id = "PNPb006" },
        { .id = "" }
 };