ALSA: i2c: constify snd_i2c_ops structures

---
 include/sound/i2c.h       | 2 +-
 sound/i2c/i2c.c           | 2 +-
 sound/pci/ice1712/delta.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
 
diff --git a/include/sound/i2c.h b/include/sound/i2c.h
index d125ff8..835254d 100644
--- a/include/sound/i2c.h
+++ b/include/sound/i2c.h
@@ -66,7 +66,7 @@ struct snd_i2c_bus {
 		struct snd_i2c_bit_ops *bit;
 		void *ops;
 	} hw_ops;		/* lowlevel operations */
-	struct snd_i2c_ops *ops;	/* midlevel operations */
+	const struct snd_i2c_ops *ops;	/* midlevel operations */
 
 	unsigned long private_value;
 	void *private_data;
diff --git a/sound/i2c/i2c.c b/sound/i2c/i2c.c
index 4677037..ef2a9af 100644
--- a/sound/i2c/i2c.c
+++ b/sound/i2c/i2c.c
@@ -39,7 +39,7 @@ static int snd_i2c_bit_readbytes(struct snd_i2c_device *device,
 static int snd_i2c_bit_probeaddr(struct snd_i2c_bus *bus,
 				 unsigned short addr);
 
-static struct snd_i2c_ops snd_i2c_bit_ops = {
+static const struct snd_i2c_ops snd_i2c_bit_ops = {
 	.sendbytes = snd_i2c_bit_sendbytes,
 	.readbytes = snd_i2c_bit_readbytes,
 	.probeaddr = snd_i2c_bit_probeaddr,
diff --git a/sound/pci/ice1712/delta.c b/sound/pci/ice1712/delta.c
index 496dbd0..3bfdc78 100644
--- a/sound/pci/ice1712/delta.c
+++ b/sound/pci/ice1712/delta.c
@@ -174,7 +174,7 @@ static int ap_cs8427_probeaddr(struct snd_i2c_bus *bus, unsigned short addr)
 	return -ENOENT;
 }
 
-static struct snd_i2c_ops ap_cs8427_i2c_ops = {
+static const struct snd_i2c_ops ap_cs8427_i2c_ops = {
 	.sendbytes = ap_cs8427_sendbytes,
 	.readbytes = ap_cs8427_readbytes,
 	.probeaddr = ap_cs8427_probeaddr,