diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 306d600..7a0d8ee 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -39,7 +39,7 @@
  * Returns the pointer to the new struct class device.
  */
 struct rtc_device *rtc_device_register(const char *name, struct device *dev,
-					struct rtc_class_ops *ops,
+					const struct rtc_class_ops *ops,
 					struct module *owner)
 {
 	struct rtc_device *rtc;
diff --git a/drivers/rtc/rtc-at91.c b/drivers/rtc/rtc-at91.c
index dfd0ce8..3cf3529 100644
--- a/drivers/rtc/rtc-at91.c
+++ b/drivers/rtc/rtc-at91.c
@@ -267,7 +267,7 @@
 	return IRQ_NONE;		/* not handled */
 }
 
-static struct rtc_class_ops at91_rtc_ops = {
+static const struct rtc_class_ops at91_rtc_ops = {
 	.ioctl		= at91_rtc_ioctl,
 	.read_time	= at91_rtc_readtime,
 	.set_time	= at91_rtc_settime,
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 629d47c..583789c 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -24,7 +24,7 @@
 	int err;
 	struct rtc_device *rtc = container_of(inode->i_cdev,
 					struct rtc_device, char_dev);
-	struct rtc_class_ops *ops = rtc->ops;
+	const struct rtc_class_ops *ops = rtc->ops;
 
 	/* We keep the lock as long as the device is in use
 	 * and return immediately if busy
@@ -209,7 +209,7 @@
 	int err = 0;
 	struct class_device *class_dev = file->private_data;
 	struct rtc_device *rtc = to_rtc_device(class_dev);
-	struct rtc_class_ops *ops = rtc->ops;
+	const struct rtc_class_ops *ops = rtc->ops;
 	struct rtc_time tm;
 	struct rtc_wkalrm alarm;
 	void __user *uarg = (void __user *) arg;
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index e8afb93..cc5032b 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -178,7 +178,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops ds13xx_rtc_ops = {
+static const struct rtc_class_ops ds13xx_rtc_ops = {
 	.read_time	= ds1307_get_time,
 	.set_time	= ds1307_set_time,
 };
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index 2090014..4fc9422 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -250,7 +250,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops ds1553_rtc_ops = {
+static const struct rtc_class_ops ds1553_rtc_ops = {
 	.read_time	= ds1553_rtc_read_time,
 	.set_time	= ds1553_rtc_set_time,
 	.read_alarm	= ds1553_rtc_read_alarm,
diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c
index 9be81fd..9c68ec9 100644
--- a/drivers/rtc/rtc-ds1672.c
+++ b/drivers/rtc/rtc-ds1672.c
@@ -156,7 +156,7 @@
 }
 static DEVICE_ATTR(control, S_IRUGO, show_control, NULL);
 
-static struct rtc_class_ops ds1672_rtc_ops = {
+static const struct rtc_class_ops ds1672_rtc_ops = {
 	.read_time	= ds1672_rtc_read_time,
 	.set_time	= ds1672_rtc_set_time,
 	.set_mmss	= ds1672_rtc_set_mmss,
diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index 8e47e5a..01da5ab 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -116,7 +116,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops ds1742_rtc_ops = {
+static const struct rtc_class_ops ds1742_rtc_ops = {
 	.read_time	= ds1742_rtc_read_time,
 	.set_time	= ds1742_rtc_set_time,
 };
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index e1a1169..ef4f147 100644
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -73,7 +73,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops ep93xx_rtc_ops = {
+static const struct rtc_class_ops ep93xx_rtc_ops = {
 	.read_time	= ep93xx_rtc_read_time,
 	.set_time	= ep93xx_rtc_set_time,
 	.set_mmss	= ep93xx_rtc_set_mmss,
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index f324d0a..1c74364 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -390,7 +390,7 @@
 	return isl1208_i2c_read_alarm(to_i2c_client(dev), alarm);
 }
 
-static struct rtc_class_ops isl1208_rtc_ops = {
+static const struct rtc_class_ops isl1208_rtc_ops = {
 	.proc		= isl1208_rtc_proc,
 	.read_time	= isl1208_rtc_read_time,
 	.set_time	= isl1208_rtc_set_time,
diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c
index 8c0d1a6..8ff4a12 100644
--- a/drivers/rtc/rtc-m48t86.c
+++ b/drivers/rtc/rtc-m48t86.c
@@ -138,7 +138,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops m48t86_rtc_ops = {
+static const struct rtc_class_ops m48t86_rtc_ops = {
 	.read_time	= m48t86_rtc_read_time,
 	.set_time	= m48t86_rtc_set_time,
 	.proc		= m48t86_rtc_proc,
diff --git a/drivers/rtc/rtc-max6902.c b/drivers/rtc/rtc-max6902.c
index 2c97395..9eeef96 100644
--- a/drivers/rtc/rtc-max6902.c
+++ b/drivers/rtc/rtc-max6902.c
@@ -207,7 +207,7 @@
 	return max6902_set_datetime(dev, tm);
 }
 
-static struct rtc_class_ops max6902_rtc_ops = {
+static const struct rtc_class_ops max6902_rtc_ops = {
 	.read_time	= max6902_read_time,
 	.set_time	= max6902_set_time,
 };
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index bd43106..a760cf6 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -227,7 +227,7 @@
 	return pcf8563_set_datetime(to_i2c_client(dev), tm);
 }
 
-static struct rtc_class_ops pcf8563_rtc_ops = {
+static const struct rtc_class_ops pcf8563_rtc_ops = {
 	.read_time	= pcf8563_rtc_read_time,
 	.set_time	= pcf8563_rtc_set_time,
 };
diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c
index b235a30..5875ebb 100644
--- a/drivers/rtc/rtc-pcf8583.c
+++ b/drivers/rtc/rtc-pcf8583.c
@@ -273,7 +273,7 @@
 	return ret;
 }
 
-static struct rtc_class_ops pcf8583_rtc_ops = {
+static const struct rtc_class_ops pcf8583_rtc_ops = {
 	.read_time	= pcf8583_rtc_read_time,
 	.set_time	= pcf8583_rtc_set_time,
 };
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index d6d1c57..739d1a6 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -128,7 +128,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops pl031_ops = {
+static const struct rtc_class_ops pl031_ops = {
 	.open = pl031_open,
 	.release = pl031_release,
 	.ioctl = pl031_ioctl,
diff --git a/drivers/rtc/rtc-proc.c b/drivers/rtc/rtc-proc.c
index 2943d83..d51d8f2 100644
--- a/drivers/rtc/rtc-proc.c
+++ b/drivers/rtc/rtc-proc.c
@@ -23,7 +23,7 @@
 {
 	int err;
 	struct class_device *class_dev = seq->private;
-	struct rtc_class_ops *ops = to_rtc_device(class_dev)->ops;
+	const struct rtc_class_ops *ops = to_rtc_device(class_dev)->ops;
 	struct rtc_wkalrm alrm;
 	struct rtc_time tm;
 
diff --git a/drivers/rtc/rtc-rs5c348.c b/drivers/rtc/rtc-rs5c348.c
index 2558906..f50f3fc 100644
--- a/drivers/rtc/rtc-rs5c348.c
+++ b/drivers/rtc/rtc-rs5c348.c
@@ -140,7 +140,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops rs5c348_rtc_ops = {
+static const struct rtc_class_ops rs5c348_rtc_ops = {
 	.read_time	= rs5c348_rtc_read_time,
 	.set_time	= rs5c348_rtc_set_time,
 };
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index 7553d79..bbdad09 100644
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -160,7 +160,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops rs5c372_rtc_ops = {
+static const struct rtc_class_ops rs5c372_rtc_ops = {
 	.proc		= rs5c372_rtc_proc,
 	.read_time	= rs5c372_rtc_read_time,
 	.set_time	= rs5c372_rtc_set_time,
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 2c7de79..625dad2 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -386,7 +386,7 @@
 	free_irq(s3c_rtc_tickno, rtc_dev);
 }
 
-static struct rtc_class_ops s3c_rtcops = {
+static const struct rtc_class_ops s3c_rtcops = {
 	.open		= s3c_rtc_open,
 	.release	= s3c_rtc_release,
 	.ioctl		= s3c_rtc_ioctl,
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index ee4b61e..439c41a 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -303,7 +303,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops sa1100_rtc_ops = {
+static const struct rtc_class_ops sa1100_rtc_ops = {
 	.open = sa1100_rtc_open,
 	.read_callback = sa1100_rtc_read_callback,
 	.release = sa1100_rtc_release,
diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c
index e1fa5fe..bc4bd24 100644
--- a/drivers/rtc/rtc-test.c
+++ b/drivers/rtc/rtc-test.c
@@ -75,7 +75,7 @@
 	}
 }
 
-static struct rtc_class_ops test_rtc_ops = {
+static const struct rtc_class_ops test_rtc_ops = {
 	.proc = test_rtc_proc,
 	.read_time = test_rtc_read_time,
 	.set_time = test_rtc_set_time,
diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c
index e28cc4b..09b714f 100644
--- a/drivers/rtc/rtc-v3020.c
+++ b/drivers/rtc/rtc-v3020.c
@@ -149,7 +149,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops v3020_rtc_ops = {
+static const struct rtc_class_ops v3020_rtc_ops = {
 	.read_time	= v3020_read_time,
 	.set_time	= v3020_set_time,
 };
diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index 596764f..58e5ed0 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -296,7 +296,7 @@
 	return IRQ_HANDLED;
 }
 
-static struct rtc_class_ops vr41xx_rtc_ops = {
+static const struct rtc_class_ops vr41xx_rtc_ops = {
 	.release	= vr41xx_rtc_release,
 	.ioctl		= vr41xx_rtc_ioctl,
 	.read_time	= vr41xx_rtc_read_time,
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index 788b6d1..522c697 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -460,7 +460,7 @@
 	return 0;
 }
 
-static struct rtc_class_ops x1205_rtc_ops = {
+static const struct rtc_class_ops x1205_rtc_ops = {
 	.proc		= x1205_rtc_proc,
 	.read_time	= x1205_rtc_read_time,
 	.set_time	= x1205_rtc_set_time,