diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 722d683e0b0f..47c4aeed5106 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -453,7 +453,7 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc)
 
 	rtc_proc_add_device(rtc);
 
-	rtc_nvmem_register(rtc);
+	rtc_nvmem_register(rtc, rtc->nvmem_config);
 
 	rtc->registered = true;
 	dev_info(rtc->dev.parent, "registered as %s\n",
diff --git a/drivers/rtc/nvmem.c b/drivers/rtc/nvmem.c
index 8567b4ed9ac6..0a3522bcdd25 100644
--- a/drivers/rtc/nvmem.c
+++ b/drivers/rtc/nvmem.c
@@ -46,7 +46,7 @@ rtc_nvram_write(struct file *filp, struct kobject *kobj,
 	return nvmem_device_write(rtc->nvmem, off, count, buf);
 }
 
-static int rtc_nvram_register(struct rtc_device *rtc)
+static int rtc_nvram_register(struct rtc_device *rtc, size_t size)
 {
 	int err;
 
@@ -64,7 +64,7 @@ static int rtc_nvram_register(struct rtc_device *rtc)
 
 	rtc->nvram->read = rtc_nvram_read;
 	rtc->nvram->write = rtc_nvram_write;
-	rtc->nvram->size = rtc->nvmem_config->size;
+	rtc->nvram->size = size;
 
 	err = sysfs_create_bin_file(&rtc->dev.parent->kobj,
 				    rtc->nvram);
@@ -84,20 +84,21 @@ static void rtc_nvram_unregister(struct rtc_device *rtc)
 /*
  * New ABI, uses nvmem
  */
-void rtc_nvmem_register(struct rtc_device *rtc)
+void rtc_nvmem_register(struct rtc_device *rtc,
+			struct nvmem_config *nvmem_config)
 {
-	if (!rtc->nvmem_config)
+	if (!nvmem_config)
 		return;
 
-	rtc->nvmem_config->dev = &rtc->dev;
-	rtc->nvmem_config->owner = rtc->owner;
-	rtc->nvmem = nvmem_register(rtc->nvmem_config);
+	nvmem_config->dev = &rtc->dev;
+	nvmem_config->owner = rtc->owner;
+	rtc->nvmem = nvmem_register(nvmem_config);
 	if (IS_ERR_OR_NULL(rtc->nvmem))
 		return;
 
 	/* Register the old ABI */
 	if (rtc->nvram_old_abi)
-		rtc_nvram_register(rtc);
+		rtc_nvram_register(rtc, nvmem_config->size);
 }
 
 void rtc_nvmem_unregister(struct rtc_device *rtc)
diff --git a/drivers/rtc/rtc-core.h b/drivers/rtc/rtc-core.h
index 513b9bedd2c8..5f60e3b11cde 100644
--- a/drivers/rtc/rtc-core.h
+++ b/drivers/rtc/rtc-core.h
@@ -48,9 +48,11 @@ static inline const struct attribute_group **rtc_get_dev_attribute_groups(void)
 #endif
 
 #ifdef CONFIG_RTC_NVMEM
-void rtc_nvmem_register(struct rtc_device *rtc);
+void rtc_nvmem_register(struct rtc_device *rtc,
+			struct nvmem_config *nvmem_config);
 void rtc_nvmem_unregister(struct rtc_device *rtc);
 #else
-static inline void rtc_nvmem_register(struct rtc_device *rtc) {}
+static inline void rtc_nvmem_register(struct rtc_device *rtc,
+				      struct nvmem_config *nvmem_config) {}
 static inline void rtc_nvmem_unregister(struct rtc_device *rtc) {}
 #endif