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path: root/drivers/rtc/class.c
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Diffstat (limited to 'drivers/rtc/class.c')
-rw-r--r--drivers/rtc/class.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 5143629dedbd..9b742d3ffb94 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -11,6 +11,8 @@
* published by the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/kdev_t.h>
@@ -50,6 +52,10 @@ static int rtc_suspend(struct device *dev, pm_message_t mesg)
struct rtc_device *rtc = to_rtc_device(dev);
struct rtc_time tm;
struct timespec delta, delta_delta;
+
+ if (has_persistent_clock())
+ return 0;
+
if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0)
return 0;
@@ -88,6 +94,9 @@ static int rtc_resume(struct device *dev)
struct timespec new_system, new_rtc;
struct timespec sleep_time;
+ if (has_persistent_clock())
+ return 0;
+
rtc_hctosys_ret = -ENODEV;
if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0)
return 0;
@@ -254,7 +263,7 @@ static int __init rtc_init(void)
{
rtc_class = class_create(THIS_MODULE, "rtc");
if (IS_ERR(rtc_class)) {
- printk(KERN_ERR "%s: couldn't create class\n", __FILE__);
+ pr_err("couldn't create class\n");
return PTR_ERR(rtc_class);
}
rtc_class->suspend = rtc_suspend;