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Subject[PATCH v3] rtc-cmos: fix suspend/resume
Date
From: Paul Fox <pgf@laptop.org>

rtc-cmos was setting suspend/resume hooks at the device_driver level.
However, the platform bus code (drivers/base/platform.c) only looks
for resume hooks at the dev_pm_ops level, or within the platform_driver.

Switch rtc_cmos to use dev_pm_ops so that suspend/resume code is
executed again.

Signed-off-by: Paul Fox <pgf@laptop.org>
Signed-off-by: Daniel Drake <dsd@laptop.org>
---
drivers/rtc/rtc-cmos.c | 16 +++++++++-------
1 files changed, 9 insertions(+), 7 deletions(-)

v2: incorporate feedback from Rafael J. Wysocki, fix tabs, make a bit more
consistent with typical SIMPLE_DEV_PM_OPS users.

v3: remove const keyword already set by macro, thanks to Rafael

diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 5856167..dd8242d 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -36,6 +36,7 @@
#include <linux/platform_device.h>
#include <linux/mod_devicetable.h>
#include <linux/log2.h>
+#include <linux/pm.h>

/* this is for "generic access to PC-style RTC" using CMOS_READ/CMOS_WRITE */
#include <asm-generic/rtc.h>
@@ -850,7 +851,7 @@ static void __exit cmos_do_remove(struct device *dev)

#ifdef CONFIG_PM

-static int cmos_suspend(struct device *dev, pm_message_t mesg)
+static int cmos_suspend(struct device *dev)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
unsigned char tmp;
@@ -898,7 +899,7 @@ static int cmos_suspend(struct device *dev, pm_message_t mesg)
*/
static inline int cmos_poweroff(struct device *dev)
{
- return cmos_suspend(dev, PMSG_HIBERNATE);
+ return cmos_suspend(dev);
}

static int cmos_resume(struct device *dev)
@@ -945,9 +946,9 @@ static int cmos_resume(struct device *dev)
return 0;
}

+static SIMPLE_DEV_PM_OPS(cmos_pm_ops, cmos_suspend, cmos_resume);
+
#else
-#define cmos_suspend NULL
-#define cmos_resume NULL

static inline int cmos_poweroff(struct device *dev)
{
@@ -1077,7 +1078,7 @@ static void __exit cmos_pnp_remove(struct pnp_dev *pnp)

static int cmos_pnp_suspend(struct pnp_dev *pnp, pm_message_t mesg)
{
- return cmos_suspend(&pnp->dev, mesg);
+ return cmos_suspend(&pnp->dev);
}

static int cmos_pnp_resume(struct pnp_dev *pnp)
@@ -1157,8 +1158,9 @@ static struct platform_driver cmos_platform_driver = {
.shutdown = cmos_platform_shutdown,
.driver = {
.name = (char *) driver_name,
- .suspend = cmos_suspend,
- .resume = cmos_resume,
+#ifdef CONFIG_PM
+ .pm = &cmos_pm_ops,
+#endif
}
};

--
1.7.3.3


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