Messages in this thread |  | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH] rtc-cmos: fix suspend/resume | Date | Thu, 16 Dec 2010 22:08:19 +0100 |
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On Thursday, December 16, 2010, Rafael J. Wysocki wrote: > On Thursday, December 16, 2010, Daniel Drake wrote: > > 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 | 14 +++++++++----- > > 1 files changed, 9 insertions(+), 5 deletions(-) > > > > diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c > > index 5856167..dfa5547 100644 > > --- a/drivers/rtc/rtc-cmos.c > > +++ b/drivers/rtc/rtc-cmos.c > > @@ -850,7 +850,7 @@ 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 +898,7 @@ 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) > > @@ -1077,7 +1077,7 @@ 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) > > @@ -1152,13 +1152,17 @@ static void cmos_platform_shutdown(struct platform_device *pdev) > > /* work with hotplug and coldplug */ > > MODULE_ALIAS("platform:rtc_cmos"); > > > > +static struct dev_pm_ops cmos_pm_ops = { > > + .suspend = cmos_suspend, > > + .resume = cmos_resume, > > +}; > > That's not enough. Please also specify hibernation callbacks as documented > in Documentation/power/devices.txt (they can point to the same routines as the > suspend/resume ones).
You can use the SIMPLE_DEV_PM_OPS() macro (defined in include/linux/pm.h) for this purpose.
Thanks, Rafael
> > + > > static struct platform_driver cmos_platform_driver = { > > .remove = __exit_p(cmos_platform_remove), > > .shutdown = cmos_platform_shutdown, > > .driver = { > > .name = (char *) driver_name, > > - .suspend = cmos_suspend, > > - .resume = cmos_resume, > > + .pm = &cmos_pm_ops, > > } > > }; > > > > > >
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