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PM: Make wakeup flags available whenever CONFIG_PM is set 

The various wakeup flags and their accessor macros in struct
dev_pm_info should be available whenever CONFIG_PM is enabled, not
just when CONFIG_PM_SLEEP is on.  Otherwise remote wakeup won't always
be configurable for runtime power management.  This patch (as1056b)
fixes the oversight.

David Brownell adds:
	More accurately, fixes the "regression" ... as noted sometime
	last summer, after 296699de6b
	introduced CONFIG_SUSPEND.  But that didn't make the regression
	list for that kernel, ergo the delay in fixing it.

[rjw: rebased]

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2008-03-19 22:37:42 +01:00 committed by Greg Kroah-Hartman
parent 74081f8667
commit d288e47c47
3 changed files with 23 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/base/power/main.c
View File

@ -57,8 +57,6 @@ static DEFINE_MUTEX(dpm_list_mtx);
/* 'true' if all devices have been suspended, protected by dpm_list_mtx */
static bool all_sleeping;
int (*platform_enable_wakeup)(struct device *dev, int is_on);
/**
* device_pm_add - add a device to the list of active devices
* @dev: Device to be added to the list

2
drivers/base/power/sysfs.c
View File

@ -6,6 +6,8 @@
#include <linux/string.h>
#include "power.h"
int (*platform_enable_wakeup)(struct device *dev, int is_on);
/*
* wakeup - Report/change current wakeup option for device

36
include/linux/pm.h
View File

@ -183,9 +183,9 @@ typedef struct pm_message {
struct dev_pm_info {
pm_message_t power_state;
unsigned can_wakeup:1;
unsigned should_wakeup:1;
bool sleeping:1; /* Owned by the PM core */
#ifdef CONFIG_PM_SLEEP
unsigned should_wakeup:1;
struct list_head entry;
#endif
};
@ -198,11 +198,6 @@ extern void device_resume(void);
extern int device_suspend(pm_message_t state);
extern int device_prepare_suspend(pm_message_t state);
#define device_set_wakeup_enable(dev,val) \
((dev)->power.should_wakeup = !!(val))
#define device_may_wakeup(dev) \
(device_can_wakeup(dev) && (dev)->power.should_wakeup)
extern void __suspend_report_result(const char *function, void *fn, int ret);
#define suspend_report_result(fn, ret) \
@ -210,6 +205,24 @@ extern void __suspend_report_result(const char *function, void *fn, int ret);
__suspend_report_result(__FUNCTION__, fn, ret); \
} while (0)
#else /* !CONFIG_PM_SLEEP */
static inline int device_suspend(pm_message_t state)
{
return 0;
}
#define suspend_report_result(fn, ret) do { } while (0)
#endif /* !CONFIG_PM_SLEEP */
#ifdef CONFIG_PM
#define device_set_wakeup_enable(dev,val) \
((dev)->power.should_wakeup = !!(val))
#define device_may_wakeup(dev) \
(device_can_wakeup(dev) && (dev)->power.should_wakeup)
/*
* Platform hook to activate device wakeup capability, if that's not already
* handled by enable_irq_wake() etc.
@ -224,24 +237,17 @@ static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
return 0;
}
#else /* !CONFIG_PM_SLEEP */
static inline int device_suspend(pm_message_t state)
{
return 0;
}
#else /* !CONFIG_PM */
#define device_set_wakeup_enable(dev,val) do{}while(0)
#define device_may_wakeup(dev) (0)
#define suspend_report_result(fn, ret) do { } while (0)
static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
{
return 0;
}
#endif /* !CONFIG_PM_SLEEP */
#endif /* !CONFIG_PM */
/* changes to device_may_wakeup take effect on the next pm state change.
* by default, devices should wakeup if they can.