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[PATCH] swsusp: switch pm_message_t to struct

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This adds type-checking to pm_message_t, so that people can't confuse it
with int or u32.  It also allows us to fix "disk yoyo" during suspend (disk
spinning down/up/down).

[We've tried that before; since that cpufreq problems were fixed and I've
tried make allyes config and fixed resulting damage.]

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Pavel Machek
2005-09-03 15:56:57 -07:00
committed by Linus Torvalds
parent 829ca9a30a
commit ca078bae81
28 changed files with 108 additions and 101 deletions
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14
include/linux/pm.h
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@ -186,7 +186,9 @@ extern int pm_suspend(suspend_state_t state);
struct device;
typedef u32 __bitwise pm_message_t;
typedef struct pm_message {
int event;
} pm_message_t;
/*
* There are 4 important states driver can be in:
@ -207,9 +209,13 @@ typedef u32 __bitwise pm_message_t;
* or something similar soon.
*/
#define PMSG_FREEZE ((__force pm_message_t) 3)
#define PMSG_SUSPEND ((__force pm_message_t) 3)
#define PMSG_ON ((__force pm_message_t) 0)
#define PM_EVENT_ON 0
#define PM_EVENT_FREEZE 1
#define PM_EVENT_SUSPEND 2
#define PMSG_FREEZE ((struct pm_message){ .event = PM_EVENT_FREEZE, })
#define PMSG_SUSPEND ((struct pm_message){ .event = PM_EVENT_SUSPEND, })
#define PMSG_ON ((struct pm_message){ .event = PM_EVENT_ON, })
struct dev_pm_info {
pm_message_t power_state;