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Misc: Add possibility to remove misc devices during suspend/resume

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Make it possible to unregister a misc device object in a safe way during a
suspend/resume cycle.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rafael J. Wysocki 2008-02-04 22:30:11 -08:00 • committed by Linus Torvalds
parent f011e2e2df
commit 533354d4ac
2 changed files with 18 additions and 5 deletions
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10
include/linux/miscdevice.h
View file

@ -43,7 +43,15 @@ struct miscdevice {
};
extern int misc_register(struct miscdevice * misc);
extern int misc_deregister(struct miscdevice * misc);
extern int __misc_deregister(struct miscdevice *misc, bool suspended);
static inline int misc_deregister(struct miscdevice *misc)
{
return __misc_deregister(misc, false);
}
static inline int misc_deregister_suspended(struct miscdevice *misc)
{
return __misc_deregister(misc, true);
}
#define MODULE_ALIAS_MISCDEV(minor) \
MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR) \