From 1bfcf1304ea79c46efc3724e548b13b4b442b418 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 15 Oct 2008 22:01:21 -0700 Subject: pm: rework disabling of user mode helpers during suspend/hibernation We currently use a PM notifier to disable user mode helpers before suspend and hibernation and to re-enable them during resume. However, this is not an ideal solution, because if any drivers want to upload firmware into memory before suspend, they have to use a PM notifier for this purpose and there is no guarantee that the ordering of PM notifiers will be as expected (ie. the notifier that disables user mode helpers has to be run after the driver's notifier used for uploading the firmware). For this reason, it seems better to move the disabling and enabling of user mode helpers to separate functions that will be called by the PM core as necessary. [akpm@linux-foundation.org: remove unneeded ifdefs] Signed-off-by: Rafael J. Wysocki Cc: Alan Stern Acked-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kmod.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/kmod.h b/include/linux/kmod.h index a1a9157..92213a9 100644 --- a/include/linux/kmod.h +++ b/include/linux/kmod.h @@ -99,4 +99,7 @@ struct file; extern int call_usermodehelper_pipe(char *path, char *argv[], char *envp[], struct file **filp); +extern int usermodehelper_disable(void); +extern void usermodehelper_enable(void); + #endif /* __LINUX_KMOD_H__ */ -- cgit v1.1