From 94985134b7b46848267ed6b734320db01c974e72 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 16 Mar 2007 13:38:06 -0800 Subject: [PATCH] [PATCH] swsusp: disable nonboot CPUs before entering platform suspend Prevent the WARN_ON() in arch/x86_64/kernel/acpi/sleep.c:init_low_mapping() from triggering by disabling nonboot CPUs before we finally enter the platform suspend. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/power/disk.c | 1 + kernel/power/user.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/power/disk.c b/kernel/power/disk.c index a200c5fc42e..873cdf8ea5a 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -58,6 +58,7 @@ static inline int platform_prepare(void) static void power_down(suspend_disk_method_t mode) { + disable_nonboot_cpus(); switch(mode) { case PM_DISK_PLATFORM: if (pm_ops && pm_ops->enter) { diff --git a/kernel/power/user.c b/kernel/power/user.c index dd09efe7df5..d6a8dcc26ae 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -398,9 +398,10 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, case PMOPS_ENTER: if (data->platform_suspend) { + disable_nonboot_cpus(); kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK); error = pm_ops->enter(PM_SUSPEND_DISK); - error = 0; + enable_nonboot_cpus(); } break; -- 2.20.1