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| author | Huang Ying <ying.huang@intel.com> | 2008-08-15 00:40:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-15 08:35:42 -0700 |
| commit | 73bd9c72a29be1e8de008186eea55d333a938804 (patch) | |
| tree | f01823f4f93ca08fa7619b093dd8eed6ba5b58ab /kernel/kexec.c | |
| parent | ca195b7f6da3d5dde0bb85a7c322d7de73352653 (diff) | |
| download | lwn-73bd9c72a29be1e8de008186eea55d333a938804.tar.gz lwn-73bd9c72a29be1e8de008186eea55d333a938804.zip | |
kexec jump: in sync with hibernation implementation
Add device_pm_lock() and device_pm_unlock() in kernel_kexec() in sync with
current hibernation implementation.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kexec.c')
| -rw-r--r-- | kernel/kexec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index b81682312dc4..17c80fdc453b 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1457,6 +1457,7 @@ int kernel_kexec(void) error = disable_nonboot_cpus(); if (error) goto Resume_devices; + device_pm_lock(); local_irq_disable(); /* At this point, device_suspend() has been called, * but *not* device_power_down(). We *must* @@ -1485,6 +1486,7 @@ int kernel_kexec(void) device_power_up(PMSG_RESTORE); Enable_irqs: local_irq_enable(); + device_pm_unlock(); enable_nonboot_cpus(); Resume_devices: device_resume(PMSG_RESTORE); |