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authorHuang Ying <ying.huang@intel.com>2008-08-15 00:40:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-15 08:35:42 -0700
commit73bd9c72a29be1e8de008186eea55d333a938804 (patch)
treef01823f4f93ca08fa7619b093dd8eed6ba5b58ab /kernel/kexec.c
parentca195b7f6da3d5dde0bb85a7c322d7de73352653 (diff)
downloadlinux-2.6.34-ux500-73bd9c72a29be1e8de008186eea55d333a938804.tar.gz
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.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index b81682312dc..17c80fdc453 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);