* [PATCH -v2 5/8] kexec jump: in sync with hibernation implementation
@ 2008-08-08 6:52 Huang Ying
0 siblings, 0 replies; only message in thread
From: Huang Ying @ 2008-08-08 6:52 UTC (permalink / raw)
To: Eric W. Biederman, Pavel Machek, nigel, Rafael J. Wysocki,
Andrew Morton, Vivek Goyal, mingo, Linus Torvalds
Cc: linux-kernel, Kexec Mailing List
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>
---
kernel/kexec.c | 2 ++
1 file changed, 2 insertions(+)
--- 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);
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2008-08-08 6:52 [PATCH -v2 5/8] kexec jump: in sync with hibernation implementation Huang Ying
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