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Subject[PATCH 2/4] PM: Do not destroy/create devices while suspended in msr.c (rev. 2)
Date
From: Rafael J. Wysocki <rjw@sisk.pl>

The MSR driver should not attempt to destroy/create a device while
suspended, unless this device corresponds to a nonboot CPU that
failed to go online during a resume, in which case the PM core should
be asked to remove it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---
arch/x86/kernel/msr.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Index: linux-2.6/arch/x86/kernel/msr.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/msr.c
+++ linux-2.6/arch/x86/kernel/msr.c
@@ -155,15 +155,15 @@ static int __cpuinit msr_class_cpu_callb

switch (action) {
case CPU_UP_PREPARE:
- case CPU_UP_PREPARE_FROZEN:
err = msr_device_create(cpu);
break;
case CPU_UP_CANCELED:
- case CPU_UP_CANCELED_FROZEN:
case CPU_DEAD:
- case CPU_DEAD_FROZEN:
msr_device_destroy(cpu);
break;
+ case CPU_UP_CANCELED_FROZEN:
+ destroy_suspended_device(msr_class, MKDEV(MSR_MAJOR, cpu));
+ break;
}
return err ? NOTIFY_BAD : NOTIFY_OK;
}


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