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| author | Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> | 2012-01-14 08:11:31 +0530 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-13 19:11:35 -0800 |
| commit | a3301b751b19f0efbafddc4034f8e7ce6bf3007b (patch) | |
| tree | 1b94ed9c9ecf887c53bb416d5e7b59694aa353f6 /arch/x86 | |
| parent | 96e80a7851b44f3decaac0625665cd64e550b71d (diff) | |
| download | linux-a3301b751b19f0efbafddc4034f8e7ce6bf3007b.tar.gz linux-a3301b751b19f0efbafddc4034f8e7ce6bf3007b.tar.bz2 linux-a3301b751b19f0efbafddc4034f8e7ce6bf3007b.zip | |
x86/mce: Fix CPU hotplug and suspend regression related to MCE
Commit 8a25a2fd126c ("cpu: convert 'cpu' and 'machinecheck' sysdev_class
to a regular subsystem") changed how things are dealt with in the MCE
subsystem. Some of the things that got broken due to this are CPU
hotplug and suspend/hibernate.
MCE uses per_cpu allocations of struct device. So, when a CPU goes
offline and comes back online, in order to ensure that we start from a
clean slate with respect to the MCE subsystem, zero out the entire
per_cpu device structure to 0 before using it.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index f22a9f7f6390..29ba3297e480 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -2011,7 +2011,7 @@ static __cpuinit int mce_device_create(unsigned int cpu) if (!mce_available(&boot_cpu_data)) return -EIO; - memset(&dev->kobj, 0, sizeof(struct kobject)); + memset(dev, 0, sizeof(struct device)); dev->id = cpu; dev->bus = &mce_subsys; |