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| author | Xiaotian Feng <dfeng@redhat.com> | 2011-03-29 16:34:32 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-03-29 11:12:04 +0200 |
| commit | 4ac5fc6a3e4d90120f292526bcaa5ee182a7411b (patch) | |
| tree | a1b418e13fb87549b63645657a21cd49a44e04f6 /arch | |
| parent | ca444564a947034557a85357b3911d067cac4b8f (diff) | |
| download | blackbird-op-linux-4ac5fc6a3e4d90120f292526bcaa5ee182a7411b.tar.gz blackbird-op-linux-4ac5fc6a3e4d90120f292526bcaa5ee182a7411b.zip | |
x86, microcode: Unregister syscore_ops after microcode unloaded
Currently, microcode doesn't unregister syscore_ops after it's
unloaded. So if we modprobe then rmmod microcode, the stale
microcode syscore_ops info will stay on syscore_ops_list.
Later when we're trying to reboot/halt/shutdown the machine, kernel
will panic on syscore_shutdown().
With the patch applied, I can reboot/halt/shutdown my machine successfully.
Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
LKML-Reference: <1301387672-23661-1-git-send-email-dfeng@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/microcode_core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c index 5ed0ab549eb8..f9242800bc84 100644 --- a/arch/x86/kernel/microcode_core.c +++ b/arch/x86/kernel/microcode_core.c @@ -550,6 +550,7 @@ static void __exit microcode_exit(void) microcode_dev_exit(); unregister_hotcpu_notifier(&mc_cpu_notifier); + unregister_syscore_ops(&mc_syscore_ops); get_online_cpus(); mutex_lock(µcode_mutex); |
