Commit-ID: 4ac5fc6a3e4d90120f292526bcaa5ee182a7411b Gitweb: http://git.kernel.org/tip/4ac5fc6a3e4d90120f292526bcaa5ee182a7411b Author: Xiaotian Feng <dfeng@xxxxxxxxxx> AuthorDate: Tue, 29 Mar 2011 16:34:32 +0800 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Tue, 29 Mar 2011 11:12:04 +0200 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@xxxxxxxxxx> Cc: Tigran Aivazian <tigran@xxxxxxxxxxxxxxxxxxxx> Cc: Rafael J. Wysocki <rjw@xxxxxxx> LKML-Reference: <1301387672-23661-1-git-send-email-dfeng@xxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- 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 5ed0ab5..f924280 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); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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