linux-kernel - [tip:smp/hotplug 5/20] arch/x86/kernel/msr.c:220:27: error: 'CPUHP_X86_MSR

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Date:   Tue, 22 Nov 2016 00:09:22 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tipbuild@...or.com, Thomas Gleixner <tglx@...utronix.de>
Subject: [tip:smp/hotplug 5/20] arch/x86/kernel/msr.c:220:27: error:
 'CPUHP_X86_MSR_PREPARE' undeclared

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git smp/hotplug
head:   73f4f6f5ab9a069037b8e98663193accaf18bd5c
commit: 216a5d1b866538a021af00bfb7c5dcd1da8ff884 [5/20] x86/msr: Convert to hotplug state machine
config: x86_64-randconfig-x011-201647 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout 216a5d1b866538a021af00bfb7c5dcd1da8ff884
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   arch/x86/kernel/msr.c: In function 'msr_init':
>> arch/x86/kernel/msr.c:220:27: error: 'CPUHP_X86_MSR_PREPARE' undeclared (first use in this function)
     err  = cpuhp_setup_state(CPUHP_X86_MSR_PREPARE, "x86/msr:online",
                              ^~~~~~~~~~~~~~~~~~~~~
   arch/x86/kernel/msr.c:220:27: note: each undeclared identifier is reported only once for each function it appears in
>> arch/x86/kernel/msr.c:211:3: error: label 'out' used but not defined
      goto out;
      ^~~~

vim +/CPUHP_X86_MSR_PREPARE +220 arch/x86/kernel/msr.c

   205	{
   206		int err;
   207	
   208		if (__register_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr", &msr_fops)) {
   209			pr_err("unable to get major %d for msr\n", MSR_MAJOR);
   210			err = -EBUSY;
 > 211			goto out;
   212		}
   213		msr_class = class_create(THIS_MODULE, "msr");
   214		if (IS_ERR(msr_class)) {
   215			err = PTR_ERR(msr_class);
   216			goto out_chrdev;
   217		}
   218		msr_class->devnode = msr_devnode;
   219	
 > 220		err  = cpuhp_setup_state(CPUHP_X86_MSR_PREPARE, "x86/msr:online",
   221					 msr_device_create, msr_device_destroy);
   222		if (err < 0)
   223			goto out_class;

---
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