drivers/platform/x86/amd-pmc.c:88:5: warning: "CONFIG_DEBUG_FS" is not defined, evaluates to 0

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f838f8d2b694cf9d524dc4423e9dd2db13892f3f
commit: 156ec4731cb22b06c08e27debc1ef9f16f4bbb5e platform/x86: amd-pmc: Add AMD platform support for S2Idle
date:   7 weeks ago
config: i386-randconfig-p002-20201222 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=156ec4731cb22b06c08e27debc1ef9f16f4bbb5e
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 156ec4731cb22b06c08e27debc1ef9f16f4bbb5e
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/platform/x86/amd-pmc.c:88:5: warning: "CONFIG_DEBUG_FS" is not defined, evaluates to 0 [-Wundef]
      88 | #if CONFIG_DEBUG_FS
         |     ^~~~~~~~~~~~~~~


vim +/CONFIG_DEBUG_FS +88 drivers/platform/x86/amd-pmc.c

    87	
  > 88	#if CONFIG_DEBUG_FS
    89	static int smu_fw_info_show(struct seq_file *s, void *unused)
    90	{
    91		struct amd_pmc_dev *dev = s->private;
    92		u32 value;
    93	
    94		value = ioread32(dev->smu_base + AMD_SMU_FW_VERSION);
    95		seq_printf(s, "SMU FW Info: %x\n", value);
    96		return 0;
    97	}
    98	DEFINE_SHOW_ATTRIBUTE(smu_fw_info);
    99	

---
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Attachment: .config.gz
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