[driver-core:debugfs_cleanup 46/47] drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c:237:48: error: 'root' undeclared; did you mean 'ror8'?

[driver-core:debugfs_cleanup 46/47] drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c:237:48: error: 'root' undeclared; did you mean 'ror8'?

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git debugfs_cleanup
head:   ef50c0149ff6aa510790d31eb3ffd5a0d2249727
commit: e166ed14a34253629572f1f31e1389c1d606c342 [46/47] media: c8sectpfe: no need to check return value of debugfs_create functions
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout e166ed14a34253629572f1f31e1389c1d606c342
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c: In function 'c8sectpfe_debugfs_init':
>> drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c:237:48: error: 'root' undeclared (first use in this function); did you mean 'ror8'?
     debugfs_create_regset32("registers", S_IRUGO, root, fei->regset);
                                                   ^~~~
                                                   ror8
   drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c:237:48: note: each undeclared identifier is reported only once for each function it appears in

vim +237 drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c

   225	
   226	void c8sectpfe_debugfs_init(struct c8sectpfei *fei)
   227	{
   228		fei->regset =  devm_kzalloc(fei->dev, sizeof(*fei->regset), GFP_KERNEL);
   229		if (!fei->regset)
   230			return;
   231	
   232		fei->regset->regs = fei_sys_regs;
   233		fei->regset->nregs = ARRAY_SIZE(fei_sys_regs);
   234		fei->regset->base = fei->io;
   235	
   236		fei->root = debugfs_create_dir("c8sectpfe", NULL);
 > 237		debugfs_create_regset32("registers", S_IRUGO, root, fei->regset);
   238	}
   239	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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