linux-kernel - [tip:ras/core 2/2] drivers/ras/debugfs.c:9:5: error: redefinition of 'ras_userspace

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Date:   Mon, 25 Mar 2019 06:41:49 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Valdis Klētnieks <valdis.kletnieks@...edu>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tipbuild@...or.com, Borislav Petkov <bp@...e.de>
Subject: [tip:ras/core 2/2] drivers/ras/debugfs.c:9:5: error: redefinition of
 'ras_userspace_consumers'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ras/core
head:   56baf8bd6c92819b1d89210fbfac2c6327a1271b
commit: 56baf8bd6c92819b1d89210fbfac2c6327a1271b [2/2] ras/debugfs: Fix -Wmissing-prototypes warnings
config: x86_64-randconfig-x003-201912 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 56baf8bd6c92819b1d89210fbfac2c6327a1271b
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> drivers/ras/debugfs.c:9:5: error: redefinition of 'ras_userspace_consumers'
    int ras_userspace_consumers(void)
        ^~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/ras/debugfs.c:2:0:
   include/linux/ras.h:14:19: note: previous definition of 'ras_userspace_consumers' was here
    static inline int ras_userspace_consumers(void) { return 0; }
                      ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/ras/debugfs.c:39:12: error: redefinition of 'ras_add_daemon_trace'
    int __init ras_add_daemon_trace(void)
               ^~~~~~~~~~~~~~~~~~~~
   In file included from drivers/ras/debugfs.c:2:0:
   include/linux/ras.h:16:19: note: previous definition of 'ras_add_daemon_trace' was here
    static inline int ras_add_daemon_trace(void) { return 0; }
                      ^~~~~~~~~~~~~~~~~~~~
>> drivers/ras/debugfs.c:55:13: error: redefinition of 'ras_debugfs_init'
    void __init ras_debugfs_init(void)
                ^~~~~~~~~~~~~~~~
   In file included from drivers/ras/debugfs.c:2:0:
   include/linux/ras.h:15:20: note: previous definition of 'ras_debugfs_init' was here
    static inline void ras_debugfs_init(void) { }
                       ^~~~~~~~~~~~~~~~

vim +/ras_userspace_consumers +9 drivers/ras/debugfs.c

d963cd95 Chen, Gong 2014-06-11   8  
d963cd95 Chen, Gong 2014-06-11  @9  int ras_userspace_consumers(void)
d963cd95 Chen, Gong 2014-06-11  10  {
d963cd95 Chen, Gong 2014-06-11  11  	return atomic_read(&trace_count);
d963cd95 Chen, Gong 2014-06-11  12  }
d963cd95 Chen, Gong 2014-06-11  13  EXPORT_SYMBOL_GPL(ras_userspace_consumers);
d963cd95 Chen, Gong 2014-06-11  14  
d963cd95 Chen, Gong 2014-06-11  15  static int trace_show(struct seq_file *m, void *v)
d963cd95 Chen, Gong 2014-06-11  16  {
d963cd95 Chen, Gong 2014-06-11  17  	return atomic_read(&trace_count);
d963cd95 Chen, Gong 2014-06-11  18  }
d963cd95 Chen, Gong 2014-06-11  19  
d963cd95 Chen, Gong 2014-06-11  20  static int trace_open(struct inode *inode, struct file *file)
d963cd95 Chen, Gong 2014-06-11  21  {
d963cd95 Chen, Gong 2014-06-11  22  	atomic_inc(&trace_count);
d963cd95 Chen, Gong 2014-06-11  23  	return single_open(file, trace_show, NULL);
d963cd95 Chen, Gong 2014-06-11  24  }
d963cd95 Chen, Gong 2014-06-11  25  
d963cd95 Chen, Gong 2014-06-11  26  static int trace_release(struct inode *inode, struct file *file)
d963cd95 Chen, Gong 2014-06-11  27  {
d963cd95 Chen, Gong 2014-06-11  28  	atomic_dec(&trace_count);
d963cd95 Chen, Gong 2014-06-11  29  	return single_release(inode, file);
d963cd95 Chen, Gong 2014-06-11  30  }
d963cd95 Chen, Gong 2014-06-11  31  
d963cd95 Chen, Gong 2014-06-11  32  static const struct file_operations trace_fops = {
d963cd95 Chen, Gong 2014-06-11  33  	.open    = trace_open,
d963cd95 Chen, Gong 2014-06-11  34  	.read    = seq_read,
d963cd95 Chen, Gong 2014-06-11  35  	.llseek  = seq_lseek,
d963cd95 Chen, Gong 2014-06-11  36  	.release = trace_release,
d963cd95 Chen, Gong 2014-06-11  37  };
d963cd95 Chen, Gong 2014-06-11  38  
d963cd95 Chen, Gong 2014-06-11 @39  int __init ras_add_daemon_trace(void)
d963cd95 Chen, Gong 2014-06-11  40  {
d963cd95 Chen, Gong 2014-06-11  41  	struct dentry *fentry;
d963cd95 Chen, Gong 2014-06-11  42  
d963cd95 Chen, Gong 2014-06-11  43  	if (!ras_debugfs_dir)
d963cd95 Chen, Gong 2014-06-11  44  		return -ENOENT;
d963cd95 Chen, Gong 2014-06-11  45  
d963cd95 Chen, Gong 2014-06-11  46  	fentry = debugfs_create_file("daemon_active", S_IRUSR, ras_debugfs_dir,
d963cd95 Chen, Gong 2014-06-11  47  				     NULL, &trace_fops);
d963cd95 Chen, Gong 2014-06-11  48  	if (!fentry)
d963cd95 Chen, Gong 2014-06-11  49  		return -ENODEV;
d963cd95 Chen, Gong 2014-06-11  50  
d963cd95 Chen, Gong 2014-06-11  51  	return 0;
d963cd95 Chen, Gong 2014-06-11  52  
d963cd95 Chen, Gong 2014-06-11  53  }
d963cd95 Chen, Gong 2014-06-11  54  
d963cd95 Chen, Gong 2014-06-11 @55  void __init ras_debugfs_init(void)

:::::: The code at line 9 was first introduced by commit
:::::: d963cd95bea93b7db9390a71d1e2cabbb3b2c3ea RAS, debugfs: Add debugfs interface for RAS subsystem

:::::: TO: Chen, Gong <gong.chen@...ux.intel.com>
:::::: CC: Tony Luck <tony.luck@...el.com>

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