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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@linux.intel.com>
:::::: CC: Tony Luck <tony.luck@intel.com>

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