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sysfs: spit a warning to users when they try to create a duplicate sysfs file

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We want to let people know when we create a duplicate sysfs file, as
they need to fix up their code.


Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Greg Kroah-Hartman 2007-09-13 02:53:13 -07:00
commit 5c3e8964ce
1 changed files with 5 additions and 1 deletions
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6
fs/sysfs/dir.c
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@ -428,8 +428,12 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
*/
int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
{
if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) {
printk(KERN_WARNING "sysfs: duplicate filename '%s' "
"can not be created\n", sd->s_name);
WARN_ON(1);
return -EEXIST;
}
sd->s_parent = sysfs_get(acxt->parent_sd);