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Commit 5c3e8964 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
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sysfs: spit a warning to users when they try to create a duplicate sysfs file 



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


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent dc8c8587

fs/sysfs/dir.c

+5 −1
Original line number Diff line number Diff line
@@ -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);