From c76d0abd07a9c9cf72bbb5b641e1e97f92ea8f3e Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dtor_core@ameritech.net>
Date: Fri, 29 Apr 2005 01:22:00 -0500
Subject: [PATCH] [PATCH] sysfs: if show/store is missing return -EIO
sysfs: if attribute does not implement show or store method
read/write should return -EIO instead of 0 or -EINVAL.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
fs/sysfs/bin.c | 4 ++--
fs/sysfs/file.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c
index d4aaa88d02144b..78899eeab9742c 100644
--- a/fs/sysfs/bin.c
+++ b/fs/sysfs/bin.c
@@ -25,7 +25,7 @@ fill_read(struct dentry *dentry, char *buffer, loff_t off, size_t count)
struct kobject * kobj = to_kobj(dentry->d_parent);
if (!attr->read)
- return -EINVAL;
+ return -EIO;
return attr->read(kobj, buffer, off, count);
}
@@ -71,7 +71,7 @@ flush_write(struct dentry *dentry, char *buffer, loff_t offset, size_t count)
struct kobject *kobj = to_kobj(dentry->d_parent);
if (!attr->write)
- return -EINVAL;
+ return -EIO;
return attr->write(kobj, buffer, offset, count);
}
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 364208071e1747..1481cae7d99ad0 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -23,7 +23,7 @@ subsys_attr_show(struct kobject * kobj, struct attribute * attr, char * page)
{
struct subsystem * s = to_subsys(kobj);
struct subsys_attribute * sattr = to_sattr(attr);
- ssize_t ret = 0;
+ ssize_t ret = -EIO;
if (sattr->show)
ret = sattr->show(s,page);
@@ -36,7 +36,7 @@ subsys_attr_store(struct kobject * kobj, struct attribute * attr,
{
struct subsystem * s = to_subsys(kobj);
struct subsys_attribute * sattr = to_sattr(attr);
- ssize_t ret = 0;
+ ssize_t ret = -EIO;
if (sattr->store)
ret = sattr->store(s,page,count);
--
GitLab