[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>
diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c
index d4aaa88..78899ee 100644
--- a/fs/sysfs/bin.c
+++ b/fs/sysfs/bin.c
@@ -25,7 +25,7 @@
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 @@
struct kobject *kobj = to_kobj(dentry->d_parent);
if (!attr->write)
- return -EINVAL;
+ return -EIO;
return attr->write(kobj, buffer, offset, count);
}