[PATCH] sysfs: (rest) if show/store is missing return -EIO
sysfs: fix the rest of the kernel so if an attribute doesn't
implement show or store method read/write will return
-EIO instead of 0 or -EINVAL or -EPERM.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/security/seclvl.c b/security/seclvl.c
index 8a0ab0d..c8e87b2 100644
--- a/security/seclvl.c
+++ b/security/seclvl.c
@@ -155,7 +155,7 @@
struct seclvl_obj *obj = container_of(kobj, struct seclvl_obj, kobj);
struct seclvl_attribute *attribute =
container_of(attr, struct seclvl_attribute, attr);
- return (attribute->store ? attribute->store(obj, buf, len) : 0);
+ return attribute->store ? attribute->store(obj, buf, len) : -EIO;
}
static ssize_t
@@ -164,7 +164,7 @@
struct seclvl_obj *obj = container_of(kobj, struct seclvl_obj, kobj);
struct seclvl_attribute *attribute =
container_of(attr, struct seclvl_attribute, attr);
- return (attribute->show ? attribute->show(obj, buf) : 0);
+ return attribute->show ? attribute->show(obj, buf) : -EIO;
}
/**