[PATCH] sysfs: (driver/pci) if show/store is missing return -EIO
sysfs: fix drivers/pci so if an attribute does not implement
show or store method read/write will return -EIO
instead of 0.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index c802f62..c428290 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -73,7 +73,7 @@
{
struct hotplug_slot *slot = to_hotplug_slot(kobj);
struct hotplug_slot_attribute *attribute = to_hotplug_attr(attr);
- return attribute->show ? attribute->show(slot, buf) : 0;
+ return attribute->show ? attribute->show(slot, buf) : -EIO;
}
static ssize_t hotplug_slot_attr_store(struct kobject *kobj,
@@ -81,7 +81,7 @@
{
struct hotplug_slot *slot = to_hotplug_slot(kobj);
struct hotplug_slot_attribute *attribute = to_hotplug_attr(attr);
- return attribute->store ? attribute->store(slot, buf, len) : 0;
+ return attribute->store ? attribute->store(slot, buf, len) : -EIO;
}
static struct sysfs_ops hotplug_slot_sysfs_ops = {