[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/drivers/firmware/edd.c b/drivers/firmware/edd.c
index 33b669e..6996476 100644
--- a/drivers/firmware/edd.c
+++ b/drivers/firmware/edd.c
@@ -115,7 +115,7 @@
{
struct edd_device *dev = to_edd_device(kobj);
struct edd_attribute *edd_attr = to_edd_attr(attr);
- ssize_t ret = 0;
+ ssize_t ret = -EIO;
if (edd_attr->show)
ret = edd_attr->show(dev, buf);