1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 119c94093a13..e85885593280 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -65,14 +65,14 @@ static ssize_t acpi_device_attr_show(struct kobject *kobj,
 {
         struct acpi_device *device = to_acpi_device(kobj);
         struct acpi_device_attribute *attribute = to_handle_attr(attr);
-        return attribute->show ? attribute->show(device, buf) : 0;
+        return attribute->show ? attribute->show(device, buf) : -EIO;
 }
 static ssize_t acpi_device_attr_store(struct kobject *kobj,
                 struct attribute *attr, const char *buf, size_t len)
 {
         struct acpi_device *device = to_acpi_device(kobj);
         struct acpi_device_attribute *attribute = to_handle_attr(attr);
-        return attribute->store ? attribute->store(device, buf, len) : len;
+        return attribute->store ? attribute->store(device, buf, len) : -EIO;
 }
 
 static struct sysfs_ops acpi_device_sysfs_ops = {