3 files changed, 4 insertions, 3 deletions

diff --git a/drivers/firmware/edd.c b/drivers/firmware/edd.c
index 33b669e6f977..6996476669f1 100644
--- a/drivers/firmware/edd.c
+++ b/drivers/firmware/edd.c
@@ -115,7 +115,7 @@ edd_attr_show(struct kobject * kobj, struct attribute *attr, char *buf)
 {
         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);
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index 0287ff65963b..a3451cb94004 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -352,7 +352,7 @@ static ssize_t efivar_attr_show(struct kobject *kobj, struct attribute *attr,
 {
         struct efivar_entry *var = to_efivar_entry(kobj);
         struct efivar_attribute *efivar_attr = to_efivar_attr(attr);
-        ssize_t ret = 0;
+        ssize_t ret = -EIO;
 
         if (!capable(CAP_SYS_ADMIN))
                 return -EACCES;
@@ -368,7 +368,7 @@ static ssize_t efivar_attr_store(struct kobject *kobj, struct attribute *attr,
 {
         struct efivar_entry *var = to_efivar_entry(kobj);
         struct efivar_attribute *efivar_attr = to_efivar_attr(attr);
-        ssize_t ret = 0;
+        ssize_t ret = -EIO;
 
         if (!capable(CAP_SYS_ADMIN))
                 return -EACCES;
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 6d5df6c2efa2..df1b721154d2 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -11,6 +11,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/config.h>
 #include <linux/acpi.h>
 #include <linux/console.h>
 #include <linux/efi.h>