1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 24ccf81d135f..11abc7bf777e 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -72,7 +72,7 @@ struct acpi_ac {
         unsigned long state;
 };
 
-static struct file_operations acpi_ac_fops = {
+static const struct file_operations acpi_ac_fops = {
         .open = acpi_ac_open_fs,
         .read = seq_read,
         .llseek = seq_lseek,
@@ -285,6 +285,8 @@ static int __init acpi_ac_init(void)
 {
         int result;
 
+        if (acpi_disabled)
+                return -ENODEV;
 
         acpi_ac_dir = acpi_lock_ac_dir();
         if (!acpi_ac_dir)