diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index 22fc9e28a58d..f99ad05cd6a2 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -348,9 +348,9 @@ static int acpi_processor_limit_open_fs(struct inode *inode, struct file *file)
 			   PDE(inode)->data);
 }
 
-ssize_t acpi_processor_write_limit(struct file * file,
-				   const char __user * buffer,
-				   size_t count, loff_t * data)
+static ssize_t acpi_processor_write_limit(struct file * file,
+					  const char __user * buffer,
+					  size_t count, loff_t * data)
 {
 	int result = 0;
 	struct seq_file *m = (struct seq_file *)file->private_data;
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 5cd056abfcfb..b966549ec000 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -306,9 +306,9 @@ static int acpi_processor_throttling_open_fs(struct inode *inode,
 			   PDE(inode)->data);
 }
 
-ssize_t acpi_processor_write_throttling(struct file * file,
-					const char __user * buffer,
-					size_t count, loff_t * data)
+static ssize_t acpi_processor_write_throttling(struct file * file,
+					       const char __user * buffer,
+					       size_t count, loff_t * data)
 {
 	int result = 0;
 	struct seq_file *m = (struct seq_file *)file->private_data;
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 7a00d5089de9..edb5a8919cb6 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -235,9 +235,6 @@ static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
 /* in processor_throttling.c */
 int acpi_processor_get_throttling_info(struct acpi_processor *pr);
 int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
-ssize_t acpi_processor_write_throttling(struct file *file,
-					const char __user * buffer,
-					size_t count, loff_t * data);
 extern struct file_operations acpi_processor_throttling_fops;
 
 /* in processor_idle.c */
@@ -249,9 +246,6 @@ int acpi_processor_power_exit(struct acpi_processor *pr,
 
 /* in processor_thermal.c */
 int acpi_processor_get_limit_info(struct acpi_processor *pr);
-ssize_t acpi_processor_write_limit(struct file *file,
-				   const char __user * buffer,
-				   size_t count, loff_t * data);
 extern struct file_operations acpi_processor_limit_fops;
 
 #ifdef CONFIG_CPU_FREQ