diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 1278aca96fe3e05141773eec181742b5b53f1c5c..60e550f1f955ac84466a312e87854f4df47dfa45 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -357,7 +357,6 @@ static int acpi_processor_add_fs(struct acpi_device *device)
 				  ACPI_PROCESSOR_FILE_THROTTLING));
 	else {
 		entry->proc_fops = &acpi_processor_throttling_fops;
-		entry->proc_fops->write = acpi_processor_write_throttling;
 		entry->data = acpi_driver_data(device);
 		entry->owner = THIS_MODULE;
 	}
@@ -372,7 +371,6 @@ static int acpi_processor_add_fs(struct acpi_device *device)
 				  ACPI_PROCESSOR_FILE_LIMIT));
 	else {
 		entry->proc_fops = &acpi_processor_limit_fops;
-		entry->proc_fops->write = acpi_processor_write_limit;
 		entry->data = acpi_driver_data(device);
 		entry->owner = THIS_MODULE;
 	}
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 22c7bb66c2005c4956a241c7a31a566d9ae6b073..0c0234e18261ba0703019504f5be361c8a776670 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -520,8 +520,8 @@ static void acpi_cpufreq_add_file(struct acpi_processor *pr)
 				  "Unable to create '%s' fs entry\n",
 				  ACPI_PROCESSOR_FILE_PERFORMANCE));
 	else {
+		acpi_processor_perf_fops.write = acpi_processor_write_performance;
 		entry->proc_fops = &acpi_processor_perf_fops;
-		entry->proc_fops->write = acpi_processor_write_performance;
 		entry->data = acpi_driver_data(device);
 		entry->owner = THIS_MODULE;
 	}
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index dc9817cfb882a87f6b640640aeb243988e059c3d..22fc9e28a58d91d2c99f8bcaa7fecd6dcb405701 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -394,6 +394,7 @@ ssize_t acpi_processor_write_limit(struct file * file,
 struct file_operations acpi_processor_limit_fops = {
 	.open = acpi_processor_limit_open_fs,
 	.read = seq_read,
+	.write = acpi_processor_write_limit,
 	.llseek = seq_lseek,
 	.release = single_release,
 };
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 74a52d4e79ae936d8ee30aa19ae6e23279e45c4b..5cd056abfcfb52e4cf371eb57e72c42c655c0b09 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -337,6 +337,7 @@ ssize_t acpi_processor_write_throttling(struct file * file,
 struct file_operations acpi_processor_throttling_fops = {
 	.open = acpi_processor_throttling_open_fs,
 	.read = seq_read,
+	.write = acpi_processor_write_throttling,
 	.llseek = seq_lseek,
 	.release = single_release,
 };
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index d10668f146997d07c53630b722d15fad2054ed98..bd4887518373e2a2111cf9f2af755519d749361d 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -920,8 +920,8 @@ static int acpi_video_device_add_fs(struct acpi_device *device)
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 				  "Unable to create 'state' fs entry\n"));
 	else {
+		acpi_video_device_state_fops.write = acpi_video_device_write_state;
 		entry->proc_fops = &acpi_video_device_state_fops;
-		entry->proc_fops->write = acpi_video_device_write_state;
 		entry->data = acpi_driver_data(device);
 		entry->owner = THIS_MODULE;
 	}
@@ -934,8 +934,8 @@ static int acpi_video_device_add_fs(struct acpi_device *device)
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 				  "Unable to create 'brightness' fs entry\n"));
 	else {
+		acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness;
 		entry->proc_fops = &acpi_video_device_brightness_fops;
-		entry->proc_fops->write = acpi_video_device_write_brightness;
 		entry->data = acpi_driver_data(device);
 		entry->owner = THIS_MODULE;
 	}
@@ -1239,8 +1239,8 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 				  "Unable to create 'POST' fs entry\n"));
 	else {
+		acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST;
 		entry->proc_fops = &acpi_video_bus_POST_fops;
-		entry->proc_fops->write = acpi_video_bus_write_POST;
 		entry->data = acpi_driver_data(device);
 		entry->owner = THIS_MODULE;
 	}
@@ -1253,8 +1253,8 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 				  "Unable to create 'DOS' fs entry\n"));
 	else {
+		acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS;
 		entry->proc_fops = &acpi_video_bus_DOS_fops;
-		entry->proc_fops->write = acpi_video_bus_write_DOS;
 		entry->data = acpi_driver_data(device);
 		entry->owner = THIS_MODULE;
 	}