[patch 1/4] fix some f_ops abuse in acpi

[Arjan van de Ven]

From: Arjan van de Ven <arjan@xxxxxxxxxxxxx>

The ACPI layer writes to acpi_processor_limit_fops.write at runtime, while
it in reality is a compile time constant. Move this to the struct definition
instead.
Similar for acpi_video_bus_POST_fops.write and friends, but keep doing those 
at runtime to avoid prototype-hell.

Signed-off-by: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
CC: Len Brown <len.brown@xxxxxxxxx>

Index: linux-2.6.15/drivers/acpi/processor_core.c
 drivers/acpi/processor_core.c       |    2 --
 drivers/acpi/processor_perflib.c    |    2 +-
 drivers/acpi/processor_thermal.c    |    1 +
 drivers/acpi/processor_throttling.c |    1 +
 drivers/acpi/video.c                |    8 ++++----
 5 files changed, 7 insertions(+), 7 deletions(-)

Index: linux-2.6.15/drivers/acpi/processor_core.c
===================================================================
--- linux-2.6.15.orig/drivers/acpi/processor_core.c
+++ linux-2.6.15/drivers/acpi/processor_core.c
@@ -357,7 +357,6 @@ static int acpi_processor_add_fs(struct 
 				  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_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;
 	}
Index: linux-2.6.15/drivers/acpi/processor_thermal.c
===================================================================
--- linux-2.6.15.orig/drivers/acpi/processor_thermal.c
+++ linux-2.6.15/drivers/acpi/processor_thermal.c
@@ -394,6 +394,7 @@ ssize_t acpi_processor_write_limit(struc
 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,
 };
Index: linux-2.6.15/drivers/acpi/processor_throttling.c
===================================================================
--- linux-2.6.15.orig/drivers/acpi/processor_throttling.c
+++ linux-2.6.15/drivers/acpi/processor_throttling.c
@@ -337,6 +337,7 @@ ssize_t acpi_processor_write_throttling(
 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,
 };
Index: linux-2.6.15/drivers/acpi/video.c
===================================================================
--- linux-2.6.15.orig/drivers/acpi/video.c
+++ linux-2.6.15/drivers/acpi/video.c
@@ -920,8 +920,8 @@ static int acpi_video_device_add_fs(stru
 		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(stru
 		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_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_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;
 	}
Index: linux-2.6.15/drivers/acpi/processor_perflib.c
===================================================================
--- linux-2.6.15.orig/drivers/acpi/processor_perflib.c
+++ linux-2.6.15/drivers/acpi/processor_perflib.c
@@ -520,8 +520,8 @@ static void acpi_cpufreq_add_file(struct
 				  "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;
 	}


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