ACPI: add 'const' to several ACPI file_operations

[linux-2.6-omap-h63xx.git] / drivers / acpi / thermal.c

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index c855f4446b5fc45263166051829166e7f1b1a0c4..480a317968865cabc9210083ec6c5f055dcb9781 100644 (file)
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -162,7 +162,7 @@ struct acpi_thermal_flags {
 };
 
 struct acpi_thermal {
-       acpi_handle handle;
+       struct acpi_device * device;
        acpi_bus_id name;
        unsigned long temperature;
        unsigned long last_temperature;
@@ -176,21 +176,21 @@ struct acpi_thermal {
        struct timer_list timer;
 };
 
-static struct file_operations acpi_thermal_state_fops = {
+static const struct file_operations acpi_thermal_state_fops = {
        .open = acpi_thermal_state_open_fs,
        .read = seq_read,
        .llseek = seq_lseek,
        .release = single_release,
 };
 
-static struct file_operations acpi_thermal_temp_fops = {
+static const struct file_operations acpi_thermal_temp_fops = {
        .open = acpi_thermal_temp_open_fs,
        .read = seq_read,
        .llseek = seq_lseek,
        .release = single_release,
 };
 
-static struct file_operations acpi_thermal_trip_fops = {
+static const struct file_operations acpi_thermal_trip_fops = {
        .open = acpi_thermal_trip_open_fs,
        .read = seq_read,
        .write = acpi_thermal_write_trip_points,
@@ -198,7 +198,7 @@ static struct file_operations acpi_thermal_trip_fops = {
        .release = single_release,
 };
 
-static struct file_operations acpi_thermal_cooling_fops = {
+static const struct file_operations acpi_thermal_cooling_fops = {
        .open = acpi_thermal_cooling_open_fs,
        .read = seq_read,
        .write = acpi_thermal_write_cooling_mode,
@@ -206,7 +206,7 @@ static struct file_operations acpi_thermal_cooling_fops = {
        .release = single_release,
 };
 
-static struct file_operations acpi_thermal_polling_fops = {
+static const struct file_operations acpi_thermal_polling_fops = {
        .open = acpi_thermal_polling_open_fs,
        .read = seq_read,
        .write = acpi_thermal_write_polling,
@@ -229,7 +229,7 @@ static int acpi_thermal_get_temperature(struct acpi_thermal *tz)
        tz->last_temperature = tz->temperature;
 
        status =
-           acpi_evaluate_integer(tz->handle, "_TMP", NULL, &tz->temperature);
+           acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tz->temperature);
        if (ACPI_FAILURE(status))
                return -ENODEV;
 
@@ -248,7 +248,7 @@ static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
                return -EINVAL;
 
        status =
-           acpi_evaluate_integer(tz->handle, "_TZP", NULL,
+           acpi_evaluate_integer(tz->device->handle, "_TZP", NULL,
                                  &tz->polling_frequency);
        if (ACPI_FAILURE(status))
                return -ENODEV;
@@ -285,7 +285,7 @@ static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
        if (!tz)
                return -EINVAL;
 
-       status = acpi_get_handle(tz->handle, "_SCP", &handle);
+       status = acpi_get_handle(tz->device->handle, "_SCP", &handle);
        if (ACPI_FAILURE(status)) {
                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
                return -ENODEV;
@@ -316,7 +316,7 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
 
        /* Critical Shutdown (required) */
 
-       status = acpi_evaluate_integer(tz->handle, "_CRT", NULL,
+       status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL,
                                       &tz->trips.critical.temperature);
        if (ACPI_FAILURE(status)) {
                tz->trips.critical.flags.valid = 0;
@@ -332,7 +332,7 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
        /* Critical Sleep (optional) */
 
        status =
-           acpi_evaluate_integer(tz->handle, "_HOT", NULL,
+           acpi_evaluate_integer(tz->device->handle, "_HOT", NULL,
                                  &tz->trips.hot.temperature);
        if (ACPI_FAILURE(status)) {
                tz->trips.hot.flags.valid = 0;
@@ -346,7 +346,7 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
        /* Passive: Processors (optional) */
 
        status =
-           acpi_evaluate_integer(tz->handle, "_PSV", NULL,
+           acpi_evaluate_integer(tz->device->handle, "_PSV", NULL,
                                  &tz->trips.passive.temperature);
        if (ACPI_FAILURE(status)) {
                tz->trips.passive.flags.valid = 0;
@@ -355,25 +355,25 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
                tz->trips.passive.flags.valid = 1;
 
                status =
-                   acpi_evaluate_integer(tz->handle, "_TC1", NULL,
+                   acpi_evaluate_integer(tz->device->handle, "_TC1", NULL,
                                          &tz->trips.passive.tc1);
                if (ACPI_FAILURE(status))
                        tz->trips.passive.flags.valid = 0;
 
                status =
-                   acpi_evaluate_integer(tz->handle, "_TC2", NULL,
+                   acpi_evaluate_integer(tz->device->handle, "_TC2", NULL,
                                          &tz->trips.passive.tc2);
                if (ACPI_FAILURE(status))
                        tz->trips.passive.flags.valid = 0;
 
                status =
-                   acpi_evaluate_integer(tz->handle, "_TSP", NULL,
+                   acpi_evaluate_integer(tz->device->handle, "_TSP", NULL,
                                          &tz->trips.passive.tsp);
                if (ACPI_FAILURE(status))
                        tz->trips.passive.flags.valid = 0;
 
                status =
-                   acpi_evaluate_reference(tz->handle, "_PSL", NULL,
+                   acpi_evaluate_reference(tz->device->handle, "_PSL", NULL,
                                            &tz->trips.passive.devices);
                if (ACPI_FAILURE(status))
                        tz->trips.passive.flags.valid = 0;
@@ -393,14 +393,14 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
                char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
 
                status =
-                   acpi_evaluate_integer(tz->handle, name, NULL,
+                   acpi_evaluate_integer(tz->device->handle, name, NULL,
                                          &tz->trips.active[i].temperature);
                if (ACPI_FAILURE(status))
                        break;
 
                name[2] = 'L';
                status =
-                   acpi_evaluate_reference(tz->handle, name, NULL,
+                   acpi_evaluate_reference(tz->device->handle, name, NULL,
                                            &tz->trips.active[i].devices);
                if (ACPI_SUCCESS(status)) {
                        tz->trips.active[i].flags.valid = 1;
@@ -424,7 +424,7 @@ static int acpi_thermal_get_devices(struct acpi_thermal *tz)
                return -EINVAL;
 
        status =
-           acpi_evaluate_reference(tz->handle, "_TZD", NULL, &tz->devices);
+           acpi_evaluate_reference(tz->device->handle, "_TZD", NULL, &tz->devices);
        if (ACPI_FAILURE(status))
                return -ENODEV;
 
@@ -453,10 +453,6 @@ static int acpi_thermal_call_usermode(char *path)
 
 static int acpi_thermal_critical(struct acpi_thermal *tz)
 {
-       int result = 0;
-       struct acpi_device *device = NULL;
-
-
        if (!tz || !tz->trips.critical.flags.valid)
                return -EINVAL;
 
@@ -466,14 +462,10 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
        } else if (tz->trips.critical.flags.enabled)
                tz->trips.critical.flags.enabled = 0;
 
-       result = acpi_bus_get_device(tz->handle, &device);
-       if (result)
-               return result;
-
        printk(KERN_EMERG
               "Critical temperature reached (%ld C), shutting down.\n",
               KELVIN_TO_CELSIUS(tz->temperature));
-       acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_CRITICAL,
+       acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
                                tz->trips.critical.flags.enabled);
 
        acpi_thermal_call_usermode(ACPI_THERMAL_PATH_POWEROFF);
@@ -483,10 +475,6 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
 
 static int acpi_thermal_hot(struct acpi_thermal *tz)
 {
-       int result = 0;
-       struct acpi_device *device = NULL;
-
-
        if (!tz || !tz->trips.hot.flags.valid)
                return -EINVAL;
 
@@ -496,11 +484,7 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
        } else if (tz->trips.hot.flags.enabled)
                tz->trips.hot.flags.enabled = 0;
 
-       result = acpi_bus_get_device(tz->handle, &device);
-       if (result)
-               return result;
-
-       acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_HOT,
+       acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
                                tz->trips.hot.flags.enabled);
 
        /* TBD: Call user-mode "sleep(S4)" function */
@@ -1193,8 +1177,7 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
        if (!tz)
                return;
 
-       if (acpi_bus_get_device(tz->handle, &device))
-               return;
+       device = tz->device;
 
        switch (event) {
        case ACPI_THERMAL_NOTIFY_TEMPERATURE:
@@ -1293,7 +1276,7 @@ static int acpi_thermal_add(struct acpi_device *device)
                return -ENOMEM;
        memset(tz, 0, sizeof(struct acpi_thermal));
 
-       tz->handle = device->handle;
+       tz->device = device;
        strcpy(tz->name, device->pnp.bus_id);
        strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
@@ -1311,7 +1294,7 @@ static int acpi_thermal_add(struct acpi_device *device)
 
        acpi_thermal_check(tz);
 
-       status = acpi_install_notify_handler(tz->handle,
+       status = acpi_install_notify_handler(device->handle,
                                             ACPI_DEVICE_NOTIFY,
                                             acpi_thermal_notify, tz);
        if (ACPI_FAILURE(status)) {
@@ -1352,7 +1335,7 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
        /* deferred task may reinsert timer */
        del_timer_sync(&(tz->timer));
 
-       status = acpi_remove_notify_handler(tz->handle,
+       status = acpi_remove_notify_handler(device->handle,
                                            ACPI_DEVICE_NOTIFY,
                                            acpi_thermal_notify);