ACPI: button: use Linux style for getting driver_data

It's typical and slightly more compact to look up the driver_data
structure by initializing the automatic variable at its definition.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index c463236..8ef8f44 100644 (file)
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -162,10 +162,8 @@ static struct proc_dir_entry *acpi_lid_dir;
 
 static int acpi_button_add_fs(struct acpi_device *device)
 {
+       struct acpi_button *button = acpi_driver_data(device);
        struct proc_dir_entry *entry = NULL;
-       struct acpi_button *button;
-
-       button = acpi_driver_data(device);
 
        switch (button->type) {
        case ACPI_BUTTON_TYPE_POWER:
@@ -291,9 +289,8 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
 
 static int acpi_button_resume(struct acpi_device *device)
 {
-       struct acpi_button *button;
+       struct acpi_button *button = acpi_driver_data(device);
 
-       button = acpi_driver_data(device);
        if (button->type == ACPI_BUTTON_TYPE_LID)
                return acpi_lid_send_state(button);
        return 0;
@@ -301,9 +298,9 @@ static int acpi_button_resume(struct acpi_device *device)
 
 static int acpi_button_add(struct acpi_device *device)
 {
-       int error;
        struct acpi_button *button;
        struct input_dev *input;
+       int error;
 
        button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
        if (!button)
@@ -419,9 +416,7 @@ static int acpi_button_add(struct acpi_device *device)
 
 static int acpi_button_remove(struct acpi_device *device, int type)
 {
-       struct acpi_button *button;
-
-       button = acpi_driver_data(device);
+       struct acpi_button *button = acpi_driver_data(device);
 
        acpi_button_remove_fs(device);
        input_unregister_device(button->input);