thinkpad-acpi: clean up ACPI handles handling

1. Remove <handle>_path, as its only user was already removed in
   a previous commit

2. Move all handle initialization, as well as <handle>_parent and
   <handle>_paths to __init.* sections.  This reduces the driver's
   runtime footprint nicely.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 29ad273..b3bfce9 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -516,9 +516,9 @@ static acpi_handle ec_handle;
 
 #define TPACPI_HANDLE(object, parent, paths...)                        \
        static acpi_handle  object##_handle;                    \
-       static acpi_handle *object##_parent = &parent##_handle; \
-       static char        *object##_path;                      \
-       static char        *object##_paths[] = { paths }
+       static const acpi_handle *object##_parent __initdata =  \
+                                               &parent##_handle; \
+       static char *object##_paths[] __initdata = { paths }
 
 TPACPI_HANDLE(ecrd, ec, "ECRD");       /* 570 */
 TPACPI_HANDLE(ecwr, ec, "ECWR");       /* 570 */
@@ -673,11 +673,11 @@ static int issue_thinkpad_cmos_command(int cmos_cmd)
 
 #define TPACPI_ACPIHANDLE_INIT(object) \
        drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
-               object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
+               object##_paths, ARRAY_SIZE(object##_paths))
 
-static void drv_acpi_handle_init(char *name,
-                          acpi_handle *handle, acpi_handle parent,
-                          char **paths, int num_paths, char **path)
+static void __init drv_acpi_handle_init(const char *name,
+                          acpi_handle *handle, const acpi_handle parent,
+                          char **paths, const int num_paths)
 {
        int i;
        acpi_status status;
@@ -688,10 +688,9 @@ static void drv_acpi_handle_init(char *name,
        for (i = 0; i < num_paths; i++) {
                status = acpi_get_handle(parent, paths[i], handle);
                if (ACPI_SUCCESS(status)) {
-                       *path = paths[i];
                        dbg_printk(TPACPI_DBG_INIT,
                                   "Found ACPI handle %s for %s\n",
-                                  *path, name);
+                                  paths[i], name);
                        return;
                }
        }