Input: wistron - convert to dynamic input_dev allocation

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 37 insertions, 16 deletions

diff --git a/drivers/input/misc/wistron_btns.c b/drivers/input/misc/wistron_btns.c
index 6d7e865f900..b64798d838a 100644
--- a/drivers/input/misc/wistron_btns.c
+++ b/drivers/input/misc/wistron_btns.c
@@ -149,7 +149,7 @@ err:
         return -ENOMEM;
 }
 
-static void __exit unmap_bios(void)
+static inline void unmap_bios(void)
 {
         iounmap(bios_code_map_base);
         iounmap(bios_data_map_base);
@@ -180,7 +180,7 @@ static void __init bios_attach(void)
         call_bios(&regs);
 }
 
-static void __exit bios_detach(void)
+static void bios_detach(void)
 {
         struct regs regs;
 
@@ -342,31 +342,43 @@ static int __init select_keymap(void)
 
  /* Input layer interface */
 
-static struct input_dev input_dev = {
-        .name = "Wistron laptop buttons",
-};
+static struct input_dev *input_dev;
 
-static void __init setup_input_dev(void)
+static int __init setup_input_dev(void)
 {
         const struct key_entry *key;
+        int error;
+
+        input_dev = input_allocate_device();
+        if (!input_dev)
+                return -ENOMEM;
+
+        input_dev->name = "Wistron laptop buttons";
+        input_dev->phys = "wistron/input0";
+        input_dev->id.bustype = BUS_HOST;
 
         for (key = keymap; key->type != KE_END; key++) {
                 if (key->type == KE_KEY) {
-                        input_dev.evbit[LONG(EV_KEY)] = BIT(EV_KEY);
-                        input_dev.keybit[LONG(key->keycode)]
-                                |= BIT(key->keycode);
+                        input_dev->evbit[LONG(EV_KEY)] = BIT(EV_KEY);
+                        set_bit(key->keycode, input_dev->keybit);
                 }
         }
 
-        input_register_device(&input_dev);
+        error = input_register_device(input_dev);
+        if (error) {
+                input_free_device(input_dev);
+                return error;
+        }
+
+        return 0;
 }
 
 static void report_key(unsigned keycode)
 {
-        input_report_key(&input_dev, keycode, 1);
-        input_sync(&input_dev);
-        input_report_key(&input_dev, keycode, 0);
-        input_sync(&input_dev);
+        input_report_key(input_dev, keycode, 1);
+        input_sync(input_dev);
+        input_report_key(input_dev, keycode, 0);
+        input_sync(input_dev);
 }
 
  /* Driver core */
@@ -437,11 +449,14 @@ static int __init wb_module_init(void)
         err = select_keymap();
         if (err)
                 return err;
+
         err = map_bios();
         if (err)
                 return err;
+
         bios_attach();
         cmos_address = bios_get_cmos_address();
+
         if (have_wifi) {
                 u16 wifi = bios_get_default_setting(WIFI);
                 if (wifi & 1)
@@ -452,6 +467,7 @@ static int __init wb_module_init(void)
                 if (have_wifi)
                         bios_set_state(WIFI, wifi_enabled);
         }
+
         if (have_bluetooth) {
                 u16 bt = bios_get_default_setting(BLUETOOTH);
                 if (bt & 1)
@@ -463,7 +479,12 @@ static int __init wb_module_init(void)
                         bios_set_state(BLUETOOTH, bluetooth_enabled);
         }
 
-        setup_input_dev();
+        err = setup_input_dev();
+        if (err) {
+                bios_detach();
+                unmap_bios();
+                return err;
+        }
 
         poll_bios(1); /* Flush stale event queue and arm timer */
 
@@ -473,7 +494,7 @@ static int __init wb_module_init(void)
 static void __exit wb_module_exit(void)
 {
         del_timer_sync(&poll_timer);
-        input_unregister_device(&input_dev);
+        input_unregister_device(input_dev);
         bios_detach();
         unmap_bios();
 }