platform/x86: fujitsu-laptop: simplify brightness key event generation logic

Returning early when there is no brightness change allows removal of a
duplicate code block, makes the purpose of the following code clearer
and allows the condition surrounding key event generation to be removed.
Local integer variables can also be declared in a single line.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-and-tested-by: Jonathan Woithe <jwoithe@just42.net>

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index b19f6e1..4a5e7b6 100644 (file)
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -790,8 +790,7 @@ static int acpi_fujitsu_bl_remove(struct acpi_device *device)
 static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
 {
        struct input_dev *input;
-       int keycode;
-       int oldb, newb;
+       int oldb, newb, keycode;
 
        input = fujitsu_bl->input;
 
@@ -806,7 +805,6 @@ static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
                return;
        }
 
-       keycode = 0;
        oldb = fujitsu_bl->brightness_level;
        get_lcd_level();
        newb = fujitsu_bl->brightness_level;
@@ -815,30 +813,22 @@ static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
                    "brightness button event [%i -> %i (%i)]\n",
                    oldb, newb, fujitsu_bl->brightness_changed);
 
-       if (oldb < newb) {
-               if (disable_brightness_adjust != 1) {
-                       if (use_alt_lcd_levels)
-                               set_lcd_level_alt(newb);
-                       else
-                               set_lcd_level(newb);
-               }
-               keycode = KEY_BRIGHTNESSUP;
-       } else if (oldb > newb) {
-               if (disable_brightness_adjust != 1) {
-                       if (use_alt_lcd_levels)
-                               set_lcd_level_alt(newb);
-                       else
-                               set_lcd_level(newb);
-               }
-               keycode = KEY_BRIGHTNESSDOWN;
-       }
+       if (oldb == newb)
+               return;
 
-       if (keycode != 0) {
-               input_report_key(input, keycode, 1);
-               input_sync(input);
-               input_report_key(input, keycode, 0);
-               input_sync(input);
+       if (disable_brightness_adjust != 1) {
+               if (use_alt_lcd_levels)
+                       set_lcd_level_alt(newb);
+               else
+                       set_lcd_level(newb);
        }
+
+       keycode = oldb < newb ? KEY_BRIGHTNESSUP : KEY_BRIGHTNESSDOWN;
+
+       input_report_key(input, keycode, 1);
+       input_sync(input);
+       input_report_key(input, keycode, 0);
+       input_sync(input);
 }
 
 /* ACPI device for hotkey handling */