Input: atkbd - release previously reserved keycodes 248 - 254

Keycodes in 248 - 254 range were reserved for special needs (scrolling)
of atkbd driver. Now that the driver has been switched to use unsigned
short keycodes instead of unsigned char we can release this range back
into pull. We keep code 255 (ATKBD_KEY_NULL) reserved since users may
have been using it to silence keys they do not care about since atkbd
silently drops scancodes mapped to this keycode.

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

drivers/input/keyboard/atkbd.c

@@ -153,16 +153,16 @@ static const unsigned short atkbd_unxlate_table[128] = {
 #define ATKBD_RET_HANGEUL	0xf2
 #define ATKBD_RET_ERR		0xff
 
-#define ATKBD_KEY_UNKNOWN	  0
+#define ATKBD_KEY_UNKNOWN	0
 #define ATKBD_KEY_NULL		255
 
-#define ATKBD_SCR_1		254
-#define ATKBD_SCR_2		253
-#define ATKBD_SCR_4		252
-#define ATKBD_SCR_8		251
-#define ATKBD_SCR_CLICK		250
-#define ATKBD_SCR_LEFT		249
-#define ATKBD_SCR_RIGHT		248
+#define ATKBD_SCR_1		0xfffe
+#define ATKBD_SCR_2		0xfffd
+#define ATKBD_SCR_4		0xfffc
+#define ATKBD_SCR_8		0xfffb
+#define ATKBD_SCR_CLICK		0xfffa
+#define ATKBD_SCR_LEFT		0xfff9
+#define ATKBD_SCR_RIGHT		0xfff8
 
 #define ATKBD_SPECIAL		ATKBD_SCR_RIGHT
 
@@ -177,7 +177,7 @@ static const unsigned short atkbd_unxlate_table[128] = {
 #define ATKBD_XL_HANJA		0x20
 
 static const struct {
-	unsigned char keycode;
+	unsigned short keycode;
 	unsigned char set2;
 } atkbd_scroll_keys[] = {
 	{ ATKBD_SCR_1,     0xc5 },
@@ -1074,9 +1074,13 @@ static void atkbd_set_device_attrs(struct atkbd *atkbd)
 	input_dev->keycodesize = sizeof(unsigned short);
 	input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
 
-	for (i = 0; i < ATKBD_KEYMAP_SIZE; i++)
-		if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
+	for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
+		if (atkbd->keycode[i] != KEY_RESERVED &&
+		    atkbd->keycode[i] != ATKBD_KEY_NULL &&
+		    atkbd->keycode[i] < ATKBD_SPECIAL) {
 			__set_bit(atkbd->keycode[i], input_dev->keybit);
+		}
+	}
 }
 
 /*

include/linux/input.h

@@ -377,7 +377,7 @@ struct input_absinfo {
 
 #define KEY_WIMAX		246
 
-/* Range 248 - 255 is reserved for special needs of AT keyboard driver */
+/* Code 255 is reserved for special needs of AT keyboard driver */
 
 #define BTN_MISC		0x100
 #define BTN_0			0x100