diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 79d9edd..7a0d2e4 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -68,22 +68,25 @@
 #define map_key_clear(c)	hid_map_usage_clear(hidinput, usage, &bit, \
 		&max, EV_KEY, (c))
 
-static inline int match_scancode(int code, int scancode)
+static inline int match_scancode(unsigned int code, unsigned int scancode)
 {
 	if (scancode == 0)
 		return 1;
-	return ((code & (HID_USAGE_PAGE | HID_USAGE)) == scancode);
+
+	return (code & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
 }
 
-static inline int match_keycode(int code, int keycode)
+static inline int match_keycode(unsigned int code, unsigned int keycode)
 {
 	if (keycode == 0)
 		return 1;
-	return (code == keycode);
+
+	return code == keycode;
 }
 
 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
-		int scancode, int keycode)
+					   unsigned int scancode,
+					   unsigned int keycode)
 {
 	int i, j, k;
 	struct hid_report *report;
@@ -105,8 +108,8 @@
 	return NULL;
 }
 
-static int hidinput_getkeycode(struct input_dev *dev, int scancode,
-				int *keycode)
+static int hidinput_getkeycode(struct input_dev *dev,
+			       unsigned int scancode, unsigned int *keycode)
 {
 	struct hid_device *hid = input_get_drvdata(dev);
 	struct hid_usage *usage;
@@ -119,16 +122,13 @@
 	return -EINVAL;
 }
 
-static int hidinput_setkeycode(struct input_dev *dev, int scancode,
-				int keycode)
+static int hidinput_setkeycode(struct input_dev *dev,
+			       unsigned int scancode, unsigned int keycode)
 {
 	struct hid_device *hid = input_get_drvdata(dev);
 	struct hid_usage *usage;
 	int old_keycode;
 
-	if (keycode < 0 || keycode > KEY_MAX)
-		return -EINVAL;
-
 	usage = hidinput_find_key(hid, scancode, 0);
 	if (usage) {
 		old_keycode = usage->code;
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 9f9816b..2ee6c7a 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -515,7 +515,7 @@
 	struct input_absinfo abs;
 	struct ff_effect effect;
 	int __user *ip = (int __user *)p;
-	int i, t, u, v;
+	unsigned int i, t, u, v;
 	int error;
 
 	switch (cmd) {
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 41168d5..e2dd885 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -582,7 +582,8 @@
 }
 
 static int input_default_getkeycode(struct input_dev *dev,
-				    int scancode, int *keycode)
+				    unsigned int scancode,
+				    unsigned int *keycode)
 {
 	if (!dev->keycodesize)
 		return -EINVAL;
@@ -596,7 +597,8 @@
 }
 
 static int input_default_setkeycode(struct input_dev *dev,
-				    int scancode, int keycode)
+				    unsigned int scancode,
+				    unsigned int keycode)
 {
 	int old_keycode;
 	int i;
@@ -654,11 +656,9 @@
  * This function should be called by anyone interested in retrieving current
  * keymap. Presently keyboard and evdev handlers use it.
  */
-int input_get_keycode(struct input_dev *dev, int scancode, int *keycode)
+int input_get_keycode(struct input_dev *dev,
+		      unsigned int scancode, unsigned int *keycode)
 {
-	if (scancode < 0)
-		return -EINVAL;
-
 	return dev->getkeycode(dev, scancode, keycode);
 }
 EXPORT_SYMBOL(input_get_keycode);
@@ -672,16 +672,14 @@
  * This function should be called by anyone needing to update current
  * keymap. Presently keyboard and evdev handlers use it.
  */
-int input_set_keycode(struct input_dev *dev, int scancode, int keycode)
+int input_set_keycode(struct input_dev *dev,
+		      unsigned int scancode, unsigned int keycode)
 {
 	unsigned long flags;
 	int old_keycode;
 	int retval;
 
-	if (scancode < 0)
-		return -EINVAL;
-
-	if (keycode < 0 || keycode > KEY_MAX)
+	if (keycode > KEY_MAX)
 		return -EINVAL;
 
 	spin_lock_irqsave(&dev->event_lock, flags);
diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
index 0501f0e..15be5430 100644
--- a/drivers/input/misc/ati_remote2.c
+++ b/drivers/input/misc/ati_remote2.c
@@ -474,10 +474,11 @@
 }
 
 static int ati_remote2_getkeycode(struct input_dev *idev,
-				  int scancode, int *keycode)
+				  unsigned int scancode, unsigned int *keycode)
 {
 	struct ati_remote2 *ar2 = input_get_drvdata(idev);
-	int index, mode;
+	unsigned int mode;
+	int index;
 
 	mode = scancode >> 8;
 	if (mode > ATI_REMOTE2_PC || !((1 << mode) & ar2->mode_mask))
@@ -491,10 +492,12 @@
 	return 0;
 }
 
-static int ati_remote2_setkeycode(struct input_dev *idev, int scancode, int keycode)
+static int ati_remote2_setkeycode(struct input_dev *idev,
+				  unsigned int scancode, unsigned int keycode)
 {
 	struct ati_remote2 *ar2 = input_get_drvdata(idev);
-	int index, mode, old_keycode;
+	unsigned int mode, old_keycode;
+	int index;
 
 	mode = scancode >> 8;
 	if (mode > ATI_REMOTE2_PC || !((1 << mode) & ar2->mode_mask))
@@ -504,9 +507,6 @@
 	if (index < 0)
 		return -EINVAL;
 
-	if (keycode < KEY_RESERVED || keycode > KEY_MAX)
-		return -EINVAL;
-
 	old_keycode = ar2->keycode[mode][index];
 	ar2->keycode[mode][index] = keycode;
 	__set_bit(keycode, idev->keybit);
diff --git a/drivers/input/misc/winbond-cir.c b/drivers/input/misc/winbond-cir.c
index cbec3df..9c155a4 100644
--- a/drivers/input/misc/winbond-cir.c
+++ b/drivers/input/misc/winbond-cir.c
@@ -385,26 +385,24 @@
 }
 
 static int
-wbcir_getkeycode(struct input_dev *dev, int scancode, int *keycode)
+wbcir_getkeycode(struct input_dev *dev,
+		 unsigned int scancode, unsigned int *keycode)
 {
 	struct wbcir_data *data = input_get_drvdata(dev);
 
-	*keycode = (int)wbcir_do_getkeycode(data, (u32)scancode);
+	*keycode = wbcir_do_getkeycode(data, scancode);
 	return 0;
 }
 
 static int
-wbcir_setkeycode(struct input_dev *dev, int sscancode, int keycode)
+wbcir_setkeycode(struct input_dev *dev,
+		 unsigned int scancode, unsigned int keycode)
 {
 	struct wbcir_data *data = input_get_drvdata(dev);
 	struct wbcir_keyentry *keyentry;
 	struct wbcir_keyentry *new_keyentry;
 	unsigned long flags;
 	unsigned int old_keycode = KEY_RESERVED;
-	u32 scancode = (u32)sscancode;
-
-	if (keycode < 0 || keycode > KEY_MAX)
-		return -EINVAL;
 
 	new_keyentry = kmalloc(sizeof(*new_keyentry), GFP_KERNEL);
 	if (!new_keyentry)
diff --git a/drivers/input/sparse-keymap.c b/drivers/input/sparse-keymap.c
index fbd3987..e6bde55 100644
--- a/drivers/input/sparse-keymap.c
+++ b/drivers/input/sparse-keymap.c
@@ -64,7 +64,8 @@
 EXPORT_SYMBOL(sparse_keymap_entry_from_keycode);
 
 static int sparse_keymap_getkeycode(struct input_dev *dev,
-				    int scancode, int *keycode)
+				    unsigned int scancode,
+				    unsigned int *keycode)
 {
 	const struct key_entry *key =
 			sparse_keymap_entry_from_scancode(dev, scancode);
@@ -78,7 +79,8 @@
 }
 
 static int sparse_keymap_setkeycode(struct input_dev *dev,
-				    int scancode, int keycode)
+				    unsigned int scancode,
+				    unsigned int keycode)
 {
 	struct key_entry *key;
 	int old_keycode;
diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
index 0903f53..0a3b4ed 100644
--- a/drivers/media/IR/ir-keytable.c
+++ b/drivers/media/IR/ir-keytable.c
@@ -123,7 +123,7 @@
  * If the key is not found, returns -EINVAL, otherwise, returns 0.
  */
 static int ir_getkeycode(struct input_dev *dev,
-			 int scancode, int *keycode)
+			 unsigned int scancode, unsigned int *keycode)
 {
 	int elem;
 	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
@@ -291,7 +291,7 @@
  * If the key is not found, returns -EINVAL, otherwise, returns 0.
  */
 static int ir_setkeycode(struct input_dev *dev,
-			 int scancode, int keycode)
+			 unsigned int scancode, unsigned int keycode)
 {
 	int rc = 0;
 	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-remote.c b/drivers/media/dvb/dvb-usb/dvb-usb-remote.c
index a03ef7e..852fe89 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-remote.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-remote.c
@@ -9,7 +9,7 @@
 #include <linux/usb/input.h>
 
 static int dvb_usb_getkeycode(struct input_dev *dev,
-				    int scancode, int *keycode)
+				unsigned int scancode, unsigned int *keycode)
 {
 	struct dvb_usb_device *d = input_get_drvdata(dev);
 
@@ -39,7 +39,7 @@
 }
 
 static int dvb_usb_setkeycode(struct input_dev *dev,
-				    int scancode, int keycode)
+				unsigned int scancode, unsigned int keycode)
 {
 	struct dvb_usb_device *d = input_get_drvdata(dev);
 
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 1b1dddb..bed764e 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -142,7 +142,7 @@
 
 static struct input_dev *dell_wmi_input_dev;
 
-static struct key_entry *dell_wmi_get_entry_by_scancode(int code)
+static struct key_entry *dell_wmi_get_entry_by_scancode(unsigned int code)
 {
 	struct key_entry *key;
 
@@ -153,7 +153,7 @@
 	return NULL;
 }
 
-static struct key_entry *dell_wmi_get_entry_by_keycode(int keycode)
+static struct key_entry *dell_wmi_get_entry_by_keycode(unsigned int keycode)
 {
 	struct key_entry *key;
 
@@ -164,8 +164,8 @@
 	return NULL;
 }
 
-static int dell_wmi_getkeycode(struct input_dev *dev, int scancode,
-			       int *keycode)
+static int dell_wmi_getkeycode(struct input_dev *dev,
+				unsigned int scancode, unsigned int *keycode)
 {
 	struct key_entry *key = dell_wmi_get_entry_by_scancode(scancode);
 
@@ -177,13 +177,11 @@
 	return -EINVAL;
 }
 
-static int dell_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
+static int dell_wmi_setkeycode(struct input_dev *dev,
+				unsigned int scancode, unsigned int keycode)
 {
 	struct key_entry *key;
-	int old_keycode;
-
-	if (keycode < 0 || keycode > KEY_MAX)
-		return -EINVAL;
+	unsigned int old_keycode;
 
 	key = dell_wmi_get_entry_by_scancode(scancode);
 	if (key && key->type == KE_KEY) {
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 7ccf33c..5608636 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -278,7 +278,7 @@
 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
 static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
 
-static struct key_entry *hp_wmi_get_entry_by_scancode(int code)
+static struct key_entry *hp_wmi_get_entry_by_scancode(unsigned int code)
 {
 	struct key_entry *key;
 
@@ -289,7 +289,7 @@
 	return NULL;
 }
 
-static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode)
+static struct key_entry *hp_wmi_get_entry_by_keycode(unsigned int keycode)
 {
 	struct key_entry *key;
 
@@ -300,7 +300,8 @@
 	return NULL;
 }
 
-static int hp_wmi_getkeycode(struct input_dev *dev, int scancode, int *keycode)
+static int hp_wmi_getkeycode(struct input_dev *dev,
+			     unsigned int scancode, unsigned int *keycode)
 {
 	struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode);
 
@@ -312,13 +313,11 @@
 	return -EINVAL;
 }
 
-static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
+static int hp_wmi_setkeycode(struct input_dev *dev,
+			     unsigned int scancode, unsigned int keycode)
 {
 	struct key_entry *key;
-	int old_keycode;
-
-	if (keycode < 0 || keycode > KEY_MAX)
-		return -EINVAL;
+	unsigned int old_keycode;
 
 	key = hp_wmi_get_entry_by_scancode(scancode);
 	if (key && key->type == KE_KEY) {
diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index fe7cf01..c9fc479 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -200,7 +200,7 @@
 };
 
 #define KEYMAP_SIZE		11
-static const int initial_keymap[KEYMAP_SIZE] = {
+static const unsigned int initial_keymap[KEYMAP_SIZE] = {
 	/*  0 */ KEY_RESERVED,
 	/*  1 */ KEY_BRIGHTNESSDOWN,
 	/*  2 */ KEY_BRIGHTNESSUP,
@@ -222,7 +222,7 @@
 	struct acpi_device	*device;
 	struct input_dev	*input_dev;
 	struct backlight_device	*backlight;
-	int			keymap[KEYMAP_SIZE];
+	unsigned int		keymap[KEYMAP_SIZE];
 };
 
 struct pcc_keyinput {
@@ -445,7 +445,8 @@
 
 /* hotkey input device driver */
 
-static int pcc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
+static int pcc_getkeycode(struct input_dev *dev,
+			  unsigned int scancode, unsigned int *keycode)
 {
 	struct pcc_acpi *pcc = input_get_drvdata(dev);
 
@@ -457,7 +458,7 @@
 	return 0;
 }
 
-static int keymap_get_by_keycode(struct pcc_acpi *pcc, int keycode)
+static int keymap_get_by_keycode(struct pcc_acpi *pcc, unsigned int keycode)
 {
 	int i;
 
@@ -469,7 +470,8 @@
 	return 0;
 }
 
-static int pcc_setkeycode(struct input_dev *dev, int scancode, int keycode)
+static int pcc_setkeycode(struct input_dev *dev,
+			  unsigned int scancode, unsigned int keycode)
 {
 	struct pcc_acpi *pcc = input_get_drvdata(dev);
 	int oldkeycode;
@@ -477,9 +479,6 @@
 	if (scancode >= ARRAY_SIZE(pcc->keymap))
 		return -EINVAL;
 
-	if (keycode < 0 || keycode > KEY_MAX)
-		return -EINVAL;
-
 	oldkeycode = pcc->keymap[scancode];
 	pcc->keymap[scancode] = keycode;
 
diff --git a/drivers/platform/x86/topstar-laptop.c b/drivers/platform/x86/topstar-laptop.c
index 02f3d4e..4d6516f 100644
--- a/drivers/platform/x86/topstar-laptop.c
+++ b/drivers/platform/x86/topstar-laptop.c
@@ -46,7 +46,7 @@
 	{ }
 };
 
-static struct tps_key_entry *tps_get_key_by_scancode(int code)
+static struct tps_key_entry *tps_get_key_by_scancode(unsigned int code)
 {
 	struct tps_key_entry *key;
 
@@ -57,7 +57,7 @@
 	return NULL;
 }
 
-static struct tps_key_entry *tps_get_key_by_keycode(int code)
+static struct tps_key_entry *tps_get_key_by_keycode(unsigned int code)
 {
 	struct tps_key_entry *key;
 
@@ -126,7 +126,8 @@
 	return 0;
 }
 
-static int topstar_getkeycode(struct input_dev *dev, int scancode, int *keycode)
+static int topstar_getkeycode(struct input_dev *dev,
+				unsigned int scancode, unsigned int *keycode)
 {
 	struct tps_key_entry *key = tps_get_key_by_scancode(scancode);
 
@@ -137,14 +138,12 @@
 	return 0;
 }
 
-static int topstar_setkeycode(struct input_dev *dev, int scancode, int keycode)
+static int topstar_setkeycode(struct input_dev *dev,
+				unsigned int scancode, unsigned int keycode)
 {
 	struct tps_key_entry *key;
 	int old_keycode;
 
-	if (keycode < 0 || keycode > KEY_MAX)
-		return -EINVAL;
-
 	key = tps_get_key_by_scancode(scancode);
 
 	if (!key)
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 405b969..789240d 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -745,7 +745,7 @@
         .update_status  = set_lcd_status,
 };
 
-static struct key_entry *toshiba_acpi_get_entry_by_scancode(int code)
+static struct key_entry *toshiba_acpi_get_entry_by_scancode(unsigned int code)
 {
 	struct key_entry *key;
 
@@ -756,7 +756,7 @@
 	return NULL;
 }
 
-static struct key_entry *toshiba_acpi_get_entry_by_keycode(int code)
+static struct key_entry *toshiba_acpi_get_entry_by_keycode(unsigned int code)
 {
 	struct key_entry *key;
 
@@ -767,8 +767,8 @@
 	return NULL;
 }
 
-static int toshiba_acpi_getkeycode(struct input_dev *dev, int scancode,
-				   int *keycode)
+static int toshiba_acpi_getkeycode(struct input_dev *dev,
+				   unsigned int scancode, unsigned int *keycode)
 {
 	struct key_entry *key = toshiba_acpi_get_entry_by_scancode(scancode);
 
@@ -780,14 +780,11 @@
 	return -EINVAL;
 }
 
-static int toshiba_acpi_setkeycode(struct input_dev *dev, int scancode,
-				   int keycode)
+static int toshiba_acpi_setkeycode(struct input_dev *dev,
+				   unsigned int scancode, unsigned int keycode)
 {
 	struct key_entry *key;
-	int old_keycode;
-
-	if (keycode < 0 || keycode > KEY_MAX)
-		return -EINVAL;
+	unsigned int old_keycode;
 
 	key = toshiba_acpi_get_entry_by_scancode(scancode);
 	if (key && key->type == KE_KEY) {