Input: evdev - fix some sparse warnings (signedness, shadowing)

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

drivers/input/evdev.c

@@ -512,7 +512,7 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
 
 				if ((_IOC_NR(cmd) & ~EV_MAX) == _IOC_NR(EVIOCGBIT(0,0))) {
 
-					long *bits;
+					unsigned long *bits;
 					int len;
 
 					switch (_IOC_NR(cmd) & EV_MAX) {
@@ -557,7 +557,7 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
 
 				if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0))) {
 
-					int t = _IOC_NR(cmd) & ABS_MAX;
+					t = _IOC_NR(cmd) & ABS_MAX;
 
 					abs.value = dev->abs[t];
 					abs.minimum = dev->absmin[t];
@@ -577,7 +577,7 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
 
 				if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0))) {
 
-					int t = _IOC_NR(cmd) & ABS_MAX;
+					t = _IOC_NR(cmd) & ABS_MAX;
 
 					if (copy_from_user(&abs, p, sizeof(struct input_absinfo)))
 						return -EFAULT;