xen-netfront: do not cast grant table reference to signed short

While grant reference is of type uint32_t, xen-netfront erroneously casts
it to signed short in BUG_ON().

This would lead to the xen domU panic during boot-up or migration when it
is attached with lots of paravirtual devices.

Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

path: root/screen.c

#include <curses.h>

#include "screen.h"

WINDOW *screen_init(bool israw)
{
	WINDOW *screen = initscr();

	if (israw)
		raw();
	noecho();
	cbreak();
	nodelay(screen, TRUE);
	keypad(stdscr, TRUE);
	refresh();
	wrefresh(screen);

	return screen;
}

void screen_end(void)
{
	endwin();
}