in lib/io.c [38:50]
void __raw_writesw(void __iomem *addr, const void *data, int len)
{
const short int *src = (short int *)data;
volatile short int *dst = (short int *)addr;
if ((u32)data & 0x1)
panic("unaligned pointer to writesw");
while (len-- > 0)
*dst = *src++;
}