KVM: i8254: drop local copy of mul_u64_u32_div

#define RW_STATE_WORD0 3

#define RW_STATE_WORD1 4

/* Compute with 96 bit intermediate result: (a*b)/c */

static u64 muldiv64(u64 a, u32 b, u32 c)

{

	union {

		u64 ll;

		struct {

			u32 low, high;

		} l;

	} u, res;

	u64 rl, rh;

	u.ll = a;

	rl = (u64)u.l.low * (u64)b;

	rh = (u64)u.l.high * (u64)b;

	rh += (rl >> 32);

	res.l.high = div64_u64(rh, c);

	res.l.low = div64_u64(((mod_64(rh, c) << 32) + (rl & 0xffffffff)), c);

	return res.ll;

}

static void pit_set_gate(struct kvm_pit *pit, int channel, u32 val)

{

	struct kvm_kpit_channel_state *c = &pit->pit_state.channels[channel];

	int counter;

	t = kpit_elapsed(pit, c, channel);

	d = muldiv64(t, KVM_PIT_FREQ, NSEC_PER_SEC);

	d = mul_u64_u32_div(t, KVM_PIT_FREQ, NSEC_PER_SEC);

	switch (c->mode) {

	case 0:

	int out;

	t = kpit_elapsed(pit, c, channel);

	d = muldiv64(t, KVM_PIT_FREQ, NSEC_PER_SEC);

	d = mul_u64_u32_div(t, KVM_PIT_FREQ, NSEC_PER_SEC);

	switch (c->mode) {

	default:

	    ps->flags & KVM_PIT_FLAGS_HPET_LEGACY)

		return;

	interval = muldiv64(val, NSEC_PER_SEC, KVM_PIT_FREQ);

	interval = mul_u64_u32_div(val, NSEC_PER_SEC, KVM_PIT_FREQ);

	pr_debug("create pit timer, interval is %llu nsec\n", interval);