commit fdfea124f9e12232f99d9f235267ca1eeeb23469
author Laurent Vivier <lvivier@redhat.com> Tue Aug 25 17:19:57 2015 +0200
committer Laurent Vivier <lvivier@redhat.com> Fri Sep 25 14:56:22 2015 +0200
tree dd679eb3cdb3bef9e1687c640555c00508bb20c8
parent 0a4f9240f5b8b1bfe2d5c5c2748545bc23771bb4

bt: remove muldiv64()

Originally, timers were ticks based, and it made sense to
add ticks to current time to know when to trigger an alarm.

But since commit:

7447545 change all other clock references to use nanosecond resolution accessors

All timers use nanoseconds and we need to convert ticks to nanoseconds.

As get_ticks_per_sec() is 10^9,

    a = muldiv64(b, get_ticks_per_sec(), 100);
    y = muldiv64(x, get_ticks_per_sec(), 1000000);

can be converted to

    a = b * 10000000;
    y = x * 1000;

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

hw/bt/hci.c

diff --git a/hw/bt/hci.c b/hw/bt/hci.c
index 3fec435..6a88d49 100644
--- a/hw/bt/hci.c
+++ b/hw/bt/hci.c
@@ -595,7 +595,7 @@
 static void bt_hci_mod_timer_1280ms(QEMUTimer *timer, int period)
 {
     timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
-                   muldiv64(period << 7, get_ticks_per_sec(), 100));
+                     (uint64_t)(period << 7) * 10000000);
 }
 
 static void bt_hci_inquiry_start(struct bt_hci_s *hci, int length)
@@ -1099,7 +1099,7 @@
     bt_hci_event_status(hci, HCI_SUCCESS);
 
     timer_mod(link->acl_mode_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
-                   muldiv64(interval * 625, get_ticks_per_sec(), 1000000));
+                                    ((uint64_t)interval * 625) * 1000);
     bt_hci_lmp_mode_change_master(hci, link->link, mode, interval);
 
     return 0;