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authorGerd Hoffmann <kraxel@redhat.com>2016-02-22 09:50:11 +0100
committerGerd Hoffmann <kraxel@redhat.com>2016-02-23 11:13:18 +0100
commitfa1298c2d623522eda7b4f1f721fcb935abb7360 (patch)
tree5138e06933f9ee89d68dbfb879dd04a716c55fe4 /hw/usb/hcd-ohci.c
parent5f77e06baa84323e5bbc96c2c7f4fe627078b210 (diff)
ohci: allocate timer only once.
Allocate timer once, at init time, instead of allocating/freeing it all the time when starting/stopping the bus. Simplifies the code, also fixes bugs (memory leak) due to missing checks whenever the time is already allocated or not. Cc: Prasad J Pandit <pjp@fedoraproject.org> Reported-by: Zuozhi Fzz <zuozhi.fzz@alibaba-inc.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb/hcd-ohci.c')
-rw-r--r--hw/usb/hcd-ohci.c34
1 files changed, 8 insertions, 26 deletions
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c
index bed55dda78..17ed4617ef 100644
--- a/hw/usb/hcd-ohci.c
+++ b/hw/usb/hcd-ohci.c
@@ -1347,16 +1347,6 @@ static void ohci_frame_boundary(void *opaque)
*/
static int ohci_bus_start(OHCIState *ohci)
{
- ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
- ohci_frame_boundary,
- ohci);
-
- if (ohci->eof_timer == NULL) {
- trace_usb_ohci_bus_eof_timer_failed(ohci->name);
- ohci_die(ohci);
- return 0;
- }
-
trace_usb_ohci_start(ohci->name);
/* Delay the first SOF event by one frame time as
@@ -1373,11 +1363,7 @@ static int ohci_bus_start(OHCIState *ohci)
static void ohci_bus_stop(OHCIState *ohci)
{
trace_usb_ohci_stop(ohci->name);
- if (ohci->eof_timer) {
- timer_del(ohci->eof_timer);
- timer_free(ohci->eof_timer);
- }
- ohci->eof_timer = NULL;
+ timer_del(ohci->eof_timer);
}
/* Sets a flag in a port status register but only set it if the port is
@@ -1907,6 +1893,9 @@ static void usb_ohci_init(OHCIState *ohci, DeviceState *dev,
usb_packet_init(&ohci->usb_packet);
ohci->async_td = 0;
+
+ ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
+ ohci_frame_boundary, ohci);
}
#define TYPE_PCI_OHCI "pci-ohci"
@@ -1976,6 +1965,9 @@ static void usb_ohci_exit(PCIDevice *dev)
if (!ohci->masterbus) {
usb_bus_release(&s->bus);
}
+
+ timer_del(s->eof_timer);
+ timer_free(s->eof_timer);
}
static void usb_ohci_reset_pci(DeviceState *d)
@@ -2041,23 +2033,13 @@ static bool ohci_eof_timer_needed(void *opaque)
{
OHCIState *ohci = opaque;
- return ohci->eof_timer != NULL;
-}
-
-static int ohci_eof_timer_pre_load(void *opaque)
-{
- OHCIState *ohci = opaque;
-
- ohci_bus_start(ohci);
-
- return 0;
+ return timer_pending(ohci->eof_timer);
}
static const VMStateDescription vmstate_ohci_eof_timer = {
.name = "ohci-core/eof-timer",
.version_id = 1,
.minimum_version_id = 1,
- .pre_load = ohci_eof_timer_pre_load,
.needed = ohci_eof_timer_needed,
.fields = (VMStateField[]) {
VMSTATE_TIMER_PTR(eof_timer, OHCIState),