diff options
author | Gerd Hoffmann <kraxel@redhat.com> | 2016-02-22 09:50:11 +0100 |
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committer | Gerd Hoffmann <kraxel@redhat.com> | 2016-02-23 11:13:18 +0100 |
commit | fa1298c2d623522eda7b4f1f721fcb935abb7360 (patch) | |
tree | 5138e06933f9ee89d68dbfb879dd04a716c55fe4 /hw/usb/hcd-ohci.c | |
parent | 5f77e06baa84323e5bbc96c2c7f4fe627078b210 (diff) | |
download | qemu-fa1298c2d623522eda7b4f1f721fcb935abb7360.zip qemu-fa1298c2d623522eda7b4f1f721fcb935abb7360.tar.gz qemu-fa1298c2d623522eda7b4f1f721fcb935abb7360.tar.bz2 |
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.c | 34 |
1 files changed, 8 insertions, 26 deletions
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c index bed55dd..17ed461 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), |