diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2012-01-13 14:28:56 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-02-10 11:12:04 +0100 |
| commit | f76e1d814241794467366d70d3d77849a6fd5ab0 (patch) | |
| tree | df9ae09697350126d7c603f0515d050f906eae24 /hw/usb-ehci.c | |
| parent | 3200d1085df5f368885428e33d9439f55c7f1a47 (diff) | |
| download | qemu-f76e1d814241794467366d70d3d77849a6fd5ab0.zip qemu-f76e1d814241794467366d70d3d77849a6fd5ab0.tar.gz qemu-f76e1d814241794467366d70d3d77849a6fd5ab0.tar.bz2 | |
usb-ehci: Clear the portstatus powner bit on device disconnect
According to the EHCI spec port ownership should revert to the EHCI controller
on device disconnect. This fixes the problem of a port getting stuck on USB 1
when using redirection and plugging in a USB 2 device after a USB 1 device
has been redirected.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb-ehci.c')
| -rw-r--r-- | hw/usb-ehci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c index 75ef71e..cdd7415 100644 --- a/hw/usb-ehci.c +++ b/hw/usb-ehci.c @@ -765,6 +765,11 @@ static void ehci_detach(USBPort *port) USBPort *companion = s->companion_ports[port->index]; companion->ops->detach(companion); companion->dev = NULL; + /* + * EHCI spec 4.2.2: "When a disconnect occurs... On the event, + * the port ownership is returned immediately to the EHCI controller." + */ + *portsc &= ~PORTSC_POWNER; return; } |