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usb: add usb_pick_speed

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We can pick the usb port speed in generic code, by looking at the port
and device speed masks and looking for the fastest match.  So add a
function to do exactly that, and drop the speed setting code from
usb_desc_attach as it isn't needed any more.

This way we can set the device speed before calling port->ops->attach,
which fixes some xhci hotplug issues.

https://bugzilla.redhat.com/show_bug.cgi?id=1046873

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2014-05-23 16:20:54 +02:00
parent 322fd1f4f7
commit b791c3b38c
3 changed files with 22 additions and 12 deletions
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1
include/hw/usb.h
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@ -458,6 +458,7 @@ void usb_ep_combine_input_packets(USBEndpoint *ep);
void usb_combined_input_packet_complete(USBDevice *dev, USBPacket *p);
void usb_combined_packet_cancel(USBDevice *dev, USBPacket *p);
void usb_pick_speed(USBPort *port);
void usb_attach(USBPort *port);
void usb_detach(USBPort *port);
void usb_port_reset(USBPort *port);