Commit a309ee6e authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

usb-hub: report status changes only once 



Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent c24e4aac

hw/usb/dev-hub.c

+5 −1
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ typedef struct USBHubPort { 
    USBPort port;

    uint16_t wPortStatus;

    uint16_t wPortChange;

    uint16_t wPortChange_reported;

} USBHubPort;



typedef struct USBHubState {
@@ -467,9 +468,12 @@ static void usb_hub_handle_data(USBDevice *dev, USBPacket *p) 
            status = 0;

            for(i = 0; i < NUM_PORTS; i++) {

                port = &s->ports[i];

                if (port->wPortChange)

                if (port->wPortChange &&

                    port->wPortChange_reported != port->wPortChange) {

                    status |= (1 << (i + 1));

                }

                port->wPortChange_reported = port->wPortChange;

            }

            if (status != 0) {

                for(i = 0; i < n; i++) {

                    buf[i] = status >> (8 * i);