From a309ee6e0a256f690760abfba44fceaa52a7c2f3 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 20 Mar 2013 12:40:11 +0100 Subject: usb-hub: report status changes only once Signed-off-by: Gerd Hoffmann --- hw/usb/dev-hub.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'hw/usb/dev-hub.c') diff --git a/hw/usb/dev-hub.c b/hw/usb/dev-hub.c index a5f092bfee..0b71abd028 100644 --- a/hw/usb/dev-hub.c +++ b/hw/usb/dev-hub.c @@ -33,6 +33,7 @@ typedef struct USBHubPort { USBPort port; uint16_t wPortStatus; uint16_t wPortChange; + uint16_t wPortChange_reported; } USBHubPort; typedef struct USBHubState { @@ -467,8 +468,11 @@ 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++) { -- cgit v1.2.1