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| author | Gerd Hoffmann <kraxel@redhat.com> | 2013-03-20 12:40:11 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2013-04-03 11:39:43 +0200 |
| commit | a309ee6e0a256f690760abfba44fceaa52a7c2f3 (patch) | |
| tree | 8128df78194b6c23474c8abcaabad5fcace11fa1 | |
| parent | c24e4aac3bd7dd6591e26b77985e5d3915ecbe4b (diff) | |
| download | qemu-a309ee6e0a256f690760abfba44fceaa52a7c2f3.tar.gz qemu-a309ee6e0a256f690760abfba44fceaa52a7c2f3.tar.bz2 qemu-a309ee6e0a256f690760abfba44fceaa52a7c2f3.zip | |
usb-hub: report status changes only once
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | hw/usb/dev-hub.c | 6 |
1 files changed, 5 insertions, 1 deletions
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++) { |