From 18143137f8f8924eecea902867546c6beb64ff71 Mon Sep 17 00:00:00 2001 Message-Id: <18143137f8f8924eecea902867546c6beb64ff71.1369821827.git.minovotn@redhat.com> In-Reply-To: <2675121a5ff1ee361e9f5d33b9e8a97e4d65114f.1369821827.git.minovotn@redhat.com> References: <2675121a5ff1ee361e9f5d33b9e8a97e4d65114f.1369821827.git.minovotn@redhat.com> From: Gerd Hoffmann Date: Mon, 13 May 2013 15:21:44 +0200 Subject: [PATCH 2/2] usb-hub: report status changes only once RH-Author: Gerd Hoffmann Message-id: <1368458504-16570-3-git-send-email-kraxel@redhat.com> Patchwork-id: 51334 O-Subject: [RHEL-6.5 qemu-kvm PATCH 2/2] usb-hub: report status changes only once Bugzilla: 905851 RH-Acked-by: Laszlo Ersek RH-Acked-by: Paolo Bonzini RH-Acked-by: Hans de Goede Signed-off-by: Gerd Hoffmann (cherry picked from commit a309ee6e0a256f690760abfba44fceaa52a7c2f3) --- hw/usb-hub.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) Signed-off-by: Michal Novotny --- hw/usb-hub.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/hw/usb-hub.c b/hw/usb-hub.c index cf5f401..4457024 100644 --- a/hw/usb-hub.c +++ b/hw/usb-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 { @@ -416,8 +417,11 @@ static int 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++) { -- 1.7.11.7