From 90f625449db6c74b8fc5ea29f7d0f0e1ead22203 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 2 Sep 2011 12:17:47 +0200 Subject: [PATCH 01/13] usb-bus: Don't allow speed mismatch while attaching devices RH-Author: Gerd Hoffmann Message-id: <1314965871-32485-2-git-send-email-kraxel@redhat.com> Patchwork-id: 32200 O-Subject: [RHEL-6.2 kvm PATCH 1/5] usb-bus: Don't allow speed mismatch while attaching devices Bugzilla: 728120 RH-Acked-by: Hans de Goede RH-Acked-by: Jes Sorensen RH-Acked-by: Kevin Wolf From: Hans de Goede Signed-off-by: Gerd Hoffmann (cherry picked from commit bf5547f5365c1bfeba9d5c3e87653b9803a875a5) bugzilla: 728120 - print error on usb speed mismatch between device and bus/port --- hw/usb-bus.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) Signed-off-by: Michal Novotny --- hw/usb-bus.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/hw/usb-bus.c b/hw/usb-bus.c index 4259db4..6461709 100644 --- a/hw/usb-bus.c +++ b/hw/usb-bus.c @@ -231,6 +231,11 @@ static int do_attach(USBDevice *dev) } else { port = QTAILQ_FIRST(&bus->free); } + if (!(port->speedmask & dev->speedmask)) { + error_report("Warning: speed mismatch trying to attach usb device %s to bus %s\n", + dev->product_desc, bus->qbus.name); + return -1; + } dev->attached++; QTAILQ_REMOVE(&bus->free, port, next); -- 1.7.4.4