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[2/4] usb-bus: Don't allow speed mismatch while attaching devices

Message ID 1306834783-13070-3-git-send-email-hdegoede@redhat.com
State New
Headers show

Commit Message

Hans de Goede May 31, 2011, 9:39 a.m. UTC 
---
 hw/usb-bus.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
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Patch

diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index 2ae2678..1817d5c 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -200,6 +200,11 @@  static int do_attach(USBDevice *dev)
     } else {
         port = QTAILQ_FIRST(&bus->free);
     }
+    if (!(port->speedmask & dev->speedmask)) {
+        fprintf(stderr, "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);