diff mbox

[06/13] usb-bus: Don't allow attaching a device to a bus with no free ports

Message ID 1308913175-10454-7-git-send-email-kraxel@redhat.com
State New
Headers show

Commit Message

Gerd Hoffmann June 24, 2011, 10:59 a.m. UTC 
From: Hans de Goede <hdegoede@redhat.com>

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb-bus.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index 480956d..0a49921 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -181,6 +181,11 @@  static void do_attach(USBDevice *dev)
                 dev->product_desc);
         return;
     }
+    if (bus->nfree == 0) {
+        fprintf(stderr, "Warning: tried to attach usb device %s to a bus with no free ports\n",
+                dev->product_desc);
+        return;
+    }
     if (dev->port_path) {
         QTAILQ_FOREACH(port, &bus->free, next) {
             if (strcmp(port->path, dev->port_path) == 0) {