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Re: [Qemu-devel] [PATCH] usb: change VID/PID for usb-hub and usb-msd to

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH] usb: change VID/PID for usb-hub and usb-msd to prevent conflict
Date: Thu, 15 Sep 2011 18:06:17 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.22) Gecko/20110904 Red Hat/3.1.14-1.el6_1 Thunderbird/3.1.14 
On 09/15/11 05:25, Roy Tam wrote:

Some USB drivers, for example USBASPI.SYS, will skip different type of
device which has same VID/PID. The following patch helps preventing
usb-msd being skipped by the driver.


How and why did you pick those IDs?


  static const USBDesc desc_hub = {
      .id = {
-        .idVendor          = 0,
-        .idProduct         = 0,
+        .idVendor          = 0x0409,
+        .idProduct         = 0x55aa,


lsusb says: Bus 004 Device 002: ID 0409:55aa NEC Corp. Hub

Looks sensible.  Is that actually a USB 1.1 Hub?


  static const USBDesc desc = {
      .id = {
-        .idVendor          = 0,
-        .idProduct         = 0,
+        .idVendor          = 0x46f4,
+        .idProduct         = 0x0001,


lsusb doesn't find those IDs in the database.

cheers,
  Gerd
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