[Qemu-devel] Re: [patch 2/3] support for UHCI suspend / remote wake up

[Gerd Hoffmann]

  Hi,

              port->ctrl = (port->ctrl&  0x01fb) | (val&  ~0x01fb);
              /* some bits are reset when a '1' is written to them */
              port->ctrl&= ~(val&  0x000a);
+            port->ctrl&= ~(port->ctrl&  0x0040); /* clear port resume detected 
*/

Removing the port resume bit from the readonly mask works better than 
the clear-on-any-write hack ;)

cheers,
  Gerd