[Qemu-devel] Wake OHCI up on device attach.

[Qemu-devel] Wake OHCI up on device attach.

[Andrzej Zaborowski]

This makes linux detect new devices when they're attached with
"usb_add", if anyone cares.

OHCI manual (I checked in PXA27x manual to be exact) says a remote
wake-up should be sent when a device is attached and the host was
suspended.  A more general fix (but only UHCI) was posted in
http://lists.gnu.org/archive/html/qemu-devel/2006-04/msg00576.html

---
 hw/usb-ohci.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/hw/usb-ohci.c b/hw/usb-ohci.c
index de113e9..9e4289a 100644
--- a/hw/usb-ohci.c
+++ b/hw/usb-ohci.c
@@ -295,6 +295,11 @@ static void ohci_attach(USBPort *port1,
         else
             port->ctrl &= ~OHCI_PORT_LSDA;
         port->port.dev = dev;
+
+        /* notify of remote-wakeup */
+        if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND)
+            ohci_set_interrupt(s, OHCI_INTR_RD);
+
         /* send the attach message */
         usb_send_msg(dev, USB_MSG_ATTACH);
         dprintf("usb-ohci: Attached port %d\n", port1->index);
-- 
1.4.3.2