@@ -1058,6 +1058,15 @@ static int usb_host_handle_control(USBDevice *dev, USBPacket *p,
ret = usb_host_set_interface(s, index, value);
trace_usb_host_req_emulated(s->bus_num, s->addr, p, ret);
return ret;
+
+ case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
+ if (value == 0) { /* clear halt */
+ int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
+ ioctl(s->fd, USBDEVFS_CLEAR_HALT, &index);
+ clear_halt(s, pid, index & 0x0f);
+ trace_usb_host_req_emulated(s->bus_num, s->addr, p, 0);
+ return 0;
+ }
}
/* The rest are asynchronous */
Most important here is to update our internal endpoint state so we know the endpoint isn't in halted state any more. Without this usb-host tries to clear halt again with the next data transfer submitted. Doing this twice is (a) not correct and (b) confuses some usb devices, rendering them non-functional in the guest. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> --- hw/usb/host-linux.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-)