diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2012-05-08 13:54:45 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-05-14 10:22:20 +0200 |
| commit | a2498f76b8ddd4011645e54faf6eb9281bd6f401 (patch) | |
| tree | e215555bb9f2eabf0da561e740fc34b86e330c4b | |
| parent | 94d1991445fa3582c042ee4e5b72606e2fc39cc2 (diff) | |
| download | qemu-a2498f76b8ddd4011645e54faf6eb9281bd6f401.tar.gz | |
usb-host: handle guest-issued clear halt
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>
| -rw-r--r-- | hw/usb/host-linux.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/usb/host-linux.c b/hw/usb/host-linux.c index 048f8ffa8b..a95b0eda55 100644 --- a/hw/usb/host-linux.c +++ b/hw/usb/host-linux.c @@ -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 */ |