When removing usb on guest via usb_del monitor command, qemu does
not return the control to the host, the only solution user have is to
unplug/plug the device again in order to get the device back to the host
Signed-off-by: Shahar Havivi <shah...@redhat.com>
---
hw/usb-bus.c | 4 ++++
hw/usb.h | 1 +
usb-linux.c | 11 +++++++++++
3 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index ee0e9e3..9781ac6 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -208,6 +208,10 @@ int usb_device_delete_addr(int busnr, int addr)
return -1;
dev = port->dev;
+ if (!strcmp(dev->info->usbdevice_name, "host")) {
+ usb_host_device_release(dev);
+ }
+
qdev_free(&dev->qdev);
return 0;
}
diff --git a/hw/usb.h b/hw/usb.h
index 00d2802..f6f7cc4 100644
--- a/hw/usb.h
+++ b/hw/usb.h
@@ -258,6 +258,7 @@ void usb_send_msg(USBDevice *dev, int msg);
USBDevice *usb_host_device_open(const char *devname);
int usb_host_device_close(const char *devname);
void usb_host_info(Monitor *mon);
+int usb_host_device_release(USBDevice *dev);
/* usb-hid.c */
void usb_hid_datain_cb(USBDevice *dev, void *opaque, void (*datain)(void *));
diff --git a/usb-linux.c b/usb-linux.c
index d0d7cff..9db94dd 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -284,6 +284,17 @@ static void async_cancel(USBPacket *unused, void *opaque)
}
}
+/* release usb device, return control to host */
+int usb_host_device_release(USBDevice *dev)
+{
+ int ret;
+
+ USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
+ ret = ioctl(s->fd, USBDEVFS_RESET);
+
+ return ret;
+}
+
static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
{
int dev_descr_len, config_descr_len;
--
1.6.3.3
