[Qemu-devel] [PATCH V2] Re-attach usb device to kernel while usb_host_open fails

[Lin Ma <lma@suse.com>]

Signed-off-by: Lin Ma <lma@suse.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
---
Changes in V2:
* For avoiding regression issue, Dont remove the usb device from global hostdevs list while
usb speed mismatch occurs.

* Add missing R-by information.

 hw/usb/host-libusb.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index bc2944c..11429f5 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -889,6 +889,9 @@ static int usb_host_open(USBHostDevice *s, libusb_device *dev)
 fail:
     trace_usb_host_open_failure(bus_num, addr);
     if (s->dh != NULL) {
+        usb_host_release_interfaces(s);
+        libusb_reset_device(s->dh);
+        usb_host_attach_kernel(s);
         libusb_close(s->dh);
         s->dh = NULL;
         s->dev = NULL;
-- 
2.1.4