* [Qemu-devel] [PATCH V2] Re-attach usb device to kernel while usb_host_open fails
@ 2015-06-24 5:40 Lin Ma
2015-06-25 6:29 ` Gerd Hoffmann
0 siblings, 1 reply; 2+ messages in thread
From: Lin Ma @ 2015-06-24 5:40 UTC (permalink / raw)
To: arei.gonglei, qemu-devel, kraxel; +Cc: Lin Ma
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
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2015-06-24 5:40 [Qemu-devel] [PATCH V2] Re-attach usb device to kernel while usb_host_open fails Lin Ma
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