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authorGerd Hoffmann <kraxel@redhat.com>2019-05-22 11:47:01 +0200
committerGerd Hoffmann <kraxel@redhat.com>2019-05-29 07:03:56 +0200
commit65f14ab98da1da920f98ee8734dc1588b01d6b2b (patch)
tree654cc486a7ff5f93a0e132b5c10dc9e7cd956ac3
parent7ed4657396add28382081a15557c78cd480c1cf1 (diff)
downloadqemu-65f14ab98da1da920f98ee8734dc1588b01d6b2b.zip
usb-host: skip reset for untouched devices
If the guest didn't talk to the device yet, skip the reset. Without this usb-host devices get resetted a number of times at boot time for no good reason. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20190522094702.17619-3-kraxel@redhat.com
-rw-r--r--hw/usb/host-libusb.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index 67b7465915..4e9a45a5d2 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -1459,6 +1459,9 @@ static void usb_host_handle_reset(USBDevice *udev)
if (!s->allow_guest_reset) {
return;
}
+ if (udev->addr == 0) {
+ return;
+ }
trace_usb_host_reset(s->bus_num, s->addr);