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[Qemu-devel] [PATCH 2/3] usb-host: skip reset for untouched devices
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 2/3] usb-host: skip reset for untouched devices |
Date: |
Wed, 22 May 2019 11:47:01 +0200 |
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 <address@hidden>
---
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 67b7465915f5..4e9a45a5d26f 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);
--
2.18.1