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From 2aed844c2485cfc07bee58f67be64749655f7f12 Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Mon, 3 Jun 2019 13:45:49 +0200
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Subject: [PATCH 6/9] usb-host: skip reset for untouched devices
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Gerd Hoffmann <kraxel@redhat.com>
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Message-id: <20190603134550.30153-4-kraxel@redhat.com>
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Patchwork-id: 88448
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O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 3/4] usb-host: skip reset for untouched devices
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Bugzilla: 1710861
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RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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If the guest didn't talk to the device yet, skip the reset.
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Without this usb-host devices get resetted a number of times
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at boot time for no good reason.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Message-id: 20190522094702.17619-3-kraxel@redhat.com
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(cherry picked from commit 65f14ab98da1da920f98ee8734dc1588b01d6b2b)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/usb/host-libusb.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
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index 0425f0e..1d7e386 100644
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--- a/hw/usb/host-libusb.c
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+++ b/hw/usb/host-libusb.c
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@@ -1450,6 +1450,9 @@ static void usb_host_handle_reset(USBDevice *udev)
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if (!s->allow_guest_reset) {
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return;
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}
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+ if (udev->addr == 0) {
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+ return;
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+ }
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trace_usb_host_reset(s->bus_num, s->addr);
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--
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1.8.3.1
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