Description of problem:

Using qemu-xhci controller to boot up a usb-storage device, there will be an input/output error while reading from it. 

Version-Release number of selected component (if applicable):

host kernel:4.18.0-224.el8.ppc64le
qemu:qemu-kvm-5.0.0-0.scrmod+el8.3.0+7308+053b39e7.wrb200708.ppc64le
guest kernel:4.18.0-224.el8.ppc64le

How reproducible:
100%

Steps to Reproduce:
1.Boot up with commands including qemu-xhci and a usb-storage:
    /usr/libexec/qemu-kvm \
        -name 'vm1'  \
        -sandbox on  \
        -machine pseries \
        -nodefaults \
        -device VGA,bus=pci.0,addr=0x10 \
        -m 4G,slots=4,maxmem=8G \
        -smp 4,maxcpus=8,cores=2,threads=4,sockets=1  \
        -cpu 'host' \
        -chardev socket,id=chardev_serial0,server,path=/tmp/slofpath,nowait \
        -device spapr-vty,id=serial0,reg=0x30000000,chardev=chardev_serial0 \
        -device pci-bridge,bus=pci.0,id=bridge3,chassis_nr=3 \
        -device qemu-xhci,id=usb1,bus=bridge3,addr=0x11 \
        -device pci-bridge,bus=pci.0,id=bridge1,chassis_nr=1 \
        -blockdev driver=file,cache.direct=on,cache.no-flush=off,filename=rhel830.qcow2,node-name=drive_blk1 \
        -blockdev driver=qcow2,node-name=drive_blk11,file=drive_blk1 \
        -device virtio-blk-pci,scsi=off,drive=drive_blk11,id=blk-disk1,bus=bridge1,addr=0x9 \
        -blockdev node-name=file_image2,driver=file,aio=threads,filename=storage.qcow2,cache.direct=off,cache.no-flush=on \
        -blockdev node-name=drive_image2,driver=qcow2,cache.direct=off,cache.no-flush=on,file=file_image2 \
        -device usb-storage,id=image2,drive=drive_image2,write-cache=on \
        -device virtio-net-pci,mac=9a:4c:4d:4e:4f:60,id=idtniYmJ,vectors=4,netdev=idG7NvsN,bus=pci.0,addr=0x5 \
        -netdev tap,id=idG7NvsN,vhost=on,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown \
        -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=3  \
        -device usb-kbd,id=usb-kbdppc1,bus=usb1.0,port=2  \
        -vnc :31  \
        -qmp tcp:0:4441,server,nowait \
        -rtc base=utc,clock=host  \
        -boot menu=off,order=cdn,once=c,strict=off  \
        -enable-kvm \
        -monitor stdio \
2.boot up guest and use dd to test if the USB device works well
[root@localhost ~]# lsblk
NAME          MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda             8:0    0   5G  0 disk 
vda           252:0    0  20G  0 disk 
├─vda1        252:1    0   4M  0 part 
├─vda2        252:2    0   1G  0 part /boot
└─vda3        252:3    0  19G  0 part 
  ├─rhel-root 253:0    0  17G  0 lvm  /
  └─rhel-swap 253:1    0   2G  0 lvm  [SWAP]

[root@localhost ~]# dd if=/dev/sda of=/dev/null bs=1M count=10
dd: error reading '/dev/sda': Input/output error
0+0 records in
0+0 records out
0 bytes copied, 3.83441 s, 0.0 kB/s
[root@localhost ~]# dd of=/dev/sda if=/dev/zero bs=1M count=10
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.0421101 s, 249 MB/s

3.

Actual results:
USB storage work with no error while reading/writing

Expected results:
USB storage work with an error while reading

Additional info:

Have been tried in P8 host with host kernel version by 4.18.0-221.el8.ppc64le, and same qemu version. There's no error occurred.