Created attachment 491452 [details]
screenshot

Description of problem:
The following message display and the guest stay on this stage for a long time after guest-rhel5 resume from S4. pls refer to screenshot.
pnp: Failed to activate device 00:02.
pnp: Failed to activate device 00:03.
pnp: Failed to activate device 00:05.
pnp: Failed to activate device 00:06.

Version-Release number of selected component (if applicable):
guest kernel: 2.6.18-255.el5
host kernel: 2.6.32-128.el6.x86_64
qemu-kvm-0.12.1.2-2.153.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1. boot guest with ide+rtl8139 by the following cmd-line
2. do s4 -- echo disk > /sys/power/state
3. start the guest again with the same cmd-line
  
Actual results:
The error message display and the guest stay on this stage for a long time,
then it boot up. But it's network has problem, cannot 'ping' the other host. 
pnp: Failed to activate device 00:02.
pnp: Failed to activate device 00:03.
pnp: Failed to activate device 00:05.
pnp: Failed to activate device 00:06.

Expected results:
no error message

Additional info:
cmd-line:
/usr/libexec/qemu-kvm -drive file=/home/kvm_autotest_root/images/RHEL-Server-5.6-64-virtio.raw,index=0,if=none,id=drive-ide0-0-0,media=disk,cache=none,format=raw,aio=native -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -device rtl8139,netdev=idYE7II3,mac=9a:d4:58:7d:03:b4,id=ndev00idYE7II3,bus=pci.0,addr=0x3 -netdev tap,id=idYE7II3,ifname=t0-034719-x0nn,script=/etc/qemu-ifup-switch,downscript=no -m 512 -smp 2,cores=1,threads=1,sockets=1 -cpu cpu64-rhel6,+sse2,+x2apic -vnc :1 -rtc base=localtime,clock=host,driftfix=none -M rhel6.1.0 -boot order=cdn,once=c,menu=off -usbdevice tablet -enable-kvm -monitor stdio

The guest's dmesg information after resume from s4 saved in attachment.
Attached the serial information.