[Qemu-ppc] qemu-system-ppc start linux with -cdrom cannot see cdrom

[张磊]

hi,guys,
I'm using qemu emulates powerpc (freescale's e500 core). I tried to add a iso 
image with command "-cdrom file.iso". The linux in qemu starts up ok, but shows 
:
 "Warning: Orphaned drive without device: 
id=ide1-cd0,file=file.iso,if=ide,bus=1,unit=0"
and cannot see cdrome in qemu.
I checked the source code of qemu, this message is in function 
"drive_check_orphaned" of file "blockdev.c", but I have no meaning about this. 
How this comes out ? How to solve this?


thanks

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Ezio