Hi Flavio,
Could you try the attached patch with your SATA disk and confirm the warning message is printed correctly?
You can download kernel which includes the patch from the following brew.
http://brewweb.devel.redhat.com/brew/taskinfo?taskID=1598952
Thanks,
Takao Indoh
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.
http://rhn.redhat.com/errata/RHSA-2009-1024.html