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Corresponding to flashrom svn r1588.

This is based on the idea from the "Make satasii driver more robust" patch
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

It factors out the wait loop and replaces all potential endless
loops instead of just a few.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>