Did the bisect, it points to this commit:
1556594f913fa81d008cecfe46d7211c919a853 is first bad commit
commit 31556594f913fa81d008cecfe46d7211c919a853
Author: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Date: Thu Oct 25 01:33:26 2007 -0400
[libata] AHCI: add hw link power management support
Booting any kernel after this commit fails suspending to ram, it just
sits there forever.
--
Jens Axboe
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