I believe that the 2011 MacBook Pro do not use the faulty chipsets, but I could be mistaken.
Its my understanding that the faulty chipsets are Cougar Point B2 stepping. Intel solution is to release a revised Cougar Point chipset with B3 stepping. Specifically the B3 stepping has a minor metal layer change from B2 to B3 improving lifetime wear out and no change to functionality or design specification (Intel) thus fixing the problem with SATA ports 2 through 5. Browsing through ifixit teardown guide reveals that the chipset on the mainboard is an Intel BD82HM65 Platform Controller Hub. A simple Google search of the controller hub directs you to Intel own website. Spec information from Intel reveals that this hub is B3 stepping.
Its my understanding that the faulty chipsets are Cougar Point B2 stepping. Intel solution is to release a revised Cougar Point chipset with B3 stepping. Specifically the B3 stepping has a minor metal layer change from B2 to B3 improving lifetime wear out and no change to functionality or design specification (Intel) thus fixing the problem with SATA ports 2 through 5. Browsing through ifixit teardown guide reveals that the chipset on the mainboard is an Intel BD82HM65 Platform Controller Hub. A simple Google search of the controller hub directs you to Intel own website. Spec information from Intel reveals that this hub is B3 stepping.