ATA_PERIODIC_POLL on ATA_I82801HBM_S1 causes lockups

Rick van der Zwet info at
Tue Jun 14 06:16:58 UTC 2011

The ICH8M found in the MacBookPro4,1 has an known issue [1] which
locks up when enabling the periodic poll using sidpr (introduced a
``little'' while ago in r214016), making it impossible to boot.

Attached patch disables the polling and thus fixes the issue.

Br. /Rick
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