AHCI - Fix bricking issue with older chipsets on boot.
authorMatthew Dillon <dillon@apollo.backplane.com>
Wed, 19 Aug 2009 07:11:31 +0000 (00:11 -0700)
committerMatthew Dillon <dillon@apollo.backplane.com>
Wed, 19 Aug 2009 07:11:31 +0000 (00:11 -0700)
commit4e21f4dab73c836b48a013b705232779decb6f1a
tree0a11747bf47ec78a1779d769c7505847b85ee519
parent0182b3166e2929d0f1319777d1f6569116337322
AHCI - Fix bricking issue with older chipsets on boot.

* It looks like the use of AHCI_PREG_SCTL_DET_DISABLE, which turns off
  the phy on port, can brick the AHCI chip and even take out the entire
  machine.  This seems to effect Intel chips the most.

  Stop using it entirely.

Reports-from: Rumko, Alexander Polakov
sys/dev/disk/ahci/ahci.c