tree 962f7918afbb38a298c55a0c1307253e579e1c8a
parent 9dcffd99d0b1c0c1b8b2c0f85d240e791eca1055
author Mark Lord <liml@rtr.ca> 1210771170 -0400
committer Jeff Garzik <jgarzik@redhat.com> 1211232477 -0400

sata_mv: fis irq register fixes

Fix handling of the FIS_IRQ_CAUSE register in sata_mv.

This register exists *only* on GenIIe devices, so don't bother
writing to it on older chips.  Also, it has to be read/cleared
in mv_err_intr() before clearing the main ERR_IRQ_CAUSE register.

This keeps sata_mv from getting stuck forever on certain error types.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>