tree 6acfd767e12c93b9b710d6b90b47f630fcbecbc2
parent 2044470cccec1bfe6bb819027975df302ff43bf8
author Tejun Heo <htejun@gmail.com> 1142134475 +0900
committer Jeff Garzik <jeff@garzik.org> 1142185871 -0500

[PATCH] libata: check Word 88 validity in ata_id_xfer_mask()

Check bit 2 of Word 53 for Word 88 validity before using Word 88 to
determine UDMA mask.  Note that the original xfer mask implementation
using ata_get_mode_mask() didn't consider bit 2 of Word 53.  This
patch introduces different (correct) behavior.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>