[PATCH] ahci: fix status register check in ahci_softreset
authorTejun Heo <htejun@gmail.com>
Wed, 1 Nov 2006 08:19:18 +0000 (17:19 +0900)
committerJeff Garzik <jeff@garzik.org>
Wed, 1 Nov 2006 09:20:45 +0000 (04:20 -0500)
commit1244a19cde42c268aa159d264fc2df072a3ff82f
tree8ec73ccd9bc59b221d8bd9b315656ad3b521cfb6
parent30574b61611ccd29677989097f8c8a5d9a73d873
[PATCH] ahci: fix status register check in ahci_softreset

ahci_softreset() used to use ahci_tf_read() which reads D2H_REG area
to check for the Status register.  However, this area is zeroed on
initialization and not set by initial signature FIS.  Replace it with
ahci_check_status().

This bug prevented CLO code from being activated whenever BSY and/or
DRQ is set prior to softreset.  This fix makes
AHCI_FLAG_RESET_NEEDS_CLO flag redundant.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/ahci.c