From: Tejun Heo <htejun@gmail.com>
Date: Mon, 15 May 2006 11:58:12 +0000 (+0900)
Subject: [PATCH] libata-eh-fw: update ata_scsi_error() for new EH
X-Git-Tag: v2.6.18-rc1~1079^2~98^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad9e27624479bd167dd7eac0cea4bb3ad13bc926;p=pandora-kernel.git

[PATCH] libata-eh-fw: update ata_scsi_error() for new EH

Update ata_scsi_error() for new EH.  ata_scsi_error() is responsible
for claiming timed out qcs and invoking ->error_handler in safe and
synchronized manner.  As the state of the controller is unknown if a
qc has timed out, the port is frozen in such cases.

Note that ata_scsi_timed_out() isn't used for new EH.  This is because
a timed out qc cannot be claimed by EH without freezing the port and
freezing the port in ata_scsi_timed_out() results in unnecessary
abortion of other active qcs.  ata_scsi_timed_out() can be removed
once all drivers are converted to new EH.

While at it, add 'TODO: kill' comments to old EH functions.

Signed-off-by: Tejun Heo <htejun@gmail.com>
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