From: Tejun Heo <htejun@gmail.com>
Date: Tue, 11 Apr 2006 13:32:19 +0000 (+0900)
Subject: [PATCH] sata_sil24: implement loss of completion interrupt on PCI-X errta fix
X-Git-Tag: v2.6.18-rc1~1079^2~111
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37024e8ee0d8dbcd0c2634192cb3836549db054e;p=pandora-kernel.git

[PATCH] sata_sil24: implement loss of completion interrupt on PCI-X errta fix

SiI3124 might lose completion interrupt if completion interrupt occurs
shortly after SLOT_STAT register is read for the previous completion
interrupt if it is operating in PCI-X mode.

This currently doesn't trigger as libata never queues more than one
command, but it will with NCQ changes.  This patch implements the
workaround - turning on WoC and explicitly clearing interrupt.

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