From: Catalin Marinas <catalin.marinas@arm.com>
Date: Thu, 10 Jun 2010 16:02:12 +0000 (+0100)
Subject: sata_sil24: Use memory barriers before issuing commands
X-Git-Tag: v2.6.35-rc3~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1082345290dbc66c19877662cb24c18ee4ae1296;p=pandora-kernel.git

sata_sil24: Use memory barriers before issuing commands

The data in the cmd_block buffers may reach the main memory after the
writel() to the device ports. This patch introduces two calls to wmb()
to ensure the relative ordering.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Colin Tuckley <colin.tuckley@arm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

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