From 8454e9888cb0316dd296fd5d47c612248ed5e1d1 Mon Sep 17 00:00:00 2001
From: adam radford <aradford@gmail.com>
Date: Tue, 5 May 2009 11:45:37 -0700
Subject: [PATCH] [SCSI] 3w-9xxx: scsi_dma_unmap fix

This patch fixes the following regression the occurred during the
scsi_dma_map()/unmap() changes:

3w-9xxx 0001:45:00.0: DMA-API: device driver tries to free DMA memory
it has not allocated [device address=0x0000000000000000] [size=36
bytes]

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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