From a70757ba9a3719f99760713c3b72134b21016c6e Mon Sep 17 00:00:00 2001
From: Anil Ravindranath <anil_ravindranath@pmc-sierra.com>
Date: Thu, 17 Dec 2009 14:51:53 -0800
Subject: [PATCH] [SCSI] pmcraid: fix to avoid twice scsi_dma_unmap for a
 command

For a particular driver error condition, driver was doing double
scsi_dma_unmaps. Driver was calling scsi_dma_unmap in
pmcraid_error_handler and return 0. This pmcraid_error_handler is called
by pmcraid_io_done which will do scsi_dma_unmap again when it has
return 0 from pmcraid_error_handler.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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