isci: fix dma_unmap_sg usage
authorDan Williams <dan.j.williams@intel.com>
Fri, 17 Jun 2011 17:40:43 +0000 (10:40 -0700)
committerDan Williams <dan.j.williams@intel.com>
Sun, 3 Jul 2011 11:04:51 +0000 (04:04 -0700)
commitddcc7e347a891937be65358b43f40b7f81185f8f
tree35492d904678bb36560efa05dd1a474e9ee78b36
parent5edc33480c1c363ab361a881f2957b9fba5185cf
isci: fix dma_unmap_sg usage

One bug and a cleanup:
1/ Fix cases where we were unmapping invalid addresses (smp requests were
   being unmapped)

[  604.662770] ------------[ cut here ]------------
[  604.668026] WARNING: at lib/dma-debug.c:800 check_unmap+0x418/0x740()
[  604.675315] Hardware name: SandyBridge Platform
[  604.680465] isci 0000:03:00.0: DMA-API: device driver tries to free an invalid DMA memory address

2/ The unmap routine is too large to be an inline function, and
   isci_request_io_request_get_next_sge is unused.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
drivers/scsi/isci/request.c
drivers/scsi/isci/request.h