lkml.org 
[lkml]   [2009]   [Jan]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 13/85] SCSI: eata: fix the data buffer accessors conversion regression
2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------
From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

commit 20c09df7eb9c92a40e0ecf654b6e8f14c8583b9e upstream.

This fixes the regression introduced by the commit
58e2a02eb18393e76a469580fedf7caec190eb5e (eata: convert to use the
data buffer accessors), reported:

http://marc.info/?t=122987621300006&r=1&w=2
- fix DMA_NONE handling in map_dma()

- this driver can't use scsi_dma_map since host->shost_gendev.parent
is not set properly (it uses scsi_register).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reported-by: Arthur Marsh <arthur.marsh@internode.on.net>
Tested-by: Arthur Marsh <arthur.marsh@internode.on.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/scsi/eata.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
--- a/drivers/scsi/eata.c
+++ b/drivers/scsi/eata.c
@@ -1626,8 +1626,15 @@ static void map_dma(unsigned int i, stru

cpp->sense_len = SCSI_SENSE_BUFFERSIZE;

- count = scsi_dma_map(SCpnt);
- BUG_ON(count < 0);
+ if (!scsi_sg_count(SCpnt)) {
+ cpp->data_len = 0;
+ return;
+ }
+
+ count = pci_map_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
+ pci_dir);
+ BUG_ON(!count);
+
scsi_for_each_sg(SCpnt, sg, count, k) {
cpp->sglist[k].address = H2DEV(sg_dma_address(sg));
cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg));
@@ -1655,7 +1662,9 @@ static void unmap_dma(unsigned int i, st
pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr),
DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);

- scsi_dma_unmap(SCpnt);
+ if (scsi_sg_count(SCpnt))
+ pci_unmap_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
+ pci_dir);

if (!DEV2H(cpp->data_len))
pci_dir = PCI_DMA_BIDIRECTIONAL;


\
 
 \ /
  Last update: 2009-01-15 23:11    [from the cache]
©2003-2011 Jasper Spaans