[SCSI] fix up request buffer reference in various scsi drivers

Various scsi drivers use scsi_cmnd.buffer and scsi_cmnd.bufflen in their
queuecommand functions.  Those fields are internal storage for the
midlayer only and are used to restore the original payload after
request_buffer and request_bufflen have been overwritten for EH.  Using
the buffer and bufflen fields means they do very broken things in error
handling.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c
index 58d7e34807aa..3ee4d4d3f445 100644
--- a/drivers/scsi/atp870u.c
+++ b/drivers/scsi/atp870u.c
@@ -473,7 +473,7 @@ go_42:
                          */
                         if (workreq->use_sg) {
                                 pci_unmap_sg(dev->pdev,
-                                        (struct scatterlist *)workreq->buffer,
+                                        (struct scatterlist *)workreq->request_buffer,
                                         workreq->use_sg,
                                         workreq->sc_data_direction);
                         } else if (workreq->request_bufflen &&