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authorChristoph Hellwig <hch@lst.de>2006-06-03 13:21:13 +0200
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-06 11:07:25 -0400
commit5d5ff44fe6775ccb922fd1f7d478b2ba9ca95068 (patch)
treed8569caefe1cb5ecced30929ef98d3e1fe642425 /drivers/scsi/ncr53c8xx.c
parente4a082c7c1f9a7b11fece6918e7ee5519b39ac46 (diff)
downloadlinux-5d5ff44fe6775ccb922fd1f7d478b2ba9ca95068.tar.bz2
[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>
Diffstat (limited to 'drivers/scsi/ncr53c8xx.c')
-rw-r--r--drivers/scsi/ncr53c8xx.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c
index 22f913127f08..6ab035590ee6 100644
--- a/drivers/scsi/ncr53c8xx.c
+++ b/drivers/scsi/ncr53c8xx.c
@@ -529,7 +529,7 @@ static void __unmap_scsi_data(struct device *dev, struct scsi_cmnd *cmd)
{
switch(cmd->__data_mapped) {
case 2:
- dma_unmap_sg(dev, cmd->buffer, cmd->use_sg,
+ dma_unmap_sg(dev, cmd->request_buffer, cmd->use_sg,
cmd->sc_data_direction);
break;
case 1:
@@ -564,7 +564,7 @@ static int __map_scsi_sg_data(struct device *dev, struct scsi_cmnd *cmd)
if (cmd->use_sg == 0)
return 0;
- use_sg = dma_map_sg(dev, cmd->buffer, cmd->use_sg,
+ use_sg = dma_map_sg(dev, cmd->request_buffer, cmd->use_sg,
cmd->sc_data_direction);
cmd->__data_mapped = 2;
cmd->__data_mapping = use_sg;
@@ -7697,7 +7697,7 @@ static int ncr_scatter(struct ncb *np, struct ccb *cp, struct scsi_cmnd *cmd)
if (!use_sg)
segment = ncr_scatter_no_sglist(np, cp, cmd);
else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) {
- struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
+ struct scatterlist *scatter = (struct scatterlist *)cmd->request_buffer;
struct scr_tblmove *data;
if (use_sg > MAX_SCATTER) {