diff options
| author | Christoph Hellwig <hch@lst.de> | 2006-06-03 13:21:13 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-06 11:07:25 -0400 |
| commit | 5d5ff44fe6775ccb922fd1f7d478b2ba9ca95068 (patch) | |
| tree | d8569caefe1cb5ecced30929ef98d3e1fe642425 /drivers/block/cciss_scsi.c | |
| parent | e4a082c7c1f9a7b11fece6918e7ee5519b39ac46 (diff) | |
[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/block/cciss_scsi.c')
| -rw-r--r-- | drivers/block/cciss_scsi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c index 597c007fe81b..afdff32f6724 100644 --- a/drivers/block/cciss_scsi.c +++ b/drivers/block/cciss_scsi.c @@ -578,7 +578,7 @@ complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag) if (cmd->use_sg) { pci_unmap_sg(ctlr->pdev, - cmd->buffer, cmd->use_sg, + cmd->request_buffer, cmd->use_sg, cmd->sc_data_direction); } else if (cmd->request_bufflen) { @@ -1210,7 +1210,7 @@ cciss_scatter_gather(struct pci_dev *pdev, struct scsi_cmnd *cmd) { unsigned int use_sg, nsegs=0, len; - struct scatterlist *scatter = (struct scatterlist *) cmd->buffer; + struct scatterlist *scatter = (struct scatterlist *) cmd->request_buffer; __u64 addr64; /* is it just one virtual address? */ @@ -1232,7 +1232,7 @@ cciss_scatter_gather(struct pci_dev *pdev, } /* else, must be a list of virtual addresses.... */ else if (cmd->use_sg <= MAXSGENTRIES) { /* not too many addrs? */ - use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, + use_sg = pci_map_sg(pdev, cmd->request_buffer, cmd->use_sg, cmd->sc_data_direction); for (nsegs=0; nsegs < use_sg; nsegs++) { |