[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>
diff --git a/drivers/scsi/in2000.c b/drivers/scsi/in2000.c
index 9c51987..89a57a6 100644
--- a/drivers/scsi/in2000.c
+++ b/drivers/scsi/in2000.c
@@ -370,7 +370,7 @@
*/
if (cmd->use_sg) {
- cmd->SCp.buffer = (struct scatterlist *) cmd->buffer;
+ cmd->SCp.buffer = (struct scatterlist *) cmd->request_buffer;
cmd->SCp.buffers_residual = cmd->use_sg - 1;
cmd->SCp.ptr = (char *) page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset;
cmd->SCp.this_residual = cmd->SCp.buffer->length;