[SCSI] imm: convert to accessors and !use_sg cleanup

 - convert to accessors and !use_sg cleanup
 - Not ready for sg-chaining

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Tested-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 5 insertions, 8 deletions

diff --git a/drivers/scsi/imm.c b/drivers/scsi/imm.c
index a3d0c6b14958..f97d172844be 100644
--- a/drivers/scsi/imm.c
+++ b/drivers/scsi/imm.c
@@ -837,19 +837,16 @@ static int imm_engine(imm_struct *dev, struct scsi_cmnd *cmd)
 
                 /* Phase 4 - Setup scatter/gather buffers */
         case 4:
-                if (cmd->use_sg) {
-                        /* if many buffers are available, start filling the first */
-                        cmd->SCp.buffer =
-                            (struct scatterlist *) cmd->request_buffer;
+                if (scsi_bufflen(cmd)) {
+                        cmd->SCp.buffer = scsi_sglist(cmd);
                         cmd->SCp.this_residual = cmd->SCp.buffer->length;
                         cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 } else {
-                        /* else fill the only available buffer */
                         cmd->SCp.buffer = NULL;
-                        cmd->SCp.this_residual = cmd->request_bufflen;
-                        cmd->SCp.ptr = cmd->request_buffer;
+                        cmd->SCp.this_residual = 0;
+                        cmd->SCp.ptr = NULL;
                 }
-                cmd->SCp.buffers_residual = cmd->use_sg - 1;
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
                 cmd->SCp.phase++;
                 if (cmd->SCp.this_residual & 0x01)
                         cmd->SCp.this_residual++;