[SCSI] esp_scsi: convert to use the data buffer accessors

- convert to use the new accessors for the sg lists and the
parameters.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 3 insertions, 7 deletions

diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index 2321f3db4623..c1d50e669c43 100644
--- a/drivers/scsi/esp_scsi.c
+++ b/drivers/scsi/esp_scsi.c
@@ -324,17 +324,14 @@ static void esp_reset_esp(struct esp *esp)
 static void esp_map_dma(struct esp *esp, struct scsi_cmnd *cmd)
 {
         struct esp_cmd_priv *spriv = ESP_CMD_PRIV(cmd);
-        struct scatterlist *sg = cmd->request_buffer;
+        struct scatterlist *sg = scsi_sglist(cmd);
         int dir = cmd->sc_data_direction;
         int total, i;
 
         if (dir == DMA_NONE)
                 return;
 
-        BUG_ON(cmd->use_sg == 0);
-
-        spriv->u.num_sg = esp->ops->map_sg(esp, sg,
-                                           cmd->use_sg, dir);
+        spriv->u.num_sg = esp->ops->map_sg(esp, sg, scsi_sg_count(cmd), dir);
         spriv->cur_residue = sg_dma_len(sg);
         spriv->cur_sg = sg;
 
@@ -407,8 +404,7 @@ static void esp_unmap_dma(struct esp *esp, struct scsi_cmnd *cmd)
         if (dir == DMA_NONE)
                 return;
 
-        esp->ops->unmap_sg(esp, cmd->request_buffer,
-                           spriv->u.num_sg, dir);
+        esp->ops->unmap_sg(esp, scsi_sglist(cmd), spriv->u.num_sg, dir);
 }
 
 static void esp_save_pointers(struct esp *esp, struct esp_cmd_entry *ent)