[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>

diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index 2321f3d..c1d50e6 100644 (file)
--- 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)