1 files changed, 13 insertions, 17 deletions

diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index 71caf2ded6ba..77b06a983fa7 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)
@@ -921,7 +917,7 @@ static void esp_event_queue_full(struct esp *esp, struct esp_cmd_entry *ent)
 static int esp_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 {
         struct scsi_device *dev = cmd->device;
-        struct esp *esp = host_to_esp(dev->host);
+        struct esp *esp = shost_priv(dev->host);
         struct esp_cmd_priv *spriv;
         struct esp_cmd_entry *ent;
 
@@ -2357,7 +2353,7 @@ EXPORT_SYMBOL(scsi_esp_unregister);
 
 static int esp_slave_alloc(struct scsi_device *dev)
 {
-        struct esp *esp = host_to_esp(dev->host);
+        struct esp *esp = shost_priv(dev->host);
         struct esp_target_data *tp = &esp->target[dev->id];
         struct esp_lun_data *lp;
 
@@ -2381,7 +2377,7 @@ static int esp_slave_alloc(struct scsi_device *dev)
 
 static int esp_slave_configure(struct scsi_device *dev)
 {
-        struct esp *esp = host_to_esp(dev->host);
+        struct esp *esp = shost_priv(dev->host);
         struct esp_target_data *tp = &esp->target[dev->id];
         int goal_tags, queue_depth;
 
@@ -2423,7 +2419,7 @@ static void esp_slave_destroy(struct scsi_device *dev)
 
 static int esp_eh_abort_handler(struct scsi_cmnd *cmd)
 {
-        struct esp *esp = host_to_esp(cmd->device->host);
+        struct esp *esp = shost_priv(cmd->device->host);
         struct esp_cmd_entry *ent, *tmp;
         struct completion eh_done;
         unsigned long flags;
@@ -2539,7 +2535,7 @@ out_failure:
 
 static int esp_eh_bus_reset_handler(struct scsi_cmnd *cmd)
 {
-        struct esp *esp = host_to_esp(cmd->device->host);
+        struct esp *esp = shost_priv(cmd->device->host);
         struct completion eh_reset;
         unsigned long flags;
 
@@ -2575,7 +2571,7 @@ static int esp_eh_bus_reset_handler(struct scsi_cmnd *cmd)
 /* All bets are off, reset the entire device.  */
 static int esp_eh_host_reset_handler(struct scsi_cmnd *cmd)
 {
-        struct esp *esp = host_to_esp(cmd->device->host);
+        struct esp *esp = shost_priv(cmd->device->host);
         unsigned long flags;
 
         spin_lock_irqsave(esp->host->host_lock, flags);
@@ -2615,7 +2611,7 @@ EXPORT_SYMBOL(scsi_esp_template);
 
 static void esp_get_signalling(struct Scsi_Host *host)
 {
-        struct esp *esp = host_to_esp(host);
+        struct esp *esp = shost_priv(host);
         enum spi_signal_type type;
 
         if (esp->flags & ESP_FLAG_DIFFERENTIAL)
@@ -2629,7 +2625,7 @@ static void esp_get_signalling(struct Scsi_Host *host)
 static void esp_set_offset(struct scsi_target *target, int offset)
 {
         struct Scsi_Host *host = dev_to_shost(target->dev.parent);
-        struct esp *esp = host_to_esp(host);
+        struct esp *esp = shost_priv(host);
         struct esp_target_data *tp = &esp->target[target->id];
 
         tp->nego_goal_offset = offset;
@@ -2639,7 +2635,7 @@ static void esp_set_offset(struct scsi_target *target, int offset)
 static void esp_set_period(struct scsi_target *target, int period)
 {
         struct Scsi_Host *host = dev_to_shost(target->dev.parent);
-        struct esp *esp = host_to_esp(host);
+        struct esp *esp = shost_priv(host);
         struct esp_target_data *tp = &esp->target[target->id];
 
         tp->nego_goal_period = period;
@@ -2649,7 +2645,7 @@ static void esp_set_period(struct scsi_target *target, int period)
 static void esp_set_width(struct scsi_target *target, int width)
 {
         struct Scsi_Host *host = dev_to_shost(target->dev.parent);
-        struct esp *esp = host_to_esp(host);
+        struct esp *esp = shost_priv(host);
         struct esp_target_data *tp = &esp->target[target->id];
 
         tp->nego_goal_width = (width ? 1 : 0);