[PATCH] move ->eh_strategy_handler to the transport class

Overriding the whole EH code is a per-transport, not per-host thing.
Move ->eh_strategy_handler to the transport class, same as
->eh_timed_out.

Downside is that scsi_host_alloc can't check for the total lack of EH
anymore, but the transition period from old EH where we needed it is
long gone already.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/scsi/libata-scsi.c

@@ -53,6 +53,7 @@
 typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd);
 static struct ata_device *
 ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev);
+static void ata_scsi_error(struct Scsi_Host *host);
 enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
 
 #define RW_RECOVERY_MPAGE 0x1
@@ -99,6 +100,7 @@ static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
  * It just needs the eh_timed_out hook.
  */
 struct scsi_transport_template ata_scsi_transport_template = {
+	.eh_strategy_handler	= ata_scsi_error,
 	.eh_timed_out		= ata_scsi_timed_out,
 };
 
@@ -772,12 +774,9 @@ enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd)
  *
  *	LOCKING:
  *	Inherited from SCSI layer (none, can sleep)
- *
- *	RETURNS:
- *	Zero.
  */
 
-int ata_scsi_error(struct Scsi_Host *host)
+static void ata_scsi_error(struct Scsi_Host *host)
 {
 	struct ata_port *ap;
 	unsigned long flags;
@@ -805,7 +804,6 @@ int ata_scsi_error(struct Scsi_Host *host)
 	spin_unlock_irqrestore(&ap->host_set->lock, flags);
 
 	DPRINTK("EXIT\n");
-	return 0;
 }
 
 static void ata_eh_scsidone(struct scsi_cmnd *scmd)