[PATCH] SCSI: make scsi_implement_eh() generic API for SCSI transports

libata implemented a feature to schedule EH without an associated EH
by manipulating shost->host_eh_scheduled in ata_scsi_schedule_eh()
directly.  Move this function to scsi_error.c and rename it to
scsi_schedule_eh().  It is now an exported API for SCSI transports and
exported via new header file drivers/scsi/scsi_transport_api.h

This patch also de-export scsi_eh_wakeup() which was exported
specifically for ata_scsi_schedule_eh().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 0 insertions, 24 deletions

diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index f036ae4..2007b4b 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -2745,27 +2745,3 @@ void ata_scsi_scan_host(struct ata_port *ap)
 			scsi_scan_target(&ap->host->shost_gendev, 0, i, 0, 0);
 	}
 }
-
-/**
- *	ata_schedule_scsi_eh - schedule EH for SCSI host
- *	@shost:	SCSI host to invoke error handling on.
- *
- *	Schedule SCSI EH without scmd.  This is a hack.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
- **/
-void ata_schedule_scsi_eh(struct Scsi_Host *shost)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(shost->host_lock, flags);
-
-	if (scsi_host_set_state(shost, SHOST_RECOVERY) == 0 ||
-	    scsi_host_set_state(shost, SHOST_CANCEL_RECOVERY) == 0) {
-		shost->host_eh_scheduled++;
-		scsi_eh_wakeup(shost);
-	}
-
-	spin_unlock_irqrestore(shost->host_lock, flags);
-}