From: Tejun Heo <htejun@gmail.com>
Date: Fri, 4 Aug 2006 18:59:11 +0000 (+0900)
Subject: [PATCH] libata: fix ata_port_detach() for old EH ports
X-Git-Tag: firefly_0821_release~33853^2~9^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c3cf30a989efec8144225517e0b2f82c955e3966;p=firefly-linux-kernel-4.4.55.git

[PATCH] libata: fix ata_port_detach() for old EH ports

ata_prot_detach() did nothing for old EH ports and thus SCSI hosts
associated with those ports are left dangling after they are detached
leaving stale devices and causing oops eventually.  Make
ata_port_detach() remove SCSI hosts for old EH ports.

Signed-off-by: Tejun Heo <htejun@gmail.com>
---

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 386e5f21e191..bca92dd3a454 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -5558,7 +5558,7 @@ void ata_port_detach(struct ata_port *ap)
 	int i;
 
 	if (!ap->ops->error_handler)
-		return;
+		goto skip_eh;
 
 	/* tell EH we're leaving & flush EH */
 	spin_lock_irqsave(ap->lock, flags);
@@ -5594,6 +5594,7 @@ void ata_port_detach(struct ata_port *ap)
 	cancel_delayed_work(&ap->hotplug_task);
 	flush_workqueue(ata_aux_wq);
 
+ skip_eh:
 	/* remove the associated SCSI host */
 	scsi_remove_host(ap->host);
 }