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From: Tejun Heo <htejun@gmail.com>
To: Jeff Garzik <jeff@garzik.org>,
	James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Mark Lord <liml@rtr.ca>, Matthew Wilcox <matthew@wil.cx>,
	linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] libata: kill SCSI devices before detaching ata_host
Date: Fri, 07 Mar 2008 12:11:50 +0900	[thread overview]
Message-ID: <47D0B276.1010301@gmail.com> (raw)
In-Reply-To: <47D0B1A4.2040104@gmail.com>

Kill SCSI devices before detaching port.  This makes drives properly
shut down on driver unload.

Signed-off-by: Tejun Heo <htejun@gmail.com>
---
 drivers/ata/libata-core.c |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: work1/drivers/ata/libata-core.c
===================================================================
--- work1.orig/drivers/ata/libata-core.c
+++ work1/drivers/ata/libata-core.c
@@ -7236,6 +7236,14 @@ static void ata_port_detach(struct ata_p
 	if (!ap->ops->error_handler)
 		goto skip_eh;
 
+	/* First, tell all SCSI devices that we're going down.  Note
+	 * that there's a small race window here.  Devices which get
+	 * hotplugged after forget_host but before EH is killed won't
+	 * get shut down by SCSI layer properly and will miss cache
+	 * flush and spin down.
+	 */
+	scsi_forget_host(ap->scsi_host);
+
 	/* tell EH we're leaving & flush EH */
 	spin_lock_irqsave(ap->lock, flags);
 	ap->pflags |= ATA_PFLAG_UNLOADING;

  reply	other threads:[~2008-03-07  3:12 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-22 20:09 ata_ram driver Matthew Wilcox
2008-02-22 21:27 ` Mark Lord
2008-03-06  8:21   ` Tejun Heo
2008-03-06 15:28     ` James Bottomley
2008-03-06 23:55       ` Tejun Heo
2008-03-07  0:01         ` James Bottomley
2008-03-07  0:13           ` Tejun Heo
2008-03-07  0:22             ` James Bottomley
2008-03-07  0:28               ` Tejun Heo
2008-03-07  0:39                 ` James Bottomley
2008-03-07  0:43                   ` Tejun Heo
2008-03-07  3:08                     ` [PATCH 1/2] scsi: export scsi_forget_host() Tejun Heo
2008-03-07  3:11                       ` Tejun Heo [this message]
2008-03-07  2:16                 ` ata_ram driver Jeff Garzik
2008-03-07  2:44                   ` James Bottomley

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