linux-kernel - [PATCH 4.4 64/73] qla1280: Dont allocate 512kb of host tags

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Date:	Mon, 16 May 2016 18:15:34 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Johannes Thumshirn <jthumshirn@...e.de>,
	Laura Abbott <labbott@...hat.com>, Michael Reed <mdr@....com>,
	Laurence Oberman <loberman@...hat.com>,
	Lee Duncan <lduncan@...e.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	James Bottomley <jejb@...ux.vnet.ibm.com>
Subject: [PATCH 4.4 64/73] qla1280: Dont allocate 512kb of host tags

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johannes Thumshirn <jthumshirn@...e.de>

commit 2bcbc81421c511ef117cadcf0bee9c4340e68db0 upstream.

The qla1280 driver sets the scsi_host_template's can_queue field to 0xfffff
which results in an allocation failure when allocating the block layer tags
for the driver's queues. This was introduced with the change for host wide
tags in commit 64d513ac31b - "scsi: use host wide tags by default".

Reduce can_queue to MAX_OUTSTANDING_COMMANDS (512) to solve the allocation
error.

Signed-off-by: Johannes Thumshirn <jthumshirn@...e.de>
Fixes: 64d513ac31b - "scsi: use host wide tags by default"
Cc: Laura Abbott <labbott@...hat.com>
Cc: Michael Reed <mdr@....com>
Reviewed-by: Laurence Oberman <loberman@...hat.com>
Reviewed-by: Lee Duncan <lduncan@...e.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: James Bottomley <jejb@...ux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/scsi/qla1280.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/qla1280.c
+++ b/drivers/scsi/qla1280.c
@@ -4214,7 +4214,7 @@ static struct scsi_host_template qla1280
 	.eh_bus_reset_handler	= qla1280_eh_bus_reset,
 	.eh_host_reset_handler	= qla1280_eh_adapter_reset,
 	.bios_param		= qla1280_biosparam,
-	.can_queue		= 0xfffff,
+	.can_queue		= MAX_OUTSTANDING_COMMANDS,
 	.this_id		= -1,
 	.sg_tablesize		= SG_ALL,
 	.use_clustering		= ENABLE_CLUSTERING,