linux-kernel - [PATCH v2 4/4] mptsas: ask for deferred probe

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Message-Id: <1406572110-26823-5-git-send-email-mcgrof@do-not-panic.com>
Date:	Mon, 28 Jul 2014 11:28:30 -0700
From:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
To:	gregkh@...uxfoundation.org
Cc:	tiwai@...e.de, linux-kernel@...r.kernel.org,
	"Luis R. Rodriguez" <mcgrof@...e.com>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Joseph Salisbury <joseph.salisbury@...onical.com>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Tim Gardner <tim.gardner@...onical.com>,
	Pierre Fersing <pierre-fersing@...rref.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Benjamin Poirier <bpoirier@...e.de>,
	Nagalakshmi Nandigama <nagalakshmi.nandigama@...gotech.com>,
	Praveen Krishnamoorthy <praveen.krishnamoorthy@...gotech.com>,
	Sreekanth Reddy <sreekanth.reddy@...gotech.com>,
	Abhijit Mahajan <abhijit.mahajan@...gotech.com>,
	Hariprasad S <hariprasad@...lsio.com>,
	Santosh Rastapur <santosh@...lsio.com>,
	MPT-FusionLinux.pdl@...gotech.com, linux-scsi@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH v2 4/4] mptsas: ask for deferred probe

From: "Luis R. Rodriguez" <mcgrof@...e.com>

Its reported that mptsas can at times take over 30 seconds
to recognize SCSI storage devices [0], this is done on the
driver's probe path. Use the the deferred probe workqueue
to allow long init sequences to complete.

[0] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1276705

Cc: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc: Joseph Salisbury <joseph.salisbury@...onical.com>
Cc: One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
Cc: Tim Gardner <tim.gardner@...onical.com>
Cc: Pierre Fersing <pierre-fersing@...rref.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Benjamin Poirier <bpoirier@...e.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Nagalakshmi Nandigama <nagalakshmi.nandigama@...gotech.com>
Cc: Praveen Krishnamoorthy <praveen.krishnamoorthy@...gotech.com>
Cc: Sreekanth Reddy <sreekanth.reddy@...gotech.com>
Cc: Abhijit Mahajan <abhijit.mahajan@...gotech.com>
Cc: Hariprasad S <hariprasad@...lsio.com>
Cc: Santosh Rastapur <santosh@...lsio.com>
Cc: MPT-FusionLinux.pdl@...gotech.com
Cc: linux-scsi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: netdev@...r.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@...e.com>
---
 drivers/message/fusion/mptsas.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 711fcb5..3859ac3 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -5382,6 +5382,9 @@ MODULE_DEVICE_TABLE(pci, mptsas_pci_table);
 
 
 static struct pci_driver mptsas_driver = {
+	.driver = {
+		.delay_probe = true,
+	},
 	.name		= "mptsas",
 	.id_table	= mptsas_pci_table,
 	.probe		= mptsas_probe,
-- 
2.0.1

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