linux-kernel - [PATCH 1/1] scsi: storvsc: Support manual scan of FC hosts on Hyper-V

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Message-Id: <1457819568-6586-1-git-send-email-kys@microsoft.com>
Date:	Sat, 12 Mar 2016 13:52:48 -0800
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, ohering@...e.com,
	jbottomley@...allels.com, hch@...radead.org,
	linux-scsi@...r.kernel.org, apw@...onical.com, vkuznets@...hat.com,
	jasowang@...hat.com, martin.petersen@...cle.com, hare@...e.de
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 1/1] scsi: storvsc: Support manual scan of FC hosts on Hyper-V

The default user scan function associated with FC (fc_user_scan)
is not suitable for FC hosts on Hyper-V since we don't have
an rport associated with FC host on Hyper-V . Set it to NULL so we can
support manual scan of FC targets on Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Tested-by: Long Li <longli@...rosoft.com>
Reviewed-by: Long Li <longli@...rosoft.com>
---
 drivers/scsi/storvsc_drv.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 132b168..8aec590 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1776,6 +1776,12 @@ static int __init storvsc_drv_init(void)
 	 * Install Hyper-V specific timeout handler.
 	 */
 	fc_transport_template->eh_timed_out = storvsc_eh_timed_out;
+	/*
+	 * The default user scan function associated with FC (fc_user_scan)
+	 * is not suitable for FC hosts on Hyper-V. Set it to NULL so we can
+	 * support manual scan of FC targets on Hyper-V.
+	 */
+	fc_transport_template->user_scan = NULL;
 #endif
 
 	ret = vmbus_driver_register(&storvsc_drv);
-- 
1.7.4.1