linux-kernel - [PATCH AUTOSEL 4.9 05/18] IB/hfi1: Insure freeze_work work

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Message-Id: <20190614203037.27910-5-sashal@kernel.org>
Date:   Fri, 14 Jun 2019 16:30:21 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Mike Marciniszyn <mike.marciniszyn@...el.com>,
        "Michael J . Ruhl" <michael.j.ruhl@...el.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Sasha Levin <sashal@...nel.org>, linux-rdma@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 05/18] IB/hfi1: Insure freeze_work work_struct is canceled on shutdown

From: Mike Marciniszyn <mike.marciniszyn@...el.com>

[ Upstream commit 6d517353c70bb0818b691ca003afdcb5ee5ea44e ]

By code inspection, the freeze_work is never canceled.

Fix by adding a cancel_work_sync in the shutdown path to insure it is no
longer running.

Fixes: 7724105686e7 ("IB/hfi1: add driver files")
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@...el.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@...el.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@...el.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@...el.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/hw/hfi1/chip.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c
index d30b3b908621..85db856047a9 100644
--- a/drivers/infiniband/hw/hfi1/chip.c
+++ b/drivers/infiniband/hw/hfi1/chip.c
@@ -9620,6 +9620,7 @@ void hfi1_quiet_serdes(struct hfi1_pportdata *ppd)
 
 	/* disable the port */
 	clear_rcvctrl(dd, RCV_CTRL_RCV_PORT_ENABLE_SMASK);
+	cancel_work_sync(&ppd->freeze_work);
 }
 
 static inline int init_cpu_counters(struct hfi1_devdata *dd)
-- 
2.20.1