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Message-Id: <20170703133344.634250691@linuxfoundation.org>
Date:   Mon,  3 Jul 2017 15:35:01 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Tom Lendacky <thomas.lendacky@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.4 061/101] amd-xgbe: Check xgbe_init() return code

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

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

From: "Lendacky, Thomas" <Thomas.Lendacky@....com>


[ Upstream commit 738f7f647371ff4cfc9646c99dba5b58ad142db3 ]

The xgbe_init() routine returns a return code indicating success or
failure, but the return code is not checked. Add code to xgbe_init()
to issue a message when failures are seen and add code to check the
xgbe_init() return code.

Signed-off-by: Tom Lendacky <thomas.lendacky@....com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/amd/xgbe/xgbe-dev.c |    4 +++-
 drivers/net/ethernet/amd/xgbe/xgbe-drv.c |    4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
@@ -2732,8 +2732,10 @@ static int xgbe_init(struct xgbe_prv_dat
 
 	/* Flush Tx queues */
 	ret = xgbe_flush_tx_queues(pdata);
-	if (ret)
+	if (ret) {
+		netdev_err(pdata->netdev, "error flushing TX queues\n");
 		return ret;
+	}
 
 	/*
 	 * Initialize DMA related features
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -877,7 +877,9 @@ static int xgbe_start(struct xgbe_prv_da
 
 	DBGPR("-->xgbe_start\n");
 
-	hw_if->init(pdata);
+	ret = hw_if->init(pdata);
+	if (ret)
+		return ret;
 
 	ret = phy_if->phy_start(pdata);
 	if (ret)


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