[PATCH for v4.9 LTS 40/86] amd-xgbe: Check xgbe_init() return code

[Levin, Alexander (Sasha Levin)]

From: "Lendacky, Thomas" <thomas.lenda...@amd.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.lenda...@amd.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
---
 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(-)

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c 
b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
index ca106d4275cc..3424435a39dd 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
@@ -2825,8 +2825,10 @@ static int xgbe_init(struct xgbe_prv_data *pdata)
 
        /* 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
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c 
b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index 0f0f30149e5a..1e4e8b245cd5 100644
--- 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_data *pdata)
 
        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)
-- 
2.11.0