linux-kernel - [PATCH net-next] net: aquantia: fix error handling in aq_ptp

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Date:   Mon, 28 Oct 2019 02:04:47 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Egor Pomozov <epomozov@...vell.com>,
        Igor Russkikh <igor.russkikh@...antia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sergey Samoilenko <sergey.samoilenko@...antia.com>,
        Dmitry Bezrukov <dmitry.bezrukov@...antia.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH net-next] net: aquantia: fix error handling in aq_ptp_poll

Fix currenty ignored returned error by properly checking *err* after
calling aq_nic->aq_hw_ops->hw_ring_hwts_rx_fill().

Addresses-Coverity-ID: 1487357 ("Unused value")
Fixes: 04a1839950d9 ("net: aquantia: implement data PTP datapath")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_ptp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c b/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
index 3ec08415e53e..92b666f7d242 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
@@ -678,6 +678,8 @@ static int aq_ptp_poll(struct napi_struct *napi, int budget)
 
 		err = aq_nic->aq_hw_ops->hw_ring_hwts_rx_fill(aq_nic->aq_hw,
 							      &aq_ptp->hwts_rx);
+		if (err < 0)
+			goto err_exit;
 
 		was_cleaned = true;
 	}
-- 
2.23.0