From: Ioana Ciornei <ioana.ciornei@nxp.com>
To: davem@davemloft.net, netdev@vger.kernel.org
Cc: Ioana Ciornei <ioana.ciornei@nxp.com>
Subject: [PATCH net] dpaa2-eth: check fsl_mc_get_endpoint for IS_ERR_OR_NULL()
Date: Tue, 14 Jul 2020 15:08:16 +0300 [thread overview]
Message-ID: <20200714120816.6929-1-ioana.ciornei@nxp.com> (raw)
The fsl_mc_get_endpoint() function can return an error or directly a
NULL pointer in case the peer device is not under the root DPRC
container. Treat this case also, otherwise it would lead to a NULL
pointer when trying to access the peer fsl_mc_device.
Fixes: 719479230893 ("dpaa2-eth: add MAC/PHY support through phylink")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index f150cd454fa4..0998ceb1a26e 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -3632,7 +3632,7 @@ static int dpaa2_eth_connect_mac(struct dpaa2_eth_priv *priv)
dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent);
dpmac_dev = fsl_mc_get_endpoint(dpni_dev);
- if (IS_ERR(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type)
+ if (IS_ERR_OR_NULL(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type)
return 0;
if (dpaa2_mac_is_type_fixed(dpmac_dev, priv->mc_io))
--
2.25.1
next reply other threads:[~2020-07-14 12:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 12:08 Ioana Ciornei [this message]
2020-07-16 0:38 ` [PATCH net] dpaa2-eth: check fsl_mc_get_endpoint for IS_ERR_OR_NULL() Jakub Kicinski
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