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Subject[PATCH] net: renesas: fix a potential NULL pointer dereference
Date
In case of_get_phy_mode fails, the fix returns NULL to avoid
the NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
---
drivers/net/ethernet/renesas/sh_eth.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 339b2eae2100..b119587ec673 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -3187,6 +3187,8 @@ static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
return NULL;

pdata->phy_interface = of_get_phy_mode(np);
+ if (unlikely(!pdata->phy_interface))
+ return NULL;

mac_addr = of_get_mac_address(np);
if (mac_addr)
--
2.17.1
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