of_device_get_match_data() can return NULL if of_match_device failed, and
the pointer 'data' was dereferenced without checking against NULL. Add
checking of pointer 'data' in qcom_ethqos_probe().
Cc: stable@xxxxxxxxxxxxxxx
Fixes: a7c30e62d4b8 ("net: stmmac: Add driver for Qualcomm ethqos")
Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 901a3c1959fa..f18393fe58a4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -838,6 +838,9 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
ethqos->mac_base = stmmac_res.addr;
data = of_device_get_match_data(dev);
+ if (!data)
+ return -ENODEV;
+
ethqos->por = data->por;
ethqos->num_por = data->num_por;
ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;
--
2.25.1
