[PATCH net 1/3] net: stmmac: dwmac-oxnas: fix of-node leak

From: Johan Hovold
Date: Mon Jan 02 2017 - 06:56:51 EST


Use the syscon lookup-by-phandle helper so that the reference taken by
of_parse_phandle() is released when done with the node.

Fixes: 5ed7414062e7 ("net: stmmac: Add OXNAS Glue Driver")
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
index c35597586121..fcc237e0aae1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
@@ -109,16 +109,9 @@ static int oxnas_dwmac_probe(struct platform_device *pdev)
{
struct plat_stmmacenet_data *plat_dat;
struct stmmac_resources stmmac_res;
- struct device_node *sysctrl;
struct oxnas_dwmac *dwmac;
int ret;

- sysctrl = of_parse_phandle(pdev->dev.of_node, "oxsemi,sys-ctrl", 0);
- if (!sysctrl) {
- dev_err(&pdev->dev, "failed to get sys-ctrl node\n");
- return -EINVAL;
- }
-
ret = stmmac_get_platform_resources(pdev, &stmmac_res);
if (ret)
return ret;
@@ -134,7 +127,8 @@ static int oxnas_dwmac_probe(struct platform_device *pdev)
dwmac->dev = &pdev->dev;
plat_dat->bsp_priv = dwmac;

- dwmac->regmap = syscon_node_to_regmap(sysctrl);
+ dwmac->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
+ "oxsemi,sys-ctrl");
if (IS_ERR(dwmac->regmap)) {
dev_err(&pdev->dev, "failed to have sysctrl regmap\n");
return PTR_ERR(dwmac->regmap);
--
2.10.2