[PATCH v3 04/10] net: davinci: support of_get_mac_address new ERR_PTR error

From: Petr Åtetiar
Date: Fri May 03 2019 - 03:58:11 EST


There was NVMEM support added directly to of_get_mac_address, and it
uses nvmem_get_mac_address under the hood, so we can remove it. As
of_get_mac_address can now return NULL and ERR_PTR encoded error values,
adjust to that as well.

Signed-off-by: Petr Åtetiar <ynezz@xxxxxxx>
---

Changes since v2:

* ERR_PTR handling

drivers/net/ethernet/ti/davinci_emac.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 57450b1..4229ef0 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1714,7 +1714,7 @@ static struct net_device_stats *emac_dev_getnetstats(struct net_device *ndev)

if (!is_valid_ether_addr(pdata->mac_addr)) {
mac_addr = of_get_mac_address(np);
- if (mac_addr)
+ if (!IS_ERR_OR_NULL(mac_addr))
ether_addr_copy(pdata->mac_addr, mac_addr);
}

@@ -1912,15 +1912,11 @@ static int davinci_emac_probe(struct platform_device *pdev)
ether_addr_copy(ndev->dev_addr, priv->mac_addr);

if (!is_valid_ether_addr(priv->mac_addr)) {
- /* Try nvmem if MAC wasn't passed over pdata or DT. */
- rc = nvmem_get_mac_address(&pdev->dev, priv->mac_addr);
- if (rc) {
- /* Use random MAC if still none obtained. */
- eth_hw_addr_random(ndev);
- memcpy(priv->mac_addr, ndev->dev_addr, ndev->addr_len);
- dev_warn(&pdev->dev, "using random MAC addr: %pM\n",
- priv->mac_addr);
- }
+ /* Use random MAC if still none obtained. */
+ eth_hw_addr_random(ndev);
+ memcpy(priv->mac_addr, ndev->dev_addr, ndev->addr_len);
+ dev_warn(&pdev->dev, "using random MAC addr: %pM\n",
+ priv->mac_addr);
}

ndev->netdev_ops = &emac_netdev_ops;
--
1.9.1