[PATCH net v2 2/4] net: mvpp2: move the mac retrieval/copy logic into its own function

Antoine Tenart
2017-08-25T14:14:18Z

The MAC retrieval has a quite complicated logic (which is broken). Moves
it to its own function to prepare for patches fixing its logic, so that
reviews are easier.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
---
drivers/net/ethernet/marvell/mvpp2.c | 45 +++++++++++++++++++++---------------
1 file changed, 27 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index 4d598ca8503a..a1593134ed96 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -6492,6 +6492,31 @@ static int mvpp2_port_init(struct mvpp2_port *port)
return err;
}

+static void mvpp2_port_copy_mac_addr(struct net_device *dev, struct mvpp2 *priv,
+ struct device_node *port_node,
+ char **mac_from)
+{
+ struct mvpp2_port *port = netdev_priv(dev);
+ char hw_mac_addr[ETH_ALEN] = {0};
+ const char *dt_mac_addr;
+
+ dt_mac_addr = of_get_mac_address(port_node);
+ if (dt_mac_addr && is_valid_ether_addr(dt_mac_addr)) {
+ *mac_from = "device tree";
+ ether_addr_copy(dev->dev_addr, dt_mac_addr);
+ } else {
+ if (priv->hw_version == MVPP21)
+ mvpp21_get_mac_address(port, hw_mac_addr);
+ if (is_valid_ether_addr(hw_mac_addr)) {
+ *mac_from = "hardware";
+ ether_addr_copy(dev->dev_addr, hw_mac_addr);
+ } else {
+ *mac_from = "random";
+ eth_hw_addr_random(dev);
+ }
+ }
+}
+
/* Ports initialization */
static int mvpp2_port_probe(struct platform_device *pdev,
struct device_node *port_node,
@@ -6502,9 +6527,7 @@ static int mvpp2_port_probe(struct platform_device *pdev,
struct mvpp2_port_pcpu *port_pcpu;
struct net_device *dev;
struct resource *res;
- const char *dt_mac_addr;
- const char *mac_from;
- char hw_mac_addr[ETH_ALEN] = {0};
+ char *mac_from = "";
u32 id;
int features;
int phy_mode;
@@ -6585,21 +6608,7 @@ static int mvpp2_port_probe(struct platform_device *pdev,
goto err_free_irq;
}

- dt_mac_addr = of_get_mac_address(port_node);
- if (dt_mac_addr && is_valid_ether_addr(dt_mac_addr)) {
- mac_from = "device tree";
- ether_addr_copy(dev->dev_addr, dt_mac_addr);
- } else {
- if (priv->hw_version == MVPP21)
- mvpp21_get_mac_address(port, hw_mac_addr);
- if (is_valid_ether_addr(hw_mac_addr)) {
- mac_from = "hardware";
- ether_addr_copy(dev->dev_addr, hw_mac_addr);
- } else {
- mac_from = "random";
- eth_hw_addr_random(dev);
- }
- }
+ mvpp2_port_copy_mac_addr(dev, priv, port_node, &mac_from);

port->tx_ring_size = MVPP2_MAX_TXD;
port->rx_ring_size = MVPP2_MAX_RXD;
--
2.13.5