[PATCH net-next v2 1/3] net: ag71xx: devm_clk_get_enabled

From: Rosen Penev
Date: Tue Aug 13 2024 - 13:05:43 EST


Allows removal of clk_prepare_enable to simplify the code slightly.

Tested on a TP-LINK Archer C7v2.

Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx>
---
drivers/net/ethernet/atheros/ag71xx.c | 37 +++++----------------------
1 file changed, 7 insertions(+), 30 deletions(-)

diff --git a/drivers/net/ethernet/atheros/ag71xx.c b/drivers/net/ethernet/atheros/ag71xx.c
index 6fc4996c8131..e46d10a5c28c 100644
--- a/drivers/net/ethernet/atheros/ag71xx.c
+++ b/drivers/net/ethernet/atheros/ag71xx.c
@@ -691,29 +691,20 @@ static int ag71xx_mdio_probe(struct ag71xx *ag)
np = dev->of_node;
ag->mii_bus = NULL;

- ag->clk_mdio = devm_clk_get(dev, "mdio");
+ ag->clk_mdio = devm_clk_get_enabled(dev, "mdio");
if (IS_ERR(ag->clk_mdio)) {
netif_err(ag, probe, ndev, "Failed to get mdio clk.\n");
return PTR_ERR(ag->clk_mdio);
}

- err = clk_prepare_enable(ag->clk_mdio);
- if (err) {
- netif_err(ag, probe, ndev, "Failed to enable mdio clk.\n");
- return err;
- }
-
mii_bus = devm_mdiobus_alloc(dev);
- if (!mii_bus) {
- err = -ENOMEM;
- goto mdio_err_put_clk;
- }
+ if (!mii_bus)
+ return -ENOMEM;

ag->mdio_reset = of_reset_control_get_exclusive(np, "mdio");
if (IS_ERR(ag->mdio_reset)) {
netif_err(ag, probe, ndev, "Failed to get reset mdio.\n");
- err = PTR_ERR(ag->mdio_reset);
- goto mdio_err_put_clk;
+ return PTR_ERR(ag->mdio_reset);
}

mii_bus->name = "ag71xx_mdio";
@@ -735,22 +726,17 @@ static int ag71xx_mdio_probe(struct ag71xx *ag)
err = of_mdiobus_register(mii_bus, mnp);
of_node_put(mnp);
if (err)
- goto mdio_err_put_clk;
+ return err;

ag->mii_bus = mii_bus;

return 0;
-
-mdio_err_put_clk:
- clk_disable_unprepare(ag->clk_mdio);
- return err;
}

static void ag71xx_mdio_remove(struct ag71xx *ag)
{
if (ag->mii_bus)
mdiobus_unregister(ag->mii_bus);
- clk_disable_unprepare(ag->clk_mdio);
}

static void ag71xx_hw_stop(struct ag71xx *ag)
@@ -1845,7 +1831,7 @@ static int ag71xx_probe(struct platform_device *pdev)
return -EINVAL;
}

- ag->clk_eth = devm_clk_get(&pdev->dev, "eth");
+ ag->clk_eth = devm_clk_get_enabled(&pdev->dev, "eth");
if (IS_ERR(ag->clk_eth)) {
netif_err(ag, probe, ndev, "Failed to get eth clk.\n");
return PTR_ERR(ag->clk_eth);
@@ -1925,19 +1911,13 @@ static int ag71xx_probe(struct platform_device *pdev)
netif_napi_add_weight(ndev, &ag->napi, ag71xx_poll,
AG71XX_NAPI_WEIGHT);

- err = clk_prepare_enable(ag->clk_eth);
- if (err) {
- netif_err(ag, probe, ndev, "Failed to enable eth clk.\n");
- return err;
- }
-
ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, 0);

ag71xx_hw_init(ag);

err = ag71xx_mdio_probe(ag);
if (err)
- goto err_put_clk;
+ return err;

platform_set_drvdata(pdev, ndev);

@@ -1962,8 +1942,6 @@ static int ag71xx_probe(struct platform_device *pdev)

err_mdio_remove:
ag71xx_mdio_remove(ag);
-err_put_clk:
- clk_disable_unprepare(ag->clk_eth);
return err;
}

@@ -1978,7 +1956,6 @@ static void ag71xx_remove(struct platform_device *pdev)
ag = netdev_priv(ndev);
unregister_netdev(ndev);
ag71xx_mdio_remove(ag);
- clk_disable_unprepare(ag->clk_eth);
platform_set_drvdata(pdev, NULL);
}

--
2.46.0