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151 lines
3.9 KiB
Diff
151 lines
3.9 KiB
Diff
From 179a445ae4ef36ec44f4aea18e5f42d21334d186 Mon Sep 17 00:00:00 2001
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From: Jonas Gorski <jonas.gorski@gmail.com>
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Date: Sat, 25 Feb 2017 12:39:25 +0100
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Subject: [PATCH 4/6] bcm63xx_enet: use managed functions for clock/ioremap
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Use managed functions where possible to reduce the amount of resource
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handling on error and remove paths.
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Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
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---
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drivers/net/ethernet/broadcom/bcm63xx_enet.c | 54 +++++++---------------------
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1 file changed, 12 insertions(+), 42 deletions(-)
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--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
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+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
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@@ -1767,14 +1767,14 @@ static int bcm_enet_probe(struct platfor
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clk_name = "enet1";
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}
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- priv->mac_clk = clk_get(&pdev->dev, clk_name);
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+ priv->mac_clk = devm_clk_get(&pdev->dev, clk_name);
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if (IS_ERR(priv->mac_clk)) {
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ret = PTR_ERR(priv->mac_clk);
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goto out;
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}
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ret = clk_prepare_enable(priv->mac_clk);
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if (ret)
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- goto out_put_clk_mac;
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+ goto out;
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/* initialize default and fetch platform data */
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priv->rx_ring_size = BCMENET_DEF_RX_DESC;
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@@ -1802,7 +1802,7 @@ static int bcm_enet_probe(struct platfor
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if (priv->mac_id == 0 && priv->has_phy && !priv->use_external_mii) {
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/* using internal PHY, enable clock */
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- priv->phy_clk = clk_get(&pdev->dev, "ephy");
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+ priv->phy_clk = devm_clk_get(&pdev->dev, "ephy");
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if (IS_ERR(priv->phy_clk)) {
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ret = PTR_ERR(priv->phy_clk);
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priv->phy_clk = NULL;
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@@ -1810,7 +1810,7 @@ static int bcm_enet_probe(struct platfor
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}
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ret = clk_prepare_enable(priv->phy_clk);
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if (ret)
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- goto out_put_clk_phy;
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+ goto out_disable_clk_mac;
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}
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/* do minimal hardware init to be able to probe mii bus */
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@@ -1907,14 +1907,8 @@ out_uninit_hw:
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if (priv->phy_clk)
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clk_disable_unprepare(priv->phy_clk);
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-out_put_clk_phy:
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- if (priv->phy_clk)
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- clk_put(priv->phy_clk);
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-
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out_disable_clk_mac:
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clk_disable_unprepare(priv->mac_clk);
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-out_put_clk_mac:
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- clk_put(priv->mac_clk);
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out:
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free_netdev(dev);
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return ret;
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@@ -1950,12 +1944,10 @@ static int bcm_enet_remove(struct platfo
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}
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/* disable hw block clocks */
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- if (priv->phy_clk) {
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+ if (priv->phy_clk)
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clk_disable_unprepare(priv->phy_clk);
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- clk_put(priv->phy_clk);
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- }
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+
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clk_disable_unprepare(priv->mac_clk);
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- clk_put(priv->mac_clk);
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free_netdev(dev);
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return 0;
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@@ -2738,26 +2730,20 @@ static int bcm_enetsw_probe(struct platf
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if (ret)
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goto out;
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- if (!request_mem_region(res_mem->start, resource_size(res_mem),
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- "bcm63xx_enetsw")) {
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- ret = -EBUSY;
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+ priv->base = devm_ioremap_resource(&pdev->dev, res_mem);
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+ if (IS_ERR(priv->base)) {
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+ ret = PTR_ERR(priv->base);
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goto out;
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}
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- priv->base = ioremap(res_mem->start, resource_size(res_mem));
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- if (priv->base == NULL) {
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- ret = -ENOMEM;
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- goto out_release_mem;
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- }
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-
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- priv->mac_clk = clk_get(&pdev->dev, "enetsw");
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+ priv->mac_clk = devm_clk_get(&pdev->dev, "enetsw");
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if (IS_ERR(priv->mac_clk)) {
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ret = PTR_ERR(priv->mac_clk);
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- goto out_unmap;
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+ goto out;
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}
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ret = clk_prepare_enable(priv->mac_clk);
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if (ret)
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- goto out_put_clk;
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+ goto out;
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priv->rx_chan = 0;
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priv->tx_chan = 1;
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@@ -2789,15 +2775,6 @@ static int bcm_enetsw_probe(struct platf
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out_disable_clk:
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clk_disable_unprepare(priv->mac_clk);
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-
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-out_put_clk:
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- clk_put(priv->mac_clk);
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-
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-out_unmap:
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- iounmap(priv->base);
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-
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-out_release_mem:
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- release_mem_region(res_mem->start, resource_size(res_mem));
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out:
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free_netdev(dev);
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return ret;
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@@ -2809,20 +2786,13 @@ static int bcm_enetsw_remove(struct plat
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{
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struct bcm_enet_priv *priv;
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struct net_device *dev;
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- struct resource *res;
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/* stop netdevice */
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dev = platform_get_drvdata(pdev);
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priv = netdev_priv(dev);
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unregister_netdev(dev);
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- /* release device resources */
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- iounmap(priv->base);
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- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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- release_mem_region(res->start, resource_size(res));
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-
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clk_disable_unprepare(priv->mac_clk);
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- clk_put(priv->mac_clk);
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free_netdev(dev);
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return 0;
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