shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-04 10:12:16 +09:00
Code Issues Packages Projects Releases Wiki Activity

bcm63xx_enet: correct clock usage

Browse Source 
commit 9c86b846ce upstream.

Check the return code of prepare_enable and change one last instance of
enable only to prepare_enable. Also properly disable and release the
clock in error paths and on remove for enetsw.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jonas Gorski
2017-10-01 13:02:15 +02:00
committed by Greg Kroah-Hartman
parent 1ccab2bf72
commit b913a05ab7
1 changed files with 24 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/net/ethernet/broadcom/bcm63xx_enet.c
View File

@@ -1773,7 +1773,9 @@ static int bcm_enet_probe(struct platform_device *pdev)
ret = PTR_ERR(priv->mac_clk);
goto out;
}
clk_prepare_enable(priv->mac_clk);
ret = clk_prepare_enable(priv->mac_clk);
if (ret)
goto out_put_clk_mac;
/* initialize default and fetch platform data */
priv->rx_ring_size = BCMENET_DEF_RX_DESC;
@@ -1805,9 +1807,11 @@ static int bcm_enet_probe(struct platform_device *pdev)
if (IS_ERR(priv->phy_clk)) {
ret = PTR_ERR(priv->phy_clk);
priv->phy_clk = NULL;
goto out_put_clk_mac;
goto out_disable_clk_mac;
}
clk_prepare_enable(priv->phy_clk);
ret = clk_prepare_enable(priv->phy_clk);
if (ret)
goto out_put_clk_phy;
}
/* do minimal hardware init to be able to probe mii bus */
@@ -1901,13 +1905,16 @@ out_free_mdio:
out_uninit_hw:
/* turn off mdc clock */
enet_writel(priv, 0, ENET_MIISC_REG);
if (priv->phy_clk) {
if (priv->phy_clk)
clk_disable_unprepare(priv->phy_clk);
clk_put(priv->phy_clk);
}
out_put_clk_mac:
out_put_clk_phy:
if (priv->phy_clk)
clk_put(priv->phy_clk);
out_disable_clk_mac:
clk_disable_unprepare(priv->mac_clk);
out_put_clk_mac:
clk_put(priv->mac_clk);
out:
free_netdev(dev);
@@ -2752,7 +2759,9 @@ static int bcm_enetsw_probe(struct platform_device *pdev)
ret = PTR_ERR(priv->mac_clk);
goto out_unmap;
}
clk_enable(priv->mac_clk);
ret = clk_prepare_enable(priv->mac_clk);
if (ret)
goto out_put_clk;
priv->rx_chan = 0;
priv->tx_chan = 1;
@@ -2773,7 +2782,7 @@ static int bcm_enetsw_probe(struct platform_device *pdev)
ret = register_netdev(dev);
if (ret)
goto out_put_clk;
goto out_disable_clk;
netif_carrier_off(dev);
platform_set_drvdata(pdev, dev);
@@ -2782,6 +2791,9 @@ static int bcm_enetsw_probe(struct platform_device *pdev)
return 0;
out_disable_clk:
clk_disable_unprepare(priv->mac_clk);
out_put_clk:
clk_put(priv->mac_clk);
@@ -2813,6 +2825,9 @@ static int bcm_enetsw_remove(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
clk_disable_unprepare(priv->mac_clk);
clk_put(priv->mac_clk);
free_netdev(dev);
return 0;
}