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drivers: net: xgene: Correct probe sequence handling 

The phy is connected at early stage of probe but not properly
disconnected if error occurs.  This patch fixes the issue.

Also changing the return type of xgene_enet_check_phy_handle(),
since this function always returns success.

Signed-off-by: Quan Nguyen <qnguyen@apm.com>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Quan Nguyen 2017-08-29 15:43:12 -07:00 committed by David S. Miller
parent e7562597b4
commit 183db48127
1 changed files with 13 additions and 14 deletions
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27
drivers/net/ethernet/apm/xgene/xgene_enet_main.c
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@ -1661,21 +1661,21 @@ static int xgene_enet_get_irqs(struct xgene_enet_pdata *pdata)
return 0;
}
static int xgene_enet_check_phy_handle(struct xgene_enet_pdata *pdata)
static void xgene_enet_check_phy_handle(struct xgene_enet_pdata *pdata)
{
int ret;
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII)
return 0;
return;
if (!IS_ENABLED(CONFIG_MDIO_XGENE))
return 0;
return;
ret = xgene_enet_phy_connect(pdata->ndev);
if (!ret)
pdata->mdio_driver = true;
return 0;
return;
}
static void xgene_enet_gpiod_get(struct xgene_enet_pdata *pdata)
@ -1779,10 +1779,6 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
if (ret)
return ret;
ret = xgene_enet_check_phy_handle(pdata);
if (ret)
return ret;
xgene_enet_gpiod_get(pdata);
pdata->clk = devm_clk_get(&pdev->dev, NULL);
@ -2097,9 +2093,11 @@ static int xgene_enet_probe(struct platform_device *pdev)
goto err;
}
xgene_enet_check_phy_handle(pdata);
ret = xgene_enet_init_hw(pdata);
if (ret)
goto err;
goto err2;
link_state = pdata->mac_ops->link_state;
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {
@ -2117,29 +2115,30 @@ static int xgene_enet_probe(struct platform_device *pdev)
spin_lock_init(&pdata->stats_lock);
ret = xgene_extd_stats_init(pdata);
if (ret)
goto err2;
goto err1;
xgene_enet_napi_add(pdata);
ret = register_netdev(ndev);
if (ret) {
netdev_err(ndev, "Failed to register netdev\n");
goto err2;
goto err1;
}
return 0;
err2:
err1:
/*
* If necessary, free_netdev() will call netif_napi_del() and undo
* the effects of xgene_enet_napi_add()'s calls to netif_napi_add().
*/
xgene_enet_delete_desc_rings(pdata);
err2:
if (pdata->mdio_driver)
xgene_enet_phy_disconnect(pdata);
else if (phy_interface_mode_is_rgmii(pdata->phy_mode))
xgene_enet_mdio_remove(pdata);
err1:
xgene_enet_delete_desc_rings(pdata);
err:
free_netdev(ndev);
return ret;