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authorQuan Nguyen <qnguyen@apm.com>2017-08-29 15:43:12 -0700
committerDavid S. Miller <davem@davemloft.net>2017-08-29 16:13:08 -0700
commit183db481279437590f75a8a0479d512e5dd597de (patch)
tree8deb8f4c1b199361c6d0fa519771cbc1767ec816 /drivers/net/ethernet/apm
parente7562597b46d099a78d45c781ee8d1a7a93c53f1 (diff)
downloadlinux-183db481279437590f75a8a0479d512e5dd597de.tar.bz2
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>
Diffstat (limited to 'drivers/net/ethernet/apm')
-rw-r--r--drivers/net/ethernet/apm/xgene/xgene_enet_main.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
index 1d307f2def2d..6e253d913fe2 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
@@ -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;