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PCI: mediatek: Release the resource when PCIe enable port fail

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On the mt7623 platform, if one port enable fail and other port
enable succeed. It will hang on when using pci enum
because the resource was not released correctly.

Signed-off-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
This commit is contained in:
Chuanjia Liu
2020-08-31 15:53:12 +08:00
committed by Tom Rini
parent 3dd52dd69e
commit 9250d0bad5
1 changed files with 13 additions and 6 deletions
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19
drivers/pci/pcie_mediatek.c
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@@ -443,29 +443,36 @@ static void mtk_pcie_enable_port(struct mtk_pcie_port *port)
err = clk_enable(&port->sys_ck);
if (err)
goto exit;
goto err_sys_clk;
err = reset_assert(&port->reset);
if (err)
goto exit;
goto err_reset;
err = reset_deassert(&port->reset);
if (err)
goto exit;
goto err_reset;
err = generic_phy_init(&port->phy);
if (err)
goto exit;
goto err_phy_init;
err = generic_phy_power_on(&port->phy);
if (err)
goto exit;
goto err_phy_on;
if (!mtk_pcie_startup_port(port))
return;
pr_err("Port%d link down\n", port->slot);
exit:
generic_phy_power_off(&port->phy);
err_phy_on:
generic_phy_exit(&port->phy);
err_phy_init:
err_reset:
clk_disable(&port->sys_ck);
err_sys_clk:
mtk_pcie_port_free(port);
}