[PATCH] PCI: exynos: Handle PHY initialization errors

[Sreeraj S Kurup]

Check the return values of phy_init() and phy_power_on() to
avoid continuing PCIe host initialization when PHY setup fails.

If phy_power_on() fails, call phy_exit() to release the PHY
resources initialized by phy_init() before returning the error.

Signed-off-by: Sreeraj S Kurup <sreekuttan2156239 at gmail.com>
---
 drivers/pci/controller/dwc/pci-exynos.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index e3c05ade381b..5ad07c0be8e5 100644
--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -225,13 +225,21 @@ static int exynos_pcie_host_init(struct dw_pcie_rp *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
 	struct exynos_pcie *ep = to_exynos_pcie(pci);
+	int ret;
 
 	pp->bridge->ops = &exynos_pci_ops;
 
 	exynos_pcie_assert_core_reset(ep);
 
-	phy_init(ep->phy);
-	phy_power_on(ep->phy);
+	ret = phy_init(ep->phy);
+	if (ret)
+		return ret;
+
+	ret = phy_power_on(ep->phy);
+	if (ret) {
+		phy_exit(ep->phy);
+		return ret;
+	}
 
 	exynos_pcie_deassert_core_reset(ep);
 	exynos_pcie_enable_irq_pulse(ep);
-- 
2.55.0