[PATCH v2 2/5] PCI: aardvark: Check for errors from pci_bridge_emul_init() call

[Pali Rohár]

Function pci_bridge_emul_init() may fail so correctly check for errors.

Fixes: 8a3ebd8de328 ("PCI: aardvark: Implement emulated root PCI bridge config 
space")
Signed-off-by: Pali Rohár <p...@kernel.org>
Reviewed-by: Marek Behún <marek.be...@nic.cz>
---
 drivers/pci/controller/pci-aardvark.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pci-aardvark.c 
b/drivers/pci/controller/pci-aardvark.c
index 8caa80b19cf8..d5f58684d962 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -608,7 +608,7 @@ static struct pci_bridge_emul_ops advk_pci_bridge_emul_ops 
= {
  * Initialize the configuration space of the PCI-to-PCI bridge
  * associated with the given PCIe interface.
  */
-static void advk_sw_pci_bridge_init(struct advk_pcie *pcie)
+static int advk_sw_pci_bridge_init(struct advk_pcie *pcie)
 {
        struct pci_bridge_emul *bridge = &pcie->bridge;
 
@@ -634,8 +634,7 @@ static void advk_sw_pci_bridge_init(struct advk_pcie *pcie)
        bridge->data = pcie;
        bridge->ops = &advk_pci_bridge_emul_ops;
 
-       pci_bridge_emul_init(bridge, 0);
-
+       return pci_bridge_emul_init(bridge, 0);
 }
 
 static bool advk_pcie_valid_device(struct advk_pcie *pcie, struct pci_bus *bus,
@@ -1169,7 +1168,11 @@ static int advk_pcie_probe(struct platform_device *pdev)
 
        advk_pcie_setup_hw(pcie);
 
-       advk_sw_pci_bridge_init(pcie);
+       ret = advk_sw_pci_bridge_init(pcie);
+       if (ret) {
+               dev_err(dev, "Failed to register emulated root PCI bridge\n");
+               return ret;
+       }
 
        ret = advk_pcie_init_irq_domain(pcie);
        if (ret) {
-- 
2.20.1