[PATCH v3 5/7] PCI: mvebu: Cleanup error handling in mvebu_pcie_probe()

Pali Rohár
2022-09-05T19:47:01Z

Move cleanup calls to error labels. This simplify error handling when
registering of some port fails.

Signed-off-by: Pali Rohár <pali@kernel.org>
---
Changes in v3:
* New patch
---
drivers/pci/controller/pci-mvebu.c | 59 ++++++++++++++----------------
1 file changed, 28 insertions(+), 31 deletions(-)

diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index d9e46bd7a4ec..9986dd486680 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -1856,18 +1856,14 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
if (IS_ERR(port->base)) {
dev_err(dev, "%s: cannot map registers\n", port->name);
port->base = NULL;
- mvebu_pcie_powerdown(port);
- continue;
+ goto err_port_down;
}

ret = mvebu_pci_bridge_emul_init(port);
if (ret < 0) {
dev_err(dev, "%s: cannot init emulated bridge\n",
port->name);
- devm_iounmap(dev, port->base);
- port->base = NULL;
- mvebu_pcie_powerdown(port);
- continue;
+ goto err_base_unmap;
}

if (port->error_irq > 0 || port->intx_irq > 0) {
@@ -1875,11 +1871,7 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
if (ret) {
dev_err(dev, "%s: cannot init irq domain\n",
port->name);
- pci_bridge_emul_cleanup(&port->bridge);
- devm_iounmap(dev, port->base);
- port->base = NULL;
- mvebu_pcie_powerdown(port);
- continue;
+ goto err_bridge_cleanup;
}
}

@@ -1891,15 +1883,7 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
if (ret) {
dev_err(dev, "%s: cannot register error interrupt handler: %d\n",
port->name, ret);
- if (port->intx_irq_domain)
- irq_domain_remove(port->intx_irq_domain);
- if (port->rp_irq_domain)
- irq_domain_remove(port->rp_irq_domain);
- pci_bridge_emul_cleanup(&port->bridge);
- devm_iounmap(dev, port->base);
- port->base = NULL;
- mvebu_pcie_powerdown(port);
- continue;
+ goto err_domain_remove;
}
}

@@ -1911,17 +1895,7 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
if (ret) {
dev_err(dev, "%s: cannot register intx interrupt handler: %d\n",
port->name, ret);
- if (port->error_irq > 0)
- devm_free_irq(dev, port->error_irq, port);
- if (port->intx_irq_domain)
- irq_domain_remove(port->intx_irq_domain);
- if (port->rp_irq_domain)
- irq_domain_remove(port->rp_irq_domain);
- pci_bridge_emul_cleanup(&port->bridge);
- devm_iounmap(dev, port->base);
- port->base = NULL;
- mvebu_pcie_powerdown(port);
- continue;
+ goto err_free_error_irq;
}
}

@@ -2015,6 +1989,29 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
mvebu_pcie_setup_hw(port);
mvebu_pcie_set_local_dev_nr(port, 1);
mvebu_pcie_set_local_bus_nr(port, 0);
+
+ continue;
+
+err_free_error_irq:
+ if (port->error_irq > 0)
+ devm_free_irq(dev, port->error_irq, port);
+
+err_domain_remove:
+ if (port->intx_irq_domain)
+ irq_domain_remove(port->intx_irq_domain);
+
+ if (port->rp_irq_domain)
+ irq_domain_remove(port->rp_irq_domain);
+
+err_bridge_cleanup:
+ pci_bridge_emul_cleanup(&port->bridge);
+
+err_base_unmap:
+ devm_iounmap(dev, port->base);
+ port->base = NULL;
+
+err_port_down:
+ mvebu_pcie_powerdown(port);
}

bridge->sysdata = pcie;
--
2.20.1