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Code Issues Releases Wiki Activity

PCI: keystone: Remove unnecessary goto statement

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Fix the misuse of goto statement in ks_pcie_get_irq_controller_info() as
simple return is more appropriate for this function.  While at it add an
error log for absence of interrupt controller node.

[bhelgaas: drop "ret" altogether since we always know the return value]
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Rob Herring <robh+dt@kernel.org>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Kumar Gala <galak@codeaurora.org>
This commit is contained in:
Murali Karicheri 2016-04-11 10:50:31 -04:00 committed by Bjorn Helgaas
parent 025dd3daed
commit 1e9f8dcf89
1 changed files with 14 additions and 9 deletions
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23
drivers/pci/host/pci-keystone.c
View file

@ -160,7 +160,7 @@ static void ks_pcie_legacy_irq_handler(struct irq_desc *desc)
static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie,
char *controller, int *num_irqs)
{
int temp, max_host_irqs, legacy = 1, *host_irqs, ret = -EINVAL;
int temp, max_host_irqs, legacy = 1, *host_irqs;
struct device *dev = ks_pcie->pp.dev;
struct device_node *np_pcie = dev->of_node, **np_temp;
@ -181,11 +181,15 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie,
*np_temp = of_find_node_by_name(np_pcie, controller);
if (!(*np_temp)) {
dev_err(dev, "Node for %s is absent\n", controller);
goto out;
return -EINVAL;
}
temp = of_irq_count(*np_temp);
if (!temp)
goto out;
if (!temp) {
dev_err(dev, "No IRQ entries in %s\n", controller);
return -EINVAL;
}
if (temp > max_host_irqs)
dev_warn(dev, "Too many %s interrupts defined %u\n",
(legacy ? "legacy" : "MSI"), temp);
@ -199,12 +203,13 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie,
if (!host_irqs[temp])
break;
}
if (temp) {
*num_irqs = temp;
ret = 0;
return 0;
}
out:
return ret;
return -EINVAL;
}
static void ks_pcie_setup_interrupts(struct keystone_pcie *ks_pcie)
@ -345,7 +350,7 @@ static int __init ks_add_pcie_port(struct keystone_pcie *ks_pcie,
return ret;
}
return ret;
return 0;
}
static const struct of_device_id ks_pcie_of_match[] = {
@ -374,7 +379,7 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
struct resource *res;
void __iomem *reg_p;
struct phy *phy;
int ret = 0;
int ret;
ks_pcie = devm_kzalloc(&pdev->dev, sizeof(*ks_pcie),
GFP_KERNEL);