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PCI: keystone: Cleanup error_irq configuration 

pci-keystone driver uses irq_of_parse_and_map() to get irq number of
error_irq.

Use platform_get_irq() instead and move platform_get_irq() and
request_irq() of error_irq from ks_pcie_add_pcie_port to ks_pcie_probe
since error_irq is common to both RC mode and EP mode.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This commit is contained in:
Kishon Vijay Abraham I 2019-03-25 15:09:23 +05:30 committed by Lorenzo Pieralisi
parent 9afb20d600
commit 0790eb175e
1 changed files with 17 additions and 26 deletions
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43
drivers/pci/controller/dwc/pci-keystone.c
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@ -98,8 +98,6 @@ struct keystone_pcie {
struct irq_domain *legacy_irq_domain;
struct device_node *np;
int error_irq;
/* Application register space */
void __iomem *va_app_base; /* DT 1st resource */
struct resource app;
@ -743,12 +741,6 @@ err:
return ret;
}
static void ks_pcie_setup_interrupts(struct keystone_pcie *ks_pcie)
{
if (ks_pcie->error_irq > 0)
ks_pcie_enable_error_irq(ks_pcie);
}
/*
* When a PCI device does not exist during config cycles, keystone host gets a
* bus error instead of returning 0xffffffff. This handler always returns 0
@ -810,7 +802,6 @@ static int __init ks_pcie_host_init(struct pcie_port *pp)
ks_pcie_stop_link(pci);
ks_pcie_setup_rc_app_regs(ks_pcie);
ks_pcie_setup_interrupts(ks_pcie);
writew(PCI_IO_RANGE_TYPE_32 | (PCI_IO_RANGE_TYPE_32 << 8),
pci->dbi_base + PCI_IO_BASE);
@ -854,23 +845,6 @@ static int __init ks_pcie_add_pcie_port(struct keystone_pcie *ks_pcie,
struct device *dev = &pdev->dev;
int ret;
/*
* Index 0 is the platform interrupt for error interrupt
* from RC. This is optional.
*/
ks_pcie->error_irq = irq_of_parse_and_map(ks_pcie->np, 0);
if (ks_pcie->error_irq <= 0)
dev_info(dev, "no error IRQ defined\n");
else {
ret = request_irq(ks_pcie->error_irq, ks_pcie_err_irq_handler,
IRQF_SHARED, "pcie-error-irq", ks_pcie);
if (ret < 0) {
dev_err(dev, "failed to request error IRQ %d\n",
ks_pcie->error_irq);
return ret;
}
}
pp->ops = &ks_pcie_host_ops;
ret = ks_pcie_dw_host_init(ks_pcie);
if (ret) {
@ -946,6 +920,7 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
u32 num_lanes;
char name[10];
int ret;
int irq;
int i;
ks_pcie = devm_kzalloc(dev, sizeof(*ks_pcie), GFP_KERNEL);
@ -965,6 +940,20 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
return ret;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "missing IRQ resource: %d\n", irq);
return irq;
}
ret = request_irq(irq, ks_pcie_err_irq_handler, IRQF_SHARED,
"ks-pcie-error-irq", ks_pcie);
if (ret < 0) {
dev_err(dev, "failed to request error IRQ %d\n",
irq);
return ret;
}
ret = of_property_read_u32(np, "num-lanes", &num_lanes);
if (ret)
num_lanes = 1;
@ -1020,6 +1009,8 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
if (ret < 0)
goto err_get_sync;
ks_pcie_enable_error_irq(ks_pcie);
return 0;
err_get_sync: