[RFC 3/9] of/irq: simplify args to irq_create_of_mapping

Grant Likely
2013-10-15T20:42:01Z

All the callers of irq_create_of_mapping() pass the contents of a struct
of_phandle_args structure to the function. Since all the callers already
have an of_phandle_args pointer, why not pass it directly to
irq_create_of_mapping()?

Signed-off-by: Grant Likely <grant.likely@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/mach-integrator/pci_v3.c | 2 +-
arch/microblaze/pci/pci-common.c | 2 +-
arch/mips/pci/fixup-lantiq.c | 2 +-
arch/mips/pci/pci-rt3883.c | 2 +-
arch/powerpc/kernel/pci-common.c | 2 +-
arch/powerpc/platforms/cell/celleb_scc_pciex.c | 2 +-
arch/powerpc/platforms/cell/celleb_scc_sio.c | 2 +-
arch/powerpc/platforms/cell/spider-pic.c | 7 ++-----
arch/powerpc/platforms/cell/spu_manage.c | 3 +--
arch/powerpc/platforms/fsl_uli1575.c | 2 +-
arch/powerpc/platforms/pseries/event_sources.c | 3 +--
arch/x86/kernel/devicetree.c | 2 +-
drivers/of/irq.c | 2 +-
drivers/pci/host/pci-mvebu.c | 2 +-
include/linux/of_irq.h | 4 +---
kernel/irq/irqdomain.c | 13 ++++++-------
16 files changed, 22 insertions(+), 30 deletions(-)

diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c
index 2d6b4da..bb3aeb3 100644
--- a/arch/arm/mach-integrator/pci_v3.c
+++ b/arch/arm/mach-integrator/pci_v3.c
@@ -847,7 +847,7 @@ static int __init pci_v3_map_irq_dt(const struct pci_dev *dev, u8 slot, u8 pin)
return 0;
}

- return irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ return irq_create_of_mapping(&oirq);
}

static int __init pci_v3_dtprobe(struct platform_device *pdev,
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index c9302c4..60b386c 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -246,7 +246,7 @@ int pci_read_irq_line(struct pci_dev *pci_dev)
oirq.args_count, oirq.args[0], oirq.args[1],
of_node_full_name(oirq.np));

- virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ virq = irq_create_of_mapping(&oirq);
}
if (!virq) {
pr_debug(" Failed to map !\n");
diff --git a/arch/mips/pci/fixup-lantiq.c b/arch/mips/pci/fixup-lantiq.c
index 81ff0b5..aef60e7 100644
--- a/arch/mips/pci/fixup-lantiq.c
+++ b/arch/mips/pci/fixup-lantiq.c
@@ -33,7 +33,7 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
slot, pin);
return 0;
}
- irq = irq_create_of_mapping(dev_irq.np, dev_irq.args, dev_irq.args_count);
+ irq = irq_create_of_mapping(&dev_irq);
dev_info(&dev->dev, "SLOT:%d PIN:%d IRQ:%d\n", slot, pin, irq);
return irq;
}
diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c
index 0f08a5b..eadc431 100644
--- a/arch/mips/pci/pci-rt3883.c
+++ b/arch/mips/pci/pci-rt3883.c
@@ -594,7 +594,7 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
return 0;
}

- irq = irq_create_of_mapping(dev_irq.np, dev_irq.args, dev_irq.args_count);
+ irq = irq_create_of_mapping(&dev_irq);

if (irq == 0)
pr_crit("pci %s: no irq found for pin %u\n",
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 96c4623..a1e3e40 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -266,7 +266,7 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
oirq.args_count, oirq.args[0], oirq.args[1],
of_node_full_name(oirq.np));

- virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ virq = irq_create_of_mapping(&oirq);
}
if(virq == NO_IRQ) {
pr_debug(" Failed to map !\n");
diff --git a/arch/powerpc/platforms/cell/celleb_scc_pciex.c b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
index e8d34d1..b3ea96d 100644
--- a/arch/powerpc/platforms/cell/celleb_scc_pciex.c
+++ b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
@@ -511,7 +511,7 @@ static __init int celleb_setup_pciex(struct device_node *node,
pr_err("PCIEXC:Failed to map irq\n");
goto error;
}
- virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ virq = irq_create_of_mapping(&oirq);
if (request_irq(virq, pciex_handle_internal_irq,
0, "pciex", (void *)phb)) {
pr_err("PCIEXC:Failed to request irq\n");
diff --git a/arch/powerpc/platforms/cell/celleb_scc_sio.c b/arch/powerpc/platforms/cell/celleb_scc_sio.c
index 06046d5..c8eb571 100644
--- a/arch/powerpc/platforms/cell/celleb_scc_sio.c
+++ b/arch/powerpc/platforms/cell/celleb_scc_sio.c
@@ -66,7 +66,7 @@ static int __init txx9_serial_init(void)
#ifdef CONFIG_SERIAL_TXX9_CONSOLE
req.membase = ioremap(req.mapbase, 0x24);
#endif
- req.irq = irq_create_of_mapping(irq.np, irq.args, irq.args_count);
+ req.irq = irq_create_of_mapping(&irq);
req.flags |= UPF_IOREMAP | UPF_BUGGY_UART
/*HAVE_CTS_LINE*/;
req.uartclk = 83300000;
diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c
index 6e842fd..d206804 100644
--- a/arch/powerpc/platforms/cell/spider-pic.c
+++ b/arch/powerpc/platforms/cell/spider-pic.c
@@ -236,11 +236,8 @@ static unsigned int __init spider_find_cascade_and_node(struct spider_pic *pic)
* tree in case the device-tree is ever fixed
*/
struct of_phandle_args oirq;
- if (of_irq_parse_one(pic->host->of_node, 0, &oirq) == 0) {
- virq = irq_create_of_mapping(oirq.np, oirq.args,
- oirq.args_count);
- return virq;
- }
+ if (of_irq_parse_one(pic->host->of_node, 0, &oirq) == 0)
+ return irq_create_of_mapping(&oirq);

/* Now do the horrible hacks */
tmp = of_get_property(pic->host->of_node, "#interrupt-cells", NULL);
diff --git a/arch/powerpc/platforms/cell/spu_manage.c b/arch/powerpc/platforms/cell/spu_manage.c
index e9eb4f8..c3327f3 100644
--- a/arch/powerpc/platforms/cell/spu_manage.c
+++ b/arch/powerpc/platforms/cell/spu_manage.c
@@ -190,8 +190,7 @@ static int __init spu_map_interrupts(struct spu *spu, struct device_node *np)
ret = -EINVAL;
pr_debug(" irq %d no 0x%x on %s\n", i, oirq.args[0],
oirq.np->full_name);
- spu->irqs[i] = irq_create_of_mapping(oirq.np,
- oirq.args, oirq.args_count);
+ spu->irqs[i] = irq_create_of_mapping(&oirq);
if (spu->irqs[i] == NO_IRQ) {
pr_debug("spu_new: failed to map it !\n");
goto err;
diff --git a/arch/powerpc/platforms/fsl_uli1575.c b/arch/powerpc/platforms/fsl_uli1575.c
index 288226d..8904046 100644
--- a/arch/powerpc/platforms/fsl_uli1575.c
+++ b/arch/powerpc/platforms/fsl_uli1575.c
@@ -334,7 +334,7 @@ static void hpcd_final_uli5288(struct pci_dev *dev)
laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(31, 0) << 8);
laddr[1] = laddr[2] = 0;
of_irq_parse_raw(hosenode, &pin, 1, laddr, &oirq);
- dev->irq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ dev->irq = irq_create_of_mapping(&oirq);
}

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, hpcd_quirk_uli1575);
diff --git a/arch/powerpc/platforms/pseries/event_sources.c b/arch/powerpc/platforms/pseries/event_sources.c
index 6dcf9cc..18380e8 100644
--- a/arch/powerpc/platforms/pseries/event_sources.c
+++ b/arch/powerpc/platforms/pseries/event_sources.c
@@ -59,8 +59,7 @@ void request_event_sources_irqs(struct device_node *np,
index++) {
if (count > 15)
break;
- virqs[count] = irq_create_of_mapping(oirq.np, oirq.args,
- oirq.args_count);
+ virqs[count] = irq_create_of_mapping(&oirq);
if (virqs[count] == NO_IRQ) {
pr_err("event-sources: Unable to allocate "
"interrupt number for %s\n",
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index 0098698..d39948f 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -120,7 +120,7 @@ static int x86_of_pci_irq_enable(struct pci_dev *dev)
if (ret)
return ret;

- virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ virq = irq_create_of_mapping(&oirq);
if (virq == 0)
return -EINVAL;
dev->irq = virq;
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index a7db38a..84184c4 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -41,7 +41,7 @@ unsigned int irq_of_parse_and_map(struct device_node *dev, int index)
if (of_irq_parse_one(dev, index, &oirq))
return 0;

- return irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ return irq_create_of_mapping(&oirq);
}
EXPORT_SYMBOL_GPL(irq_of_parse_and_map);

diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index c5e57f8..3a8d01e 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -654,7 +654,7 @@ static int __init mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
if (ret)
return ret;

- return irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
+ return irq_create_of_mapping(&oirq);
}

static struct pci_bus *mvebu_pcie_scan_bus(int nr, struct pci_sys_data *sys)
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 8d9f855..3bbba8d 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -37,9 +37,7 @@ extern int of_irq_parse_raw(struct device_node *parent, const __be32 *intspec,
struct of_phandle_args *out_irq);
extern int of_irq_parse_one(struct device_node *device, int index,
struct of_phandle_args *out_irq);
-extern unsigned int irq_create_of_mapping(struct device_node *controller,
- const u32 *intspec,
- unsigned int intsize);
+extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
extern int of_irq_to_resource(struct device_node *dev, int index,
struct resource *r);
extern int of_irq_count(struct device_node *dev);
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 706724e..cf68bb36 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -465,27 +465,26 @@ int irq_create_strict_mappings(struct irq_domain *domain, unsigned int irq_base,
}
EXPORT_SYMBOL_GPL(irq_create_strict_mappings);

-unsigned int irq_create_of_mapping(struct device_node *controller,
- const u32 *intspec, unsigned int intsize)
+unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data)
{
struct irq_domain *domain;
irq_hw_number_t hwirq;
unsigned int type = IRQ_TYPE_NONE;
unsigned int virq;

- domain = controller ? irq_find_host(controller) : irq_default_domain;
+ domain = irq_data->np ? irq_find_host(irq_data->np) : irq_default_domain;
if (!domain) {
pr_warn("no irq domain found for %s !\n",
- of_node_full_name(controller));
+ of_node_full_name(irq_data->np));
return 0;
}

/* If domain has no translation, then we assume interrupt line */
if (domain->ops->xlate == NULL)
- hwirq = intspec[0];
+ hwirq = irq_data->args[0];
else {
- if (domain->ops->xlate(domain, controller, intspec, intsize,
- &hwirq, &type))
+ if (domain->ops->xlate(domain, irq_data->np, irq_data->args,
+ irq_data->args_count, &hwirq, &type))
return 0;
}

--
1.8.1.2