[PATCH 01/16] irqdomain: Use an accessor for the of_node field

From: Marc Zyngier
Date: Tue Oct 06 2015 - 13:42:00 EST

The struct irq_domain contains a "struct device_node *" field
(of_node) that is almost the only link between the irqdomain
and the device tree infrastructure.

In order to prepare for the removal of that field, convert all
users to use an accessor.

Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
arch/arm/mach-omap2/omap-wakeupgen.c | 2 +-
arch/c6x/platforms/megamod-pic.c | 2 +-
arch/mips/cavium-octeon/octeon-irq.c | 4 ++--
arch/powerpc/platforms/cell/axon_msi.c | 2 +-
arch/powerpc/platforms/cell/spider-pic.c | 9 +++++---
arch/powerpc/platforms/pasemi/msi.c | 6 ++++--
arch/powerpc/platforms/powernv/opal-irqchip.c | 2 +-
arch/powerpc/sysdev/ehv_pic.c | 3 ++-
arch/powerpc/sysdev/fsl_msi.c | 2 +-
arch/powerpc/sysdev/i8259.c | 3 ++-
arch/powerpc/sysdev/ipic.c | 3 ++-
arch/powerpc/sysdev/mpic.c | 3 ++-
arch/powerpc/sysdev/mpic_msi.c | 2 +-
arch/powerpc/sysdev/qe_lib/qe_ic.c | 3 ++-
drivers/gpio/gpio-sodaville.c | 2 +-
drivers/irqchip/exynos-combiner.c | 2 +-
drivers/irqchip/irq-atmel-aic-common.c | 2 +-
drivers/irqchip/irq-crossbar.c | 4 ++--
drivers/irqchip/irq-gic-v2m.c | 2 +-
drivers/irqchip/irq-gic-v3-its.c | 2 +-
drivers/irqchip/irq-gic-v3.c | 2 +-
drivers/irqchip/irq-gic.c | 2 +-
drivers/irqchip/irq-hip04.c | 2 +-
drivers/irqchip/irq-imx-gpcv2.c | 2 +-
drivers/irqchip/irq-mtk-sysirq.c | 2 +-
drivers/irqchip/irq-s3c24xx.c | 4 ++--
drivers/irqchip/irq-tegra.c | 4 ++--
drivers/irqchip/irq-vf610-mscm-ir.c | 5 +++--
drivers/spmi/spmi-pmic-arb.c | 2 +-
include/linux/irqdomain.h | 5 +++++
kernel/irq/irqdomain.c | 30 +++++++++++++++++++--------
31 files changed, 74 insertions(+), 46 deletions(-)

diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
index e1d2e99..a52fe5b 100644
--- a/arch/arm/mach-omap2/omap-wakeupgen.c
+++ b/arch/arm/mach-omap2/omap-wakeupgen.c
@@ -441,7 +441,7 @@ static int wakeupgen_domain_alloc(struct irq_domain *domain,
&wakeupgen_chip, NULL);

parent_args = *args;
- parent_args.np = domain->parent->of_node;
+ parent_args.np = irq_domain_get_of_node(domain->parent);
return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args);
}

diff --git a/arch/c6x/platforms/megamod-pic.c b/arch/c6x/platforms/megamod-pic.c
index ddcb45d..43afc03 100644
--- a/arch/c6x/platforms/megamod-pic.c
+++ b/arch/c6x/platforms/megamod-pic.c
@@ -178,7 +178,7 @@ static void __init set_megamod_mux(struct megamod_pic *pic, int src, int output)
static void __init parse_priority_map(struct megamod_pic *pic,
int *mapping, int size)
{
- struct device_node *np = pic->irqhost->of_node;
+ struct device_node *np = irq_domain_get_of_node(pic->irqhost);
const __be32 *map;
int i, maplen;
u32 val;
diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
index 0352bc8..4f9eb05 100644
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -1094,7 +1094,7 @@ static int octeon_irq_gpio_xlat(struct irq_domain *d,
unsigned int pin;
unsigned int trigger;

- if (d->of_node != node)
+ if (irq_domain_get_of_node(d) != node)
return -EINVAL;

if (intsize < 2)
@@ -2163,7 +2163,7 @@ static int octeon_irq_cib_map(struct irq_domain *d,

if (hw >= host_data->max_bits) {
pr_err("ERROR: %s mapping %u is to big!\n",
- d->of_node->name, (unsigned)hw);
+ irq_domain_get_of_node(d)->name, (unsigned)hw);
return -EINVAL;
}

diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c
index e0e68a1..aed7714 100644
--- a/arch/powerpc/platforms/cell/axon_msi.c
+++ b/arch/powerpc/platforms/cell/axon_msi.c
@@ -327,7 +327,7 @@ static void axon_msi_shutdown(struct platform_device *device)
u32 tmp;

pr_devel("axon_msi: disabling %s\n",
- msic->irq_domain->of_node->full_name);
+ irq_domain_get_of_node(msic->irq_domain)->full_name);
tmp = dcr_read(msic->dcr_host, MSIC_CTRL_REG);
tmp &= ~MSIC_CTRL_ENABLE & ~MSIC_CTRL_IRQ_ENABLE;
msic_dcr_write(msic, MSIC_CTRL_REG, tmp);
diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c
index 9d27de6..54ee574 100644
--- a/arch/powerpc/platforms/cell/spider-pic.c
+++ b/arch/powerpc/platforms/cell/spider-pic.c
@@ -231,20 +231,23 @@ static unsigned int __init spider_find_cascade_and_node(struct spider_pic *pic)
const u32 *imap, *tmp;
int imaplen, intsize, unit;
struct device_node *iic;
+ struct device_node *of_node;
+
+ of_node = irq_domain_get_of_node(pic->host);

/* First, we check whether we have a real "interrupts" in the device
* tree in case the device-tree is ever fixed
*/
- virq = irq_of_parse_and_map(pic->host->of_node, 0);
+ virq = irq_of_parse_and_map(of_node, 0);
if (virq)
return virq;

/* Now do the horrible hacks */
- tmp = of_get_property(pic->host->of_node, "#interrupt-cells", NULL);
+ tmp = of_get_property(of_node, "#interrupt-cells", NULL);
if (tmp == NULL)
return NO_IRQ;
intsize = *tmp;
- imap = of_get_property(pic->host->of_node, "interrupt-map", &imaplen);
+ imap = of_get_property(of_node, "interrupt-map", &imaplen);
if (imap == NULL || imaplen < (intsize + 1))
return NO_IRQ;
iic = of_find_node_by_phandle(imap[intsize]);
diff --git a/arch/powerpc/platforms/pasemi/msi.c b/arch/powerpc/platforms/pasemi/msi.c
index b304a9f..d9af763 100644
--- a/arch/powerpc/platforms/pasemi/msi.c
+++ b/arch/powerpc/platforms/pasemi/msi.c
@@ -144,9 +144,11 @@ int mpic_pasemi_msi_init(struct mpic *mpic)
{
int rc;
struct pci_controller *phb;
+ struct device_node *of_node;

- if (!mpic->irqhost->of_node ||
- !of_device_is_compatible(mpic->irqhost->of_node,
+ of_node = irq_domain_get_of_node(mpic->irqhost);
+ if (!of_node ||
+ !of_device_is_compatible(of_node,
"pasemi,pwrficient-openpic"))
return -ENODEV;

diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c
index 2c91ee7..6ccfb6c 100644
--- a/arch/powerpc/platforms/powernv/opal-irqchip.c
+++ b/arch/powerpc/platforms/powernv/opal-irqchip.c
@@ -137,7 +137,7 @@ static void opal_handle_irq_work(struct irq_work *work)
static int opal_event_match(struct irq_domain *h, struct device_node *node,
enum irq_domain_bus_token bus_token)
{
- return h->of_node == node;
+ return irq_domain_get_of_node(h) == node;
}

static int opal_event_xlate(struct irq_domain *h, struct device_node *np,
diff --git a/arch/powerpc/sysdev/ehv_pic.c b/arch/powerpc/sysdev/ehv_pic.c
index eca0b00..bffcc7a 100644
--- a/arch/powerpc/sysdev/ehv_pic.c
+++ b/arch/powerpc/sysdev/ehv_pic.c
@@ -181,7 +181,8 @@ static int ehv_pic_host_match(struct irq_domain *h, struct device_node *node,
enum irq_domain_bus_token bus_token)
{
/* Exact match, unless ehv_pic node is NULL */
- return h->of_node == NULL || h->of_node == node;
+ struct device_node *of_node = irq_domain_get_of_node(h);
+ return of_node == NULL || of_node == node;
}

static int ehv_pic_host_map(struct irq_domain *h, unsigned int virq,
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 48a576a..3a2be36 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -110,7 +110,7 @@ static int fsl_msi_init_allocator(struct fsl_msi *msi_data)
int rc, hwirq;

rc = msi_bitmap_alloc(&msi_data->bitmap, NR_MSI_IRQS_MAX,
- msi_data->irqhost->of_node);
+ irq_domain_get_of_node(msi_data->irqhost));
if (rc)
return rc;

diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c
index e1a9c2c..6f99ed3 100644
--- a/arch/powerpc/sysdev/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -165,7 +165,8 @@ static struct resource pic_edgectrl_iores = {
static int i8259_host_match(struct irq_domain *h, struct device_node *node,
enum irq_domain_bus_token bus_token)
{
- return h->of_node == NULL || h->of_node == node;
+ struct device_node *of_node = irq_domain_get_of_node(h);
+ return of_node == NULL || of_node == node;
}

static int i8259_host_map(struct irq_domain *h, unsigned int virq,
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index b1297ab..f76ee39 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -675,7 +675,8 @@ static int ipic_host_match(struct irq_domain *h, struct device_node *node,
enum irq_domain_bus_token bus_token)
{
/* Exact match, unless ipic node is NULL */
- return h->of_node == NULL || h->of_node == node;
+ struct device_node *of_node = irq_domain_get_of_node(h);
+ return of_node == NULL || of_node == node;
}

static int ipic_host_map(struct irq_domain *h, unsigned int virq,
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 537e5db..cecd115 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1011,7 +1011,8 @@ static int mpic_host_match(struct irq_domain *h, struct device_node *node,
enum irq_domain_bus_token bus_token)
{
/* Exact match, unless mpic node is NULL */
- return h->of_node == NULL || h->of_node == node;
+ struct device_node *of_node = irq_domain_get_of_node(h);
+ return of_node == NULL || of_node == node;
}

static int mpic_host_map(struct irq_domain *h, unsigned int virq,
diff --git a/arch/powerpc/sysdev/mpic_msi.c b/arch/powerpc/sysdev/mpic_msi.c
index 7dc39f3..1d48a53 100644
--- a/arch/powerpc/sysdev/mpic_msi.c
+++ b/arch/powerpc/sysdev/mpic_msi.c
@@ -84,7 +84,7 @@ int mpic_msi_init_allocator(struct mpic *mpic)
int rc;

rc = msi_bitmap_alloc(&mpic->msi_bitmap, mpic->num_sources,
- mpic->irqhost->of_node);
+ irq_domain_get_of_node(mpic->irqhost));
if (rc)
return rc;

diff --git a/arch/powerpc/sysdev/qe_lib/qe_ic.c b/arch/powerpc/sysdev/qe_lib/qe_ic.c
index fbcc1f8..ef36f16 100644
--- a/arch/powerpc/sysdev/qe_lib/qe_ic.c
+++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c
@@ -248,7 +248,8 @@ static int qe_ic_host_match(struct irq_domain *h, struct device_node *node,
enum irq_domain_bus_token bus_token)
{
/* Exact match, unless qe_ic node is NULL */
- return h->of_node == NULL || h->of_node == node;
+ struct device_node *of_node = irq_domain_get_of_node(h);
+ return of_node == NULL || of_node == node;
}

static int qe_ic_host_map(struct irq_domain *h, unsigned int virq,
diff --git a/drivers/gpio/gpio-sodaville.c b/drivers/gpio/gpio-sodaville.c
index 65bc9f4..34b02b4 100644
--- a/drivers/gpio/gpio-sodaville.c
+++ b/drivers/gpio/gpio-sodaville.c
@@ -102,7 +102,7 @@ static int sdv_xlate(struct irq_domain *h, struct device_node *node,
{
u32 line, type;

- if (node != h->of_node)
+ if (node != irq_domain_get_of_node(h))
return -EINVAL;

if (intsize < 2)
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index cd7d3bc..ead15be 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -144,7 +144,7 @@ static int combiner_irq_domain_xlate(struct irq_domain *d,
unsigned long *out_hwirq,
unsigned int *out_type)
{
- if (d->of_node != controller)
+ if (irq_domain_get_of_node(d) != controller)
return -EINVAL;

if (intsize < 2)
diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c
index 63cd031..b12a5d5 100644
--- a/drivers/irqchip/irq-atmel-aic-common.c
+++ b/drivers/irqchip/irq-atmel-aic-common.c
@@ -114,7 +114,7 @@ int aic_common_irq_domain_xlate(struct irq_domain *d,

static void __init aic_common_ext_irq_of_init(struct irq_domain *domain)
{
- struct device_node *node = domain->of_node;
+ struct device_node *node = irq_domain_get_of_node(domain);
struct irq_chip_generic *gc;
struct aic_chip_data *aic;
struct property *prop;
diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
index a7f5626..f1d666a 100644
--- a/drivers/irqchip/irq-crossbar.c
+++ b/drivers/irqchip/irq-crossbar.c
@@ -94,7 +94,7 @@ static int allocate_gic_irq(struct irq_domain *domain, unsigned virq,
if (i < 0)
return -ENODEV;

- args.np = domain->parent->of_node;
+ args.np = irq_domain_get_of_node(domain->parent);
args.args_count = 3;
args.args[0] = 0; /* SPI */
args.args[1] = i;
@@ -172,7 +172,7 @@ static int crossbar_domain_xlate(struct irq_domain *d,
unsigned long *out_hwirq,
unsigned int *out_type)
{
- if (d->of_node != controller)
+ if (irq_domain_get_of_node(d) != controller)
return -EINVAL; /* Shouldn't happen, really... */
if (intsize != 3)
return -EINVAL; /* Not GIC compliant */
diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index 12985da..695d489 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c
@@ -117,7 +117,7 @@ static int gicv2m_irq_gic_domain_alloc(struct irq_domain *domain,
struct irq_data *d;
int err;

- args.np = domain->parent->of_node;
+ args.np = irq_domain_get_of_node(domain->parent);
args.args_count = 3;
args.args[0] = 0;
args.args[1] = hwirq - 32;
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 25ceae9f..ea4e5b2 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1243,7 +1243,7 @@ static int its_irq_gic_domain_alloc(struct irq_domain *domain,
{
struct of_phandle_args args;

- args.np = domain->parent->of_node;
+ args.np = irq_domain_get_of_node(domain->parent);
args.args_count = 3;
args.args[0] = GIC_IRQ_TYPE_LPI;
args.args[1] = hwirq;
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 36ecfc8..4c97ab6 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -776,7 +776,7 @@ static int gic_irq_domain_xlate(struct irq_domain *d,
const u32 *intspec, unsigned int intsize,
unsigned long *out_hwirq, unsigned int *out_type)
{
- if (d->of_node != controller)
+ if (irq_domain_get_of_node(d) != controller)
return -EINVAL;
if (intsize < 3)
return -EINVAL;
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 982c09c..7f53acb 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -910,7 +910,7 @@ static int gic_irq_domain_xlate(struct irq_domain *d,
{
unsigned long ret = 0;

- if (d->of_node != controller)
+ if (irq_domain_get_of_node(d) != controller)
return -EINVAL;
if (intsize < 3)
return -EINVAL;
diff --git a/drivers/irqchip/irq-hip04.c b/drivers/irqchip/irq-hip04.c
index 8f3ca8f..9688d2e 100644
--- a/drivers/irqchip/irq-hip04.c
+++ b/drivers/irqchip/irq-hip04.c
@@ -325,7 +325,7 @@ static int hip04_irq_domain_xlate(struct irq_domain *d,
{
unsigned long ret = 0;

- if (d->of_node != controller)
+ if (irq_domain_get_of_node(d) != controller)
return -EINVAL;
if (intsize < 3)
return -EINVAL;
diff --git a/drivers/irqchip/irq-imx-gpcv2.c b/drivers/irqchip/irq-imx-gpcv2.c
index e48d330..8bba3c0 100644
--- a/drivers/irqchip/irq-imx-gpcv2.c
+++ b/drivers/irqchip/irq-imx-gpcv2.c
@@ -202,7 +202,7 @@ static int imx_gpcv2_domain_alloc(struct irq_domain *domain,
}

parent_args = *args;
- parent_args.np = domain->parent->of_node;
+ parent_args.np = irq_domain_get_of_node(domain->parent);
return irq_domain_alloc_irqs_parent(domain, irq, nr_irqs, &parent_args);
}

diff --git a/drivers/irqchip/irq-mtk-sysirq.c b/drivers/irqchip/irq-mtk-sysirq.c
index c8753da..b072166 100644
--- a/drivers/irqchip/irq-mtk-sysirq.c
+++ b/drivers/irqchip/irq-mtk-sysirq.c
@@ -106,7 +106,7 @@ static int mtk_sysirq_domain_alloc(struct irq_domain *domain, unsigned int virq,
&mtk_sysirq_chip,
domain->host_data);

- gic_data.np = domain->parent->of_node;
+ gic_data.np = irq_domain_get_of_node(domain->parent);
return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &gic_data);
}

diff --git a/drivers/irqchip/irq-s3c24xx.c b/drivers/irqchip/irq-s3c24xx.c
index 7154b01..c71914e 100644
--- a/drivers/irqchip/irq-s3c24xx.c
+++ b/drivers/irqchip/irq-s3c24xx.c
@@ -311,7 +311,7 @@ static void s3c_irq_demux(struct irq_desc *desc)
* and one big domain for the dt case where the subintc
* starts at hwirq number 32.
*/
- offset = (intc->domain->of_node) ? 32 : 0;
+ offset = irq_domain_get_of_node(intc->domain) ? 32 : 0;

chained_irq_enter(chip, desc);

@@ -342,7 +342,7 @@ static inline int s3c24xx_handle_intc(struct s3c_irq_intc *intc,
return false;

/* non-dt machines use individual domains */
- if (!intc->domain->of_node)
+ if (!irq_domain_get_of_node(intc->domain))
intc_offset = 0;

/* We have a problem that the INTOFFSET register does not always
diff --git a/drivers/irqchip/irq-tegra.c b/drivers/irqchip/irq-tegra.c
index 2fd89eb..7bbf226 100644
--- a/drivers/irqchip/irq-tegra.c
+++ b/drivers/irqchip/irq-tegra.c
@@ -227,7 +227,7 @@ static int tegra_ictlr_domain_xlate(struct irq_domain *domain,
unsigned long *out_hwirq,
unsigned int *out_type)
{
- if (domain->of_node != controller)
+ if (irq_domain_get_of_node(domain) != controller)
return -EINVAL; /* Shouldn't happen, really... */
if (intsize != 3)
return -EINVAL; /* Not GIC compliant */
@@ -267,7 +267,7 @@ static int tegra_ictlr_domain_alloc(struct irq_domain *domain,
}

parent_args = *args;
- parent_args.np = domain->parent->of_node;
+ parent_args.np = irq_domain_get_of_node(domain->parent);
return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args);
}

diff --git a/drivers/irqchip/irq-vf610-mscm-ir.c b/drivers/irqchip/irq-vf610-mscm-ir.c
index 2c22558..ae82d7e 100644
--- a/drivers/irqchip/irq-vf610-mscm-ir.c
+++ b/drivers/irqchip/irq-vf610-mscm-ir.c
@@ -142,7 +142,7 @@ static int vf610_mscm_ir_domain_alloc(struct irq_domain *domain, unsigned int vi
&vf610_mscm_ir_irq_chip,
domain->host_data);

- gic_data.np = domain->parent->of_node;
+ gic_data.np = irq_domain_get_of_node(domain->parent);

if (mscm_ir_data->is_nvic) {
gic_data.args_count = 1;
@@ -205,7 +205,8 @@ static int __init vf610_mscm_ir_of_init(struct device_node *node,
goto out_unmap;
}

- if (of_device_is_compatible(domain->parent->of_node, "arm,armv7m-nvic"))
+ if (of_device_is_compatible(irq_domain_get_of_node(domain->parent),
+ "arm,armv7m-nvic"))
mscm_ir_data->is_nvic = true;

cpu_pm_register_notifier(&mscm_ir_notifier_block);
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 4a3cf9b..fb36810 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -657,7 +657,7 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d,
"intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n",
intspec[0], intspec[1], intspec[2]);

- if (d->of_node != controller)
+ if (irq_domain_get_of_node(d) != controller)
return -EINVAL;
if (intsize != 4)
return -EINVAL;
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index d3ca792..f644fdb 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -161,6 +161,11 @@ enum {
IRQ_DOMAIN_FLAG_NONCORE = (1 << 16),
};

+static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
+{
+ return d->of_node;
+}
+
#ifdef CONFIG_IRQ_DOMAIN
struct irq_domain *__irq_domain_add(struct device_node *of_node, int size,
irq_hw_number_t hwirq_max, int direct_max,
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index dc9d27c..8f8b538 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -102,7 +102,7 @@ void irq_domain_remove(struct irq_domain *domain)

pr_debug("Removed domain %s\n", domain->name);

- of_node_put(domain->of_node);
+ of_node_put(irq_domain_get_of_node(domain));
kfree(domain);
}
EXPORT_SYMBOL_GPL(irq_domain_remove);
@@ -208,10 +208,12 @@ struct irq_domain *irq_find_matching_host(struct device_node *node,
*/
mutex_lock(&irq_domain_mutex);
list_for_each_entry(h, &irq_domain_list, link) {
+ struct device_node *of_node;
+ of_node = irq_domain_get_of_node(h);
if (h->ops->match)
rc = h->ops->match(h, node, bus_token);
else
- rc = ((h->of_node != NULL) && (h->of_node == node) &&
+ rc = ((of_node != NULL) && (of_node == node) &&
((bus_token == DOMAIN_BUS_ANY) ||
(h->bus_token == bus_token)));

@@ -336,10 +338,12 @@ EXPORT_SYMBOL_GPL(irq_domain_associate);
void irq_domain_associate_many(struct irq_domain *domain, unsigned int irq_base,
irq_hw_number_t hwirq_base, int count)
{
+ struct device_node *of_node;
int i;

+ of_node = irq_domain_get_of_node(domain);
pr_debug("%s(%s, irqbase=%i, hwbase=%i, count=%i)\n", __func__,
- of_node_full_name(domain->of_node), irq_base, (int)hwirq_base, count);
+ of_node_full_name(of_node), irq_base, (int)hwirq_base, count);

for (i = 0; i < count; i++) {
irq_domain_associate(domain, irq_base + i, hwirq_base + i);
@@ -359,12 +363,14 @@ EXPORT_SYMBOL_GPL(irq_domain_associate_many);
*/
unsigned int irq_create_direct_mapping(struct irq_domain *domain)
{
+ struct device_node *of_node;
unsigned int virq;

if (domain == NULL)
domain = irq_default_domain;

- virq = irq_alloc_desc_from(1, of_node_to_nid(domain->of_node));
+ of_node = irq_domain_get_of_node(domain);
+ virq = irq_alloc_desc_from(1, of_node_to_nid(of_node));
if (!virq) {
pr_debug("create_direct virq allocation failed\n");
return 0;
@@ -399,6 +405,7 @@ EXPORT_SYMBOL_GPL(irq_create_direct_mapping);
unsigned int irq_create_mapping(struct irq_domain *domain,
irq_hw_number_t hwirq)
{
+ struct device_node *of_node;
int virq;

pr_debug("irq_create_mapping(0x%p, 0x%lx)\n", domain, hwirq);
@@ -412,6 +419,8 @@ unsigned int irq_create_mapping(struct irq_domain *domain,
}
pr_debug("-> using domain @%p\n", domain);

+ of_node = irq_domain_get_of_node(domain);
+
/* Check if mapping already exists */
virq = irq_find_mapping(domain, hwirq);
if (virq) {
@@ -420,8 +429,7 @@ unsigned int irq_create_mapping(struct irq_domain *domain,
}

/* Allocate a virtual interrupt number */
- virq = irq_domain_alloc_descs(-1, 1, hwirq,
- of_node_to_nid(domain->of_node));
+ virq = irq_domain_alloc_descs(-1, 1, hwirq, of_node_to_nid(of_node));
if (virq <= 0) {
pr_debug("-> virq allocation failed\n");
return 0;
@@ -433,7 +441,7 @@ unsigned int irq_create_mapping(struct irq_domain *domain,
}

pr_debug("irq %lu on domain %s mapped to virtual irq %u\n",
- hwirq, of_node_full_name(domain->of_node), virq);
+ hwirq, of_node_full_name(of_node), virq);

return virq;
}
@@ -460,10 +468,12 @@ EXPORT_SYMBOL_GPL(irq_create_mapping);
int irq_create_strict_mappings(struct irq_domain *domain, unsigned int irq_base,
irq_hw_number_t hwirq_base, int count)
{
+ struct device_node *of_node;
int ret;

+ of_node = irq_domain_get_of_node(domain);
ret = irq_alloc_descs(irq_base, irq_base, count,
- of_node_to_nid(domain->of_node));
+ of_node_to_nid(of_node));
if (unlikely(ret < 0))
return ret;

@@ -590,14 +600,16 @@ static int virq_debug_show(struct seq_file *m, void *private)
"name", "mapped", "linear-max", "direct-max", "devtree-node");
mutex_lock(&irq_domain_mutex);
list_for_each_entry(domain, &irq_domain_list, link) {
+ struct device_node *of_node;
int count = 0;
+ of_node = irq_domain_get_of_node(domain);
radix_tree_for_each_slot(slot, &domain->revmap_tree, &iter, 0)
count++;
seq_printf(m, "%c%-16s %6u %10u %10u %s\n",
domain == irq_default_domain ? '*' : ' ', domain->name,
domain->revmap_size + count, domain->revmap_size,
domain->revmap_direct_max_irq,
- domain->of_node ? of_node_full_name(domain->of_node) : "");
+ of_node ? of_node_full_name(of_node) : "");
}
mutex_unlock(&irq_domain_mutex);

--
2.1.4

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