Mostly this is to get allmodconfig builds going clean again.
Drivers using this interface aren't actually even possible
on sparc systems.
On sparc we pre-compute IRQ values, therefore the implementation
is simply to find the platform_device which matches the given
device node, then return the pre-computed IRQ value if the
requested index is in-range.
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
arch/sparc/include/asm/irq_32.h | 3 +++
arch/sparc/include/asm/irq_64.h | 2 ++
arch/sparc/kernel/prom_common.c | 24 ++++++++++++++++++++++++
3 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/arch/sparc/include/asm/irq_32.h b/arch/sparc/include/asm/irq_32.h
index cbf4801..eced3e3 100644
--- a/arch/sparc/include/asm/irq_32.h
+++ b/arch/sparc/include/asm/irq_32.h
@@ -13,4 +13,7 @@
#define irq_canonicalize(irq) (irq)
extern void __init init_IRQ(void);
+
+#define NO_IRQ 0xffffffff
+
#endif
diff --git a/arch/sparc/include/asm/irq_64.h b/arch/sparc/include/asm/irq_64.h
index 4f09666f..16dcae6d 100644
--- a/arch/sparc/include/asm/irq_64.h
+++ b/arch/sparc/include/asm/irq_64.h
@@ -97,4 +97,6 @@ extern void *softirq_stack[NR_CPUS];
#define __ARCH_HAS_DO_SOFTIRQ
#define ARCH_HAS_NMI_WATCHDOG
+#define NO_IRQ 0xffffffff
+
#endif
diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index ed25834..344feea 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -21,6 +21,9 @@
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_pdt.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
#include <asm/prom.h>
#include <asm/oplib.h>
#include <asm/leon.h>
@@ -118,6 +121,27 @@ int of_find_in_proplist(const char *list, const char *match, int len)
}
EXPORT_SYMBOL(of_find_in_proplist);
+static int match_by_dev_node(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+unsigned int irq_of_parse_and_map(struct device_node *dev, int index)
+{
+ struct platform_device *p;
+ struct device *d;
+
+ d = bus_find_device(&platform_bus_type, NULL, dev,
+ match_by_dev_node);
+ if (!d)
+ return NO_IRQ;
+ p = to_platform_device(d);
+ if (index >= p->archdata.num_irqs)
+ return NO_IRQ;
+ return p->archdata.irqs[index];
+}
+EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
+
/*
* SPARC32 and SPARC64's prom_nextprop() do things differently
* here, despite sharing the same interface. SPARC32 doesn't fill in 'buf',
--
1.7.4.1
--
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