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Subject[PATCH] asm-generic: Raise default NR_IRQS when using sparse IRQs
Rather than have each platform using sparse IRQs pick a suitably large
NR_IRQS for use with sparse IRQs make the default high when they are
enabled. We pick 64k as there is still a bitmap of IRQs that is
allocated statically, and as we all know 64k should be enough for

Signed-off-by: Mark Brown <>
include/asm-generic/irq.h | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/include/asm-generic/irq.h b/include/asm-generic/irq.h
index b90ec0b..0d95650 100644
--- a/include/asm-generic/irq.h
+++ b/include/asm-generic/irq.h
@@ -4,11 +4,15 @@
* NR_IRQS is the upper bound of how many interrupts can be handled
* in the platform. It is used to size the static irq_map array,
- * so don't make it too big.
+ * so don't make it too big unless we're using sparse IRQs.
#ifndef NR_IRQS
+#define NR_IRQS 0xffff
#define NR_IRQS 64

static inline int irq_canonicalize(int irq)

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