ARM: 6138/1: Add support for 10 hardirq bits

This patch adds support for 10 hardirq bits to
the ARM architecture. Needed by the SH-Mobile
ARM processor sh7372 that has more than 512 IRQs.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h
index 182310b..6d7485a 100644 (file)
--- a/arch/arm/include/asm/hardirq.h
+++ b/arch/arm/include/asm/hardirq.h
@@ -12,7 +12,9 @@ typedef struct {
 
 #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
 
-#if NR_IRQS > 256
+#if NR_IRQS > 512
+#define HARDIRQ_BITS   10
+#elif NR_IRQS > 256
 #define HARDIRQ_BITS   9
 #else
 #define HARDIRQ_BITS   8