The commit a2be01b (ARM: only include mach/irqs.h for !SPARSE_IRQ) makes mach/irqs.h only be included for !SPARSE_IRQ build. There are a nubmer of platforms have FIQ_START defined in mach/irqs.h. arch/arm/mach-at91/include/mach/irqs.h:#define FIQ_START AT91_ID_FIQ arch/arm/mach-rpc/include/mach/irqs.h:#define FIQ_START 64 arch/arm/mach-s3c24xx/include/mach/irqs.h:#define FIQ_START IRQ_EINT0 arch/arm/plat-mxc/include/mach/irqs.h:#define FIQ_START 0 arch/arm/plat-omap/include/plat/irqs.h:#define FIQ_START 1024 If SPARSE_IRQ is enabled for any of these platforms, the following compile error will be seen. arch/arm/kernel/fiq.c: In function ‘enable_fiq’: arch/arm/kernel/fiq.c:127:19: error: ‘FIQ_START’ undeclared (first use in this function) arch/arm/kernel/fiq.c:127:19: note: each undeclared identifier is reported only once for each function it appears in arch/arm/kernel/fiq.c: In function ‘disable_fiq’: arch/arm/kernel/fiq.c:132:20: error: ‘FIQ_START’ undeclared (first use in this function) So before we can remove the reference to FIQ_START in fiq.c, we need a way out. The patch adds a mach/fiq.h inclusion for SPARSE_IRQ build in asm/irq.h, so that platform can have a chance to provide FIQ_START. Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx> --- arch/arm/include/asm/irq.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h index 35c21c3..3fa390d 100644 --- a/arch/arm/include/asm/irq.h +++ b/arch/arm/include/asm/irq.h @@ -7,6 +7,7 @@ #include <mach/irqs.h> #else #define NR_IRQS NR_IRQS_LEGACY +#include <mach/fiq.h> #endif #ifndef irq_canonicalize -- 1.7.5.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-arm-kernel