From: Arnd Bergmann <arnd@xxxxxxxx> When GENERIC_IRQ_CHIP is disabled, OMAP1 kernels fail to link: arm-linux-gnueabi-ld: arch/arm/mach-omap1/irq.o: in function `omap1_init_irq': irq.c:(.init.text+0x1e8): undefined reference to `irq_alloc_generic_chip' arm-linux-gnueabi-ld: irq.c:(.init.text+0x228): undefined reference to `irq_setup_generic_chip' arm-linux-gnueabi-ld: irq.c:(.init.text+0x2a8): undefined reference to `irq_gc_set_wake' arm-linux-gnueabi-ld: irq.c:(.init.text+0x2b0): undefined reference to `irq_gc_mask_set_bit' arm-linux-gnueabi-ld: irq.c:(.init.text+0x2b4): undefined reference to `irq_gc_mask_clr_bit' This has apparently been the case for many years, but I never caught it in randconfig builds until now, as there are dozens of other drivers that also 'select GENERIC_IRQ_CHIP' and statistically there is almost always one of them enabled. Fixes: 55b447744389 ("ARM: OMAP1: Switch to use generic irqchip in preparation for sparse IRQ") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- arch/arm/mach-omap1/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-omap1/Kconfig b/arch/arm/mach-omap1/Kconfig index a643b71e30a3..08ec6bd84ada 100644 --- a/arch/arm/mach-omap1/Kconfig +++ b/arch/arm/mach-omap1/Kconfig @@ -8,6 +8,7 @@ menuconfig ARCH_OMAP1 select ARCH_OMAP select CLKSRC_MMIO select FORCE_PCI if PCCARD + select GENERIC_IRQ_CHIP select GPIOLIB help Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx) -- 2.39.5