From 13fcfbb6c5bbd7aee7e9980313dc29469357c5cd Mon Sep 17 00:00:00 2001 From: Rui Miguel Silva Date: Fri, 14 Aug 2015 13:58:18 +0100 Subject: [PATCH] greybus: makefile: add needed config options for lights Add a function to check kernel versions and append the necessary options to support LEDS_CLASS, LEDS_CLASS_FLASH and V4L2_FLASH_LED_CLASS depending of the kernel version. Signed-off-by: Rui Miguel Silva Signed-off-by: Greg Kroah-Hartman --- drivers/staging/greybus/Makefile | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/staging/greybus/Makefile b/drivers/staging/greybus/Makefile index 11627035222c..3006edef7e7b 100644 --- a/drivers/staging/greybus/Makefile +++ b/drivers/staging/greybus/Makefile @@ -49,13 +49,26 @@ INSTALL_MOD_PATH ?= /.. PWD := $(shell pwd) # kernel config option that shall be enable -CONFIG_OPTIONS_ENABLE := SYSFS SPI USB SND_SOC MMC +CONFIG_OPTIONS_ENABLE := SYSFS SPI USB SND_SOC MMC LEDS_CLASS # kernel config option that shall be disable CONFIG_OPTIONS_DISABLE := # this only run in kbuild part of the makefile ifneq ($(KERNELRELEASE),) +# This function returns the argument version if current kernel version is minor +# than the passed version, return 1 if equal or the current kernel version if it +# is greater than argument version. +kvers_cmp=$(shell [[ "$(KERNELVERSION)" == "$(1)" ]] && echo 1 || echo -e "$(1)\n$(KERNELVERSION)" | sort -V | tail -1) + +ifneq ($(call kvers_cmp,"3.19.0"),3.19.0) + CONFIG_OPTIONS_ENABLE += LEDS_CLASS_FLASH +endif + +ifneq ($(call kvers_cmp,"4.2.0"),4.2.0) + CONFIG_OPTIONS_ENABLE += V4L2_FLASH_LED_CLASS +endif + $(foreach opt,$(CONFIG_OPTIONS_ENABLE),$(if $(CONFIG_$(opt)),, \ $(error CONFIG_$(opt) is disabled in the kernel configuration and must be enable \ to continue compilation))) -- 2.11.0