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Date: Tue, 12 Aug 2014 05:18:44 +0800 From: Chen Gang <gang.chen.5i5j@...il.com> To: Arnd Bergmann <arnd@...db.de>, akpm@...ux-foundation.org CC: Geert Uytterhoeven <geert@...ux-m68k.org>, Jean Delvare <jdelvare@...e.de>, linux@....linux.org.uk, catalin.marinas@....com, will.deacon@....com, tony.luck@...el.com, fenghua.yu@...el.com, tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, x86@...nel.org, linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: [PATCH] arch: Kconfig: Let all little endian architectures define CPU_LITTLE_ENDIAN explicitly x86, ia64, and arm(64) are little endian, and also another architectures may be little endian (mips, sh, powerpc, and m32r) which already marked CPU_LITTLE_ENDIAN explicitly. Some drivers (e.g. some of "drivers/isdn/hisax") may only support little endian (CPU_LITTLE_ENDIAN), and some drivers may only support big endian (!CPU_LITTLE_ENDIAN). So export all little endian architectures within kernel wide, so can let Kconfig easier for the modules which only support little endian or only big endian. Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com> --- arch/arm/Kconfig | 3 +++ arch/arm64/Kconfig | 3 +++ arch/ia64/Kconfig | 3 +++ arch/x86/Kconfig | 3 +++ 4 files changed, 12 insertions(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index c49a775..bfc2c65 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -199,6 +199,9 @@ config NEED_DMA_MAP_STATE config ARCH_SUPPORTS_UPROBES def_bool y +config CPU_LITTLE_ENDIAN + def_bool y + config ARCH_HAS_DMA_SET_COHERENT_MASK bool diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 62b4ae1..69b893e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -129,6 +129,9 @@ config KERNEL_MODE_NEON config FIX_EARLYCON_MEM def_bool y +config CPU_LITTLE_ENDIAN + def_bool y + source "init/Kconfig" source "kernel/Kconfig.freezer" diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 64aefb7..fa12d34 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -133,6 +133,9 @@ config AUDIT_ARCH bool default y +config CPU_LITTLE_ENDIAN + def_bool y + menuconfig PARAVIRT_GUEST bool "Paravirtualized guest support" depends on BROKEN diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 541e7cc..a1b3568 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -270,6 +270,9 @@ config ARCH_SUPPORTS_UPROBES config FIX_EARLYCON_MEM def_bool y +config CPU_LITTLE_ENDIAN + def_bool y + source "init/Kconfig" source "kernel/Kconfig.freezer" -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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