From 85243a762457f7891ae525df39ad44323b3eeea6 Mon Sep 17 00:00:00 2001 From: Dave Martin Date: Fri, 4 Mar 2011 15:33:53 +0000 Subject: [PATCH] ARM: omap4: Provide do_wfi() for Thumb-2 For CONFIG_THUMB2_KERNEL, the existing definition of do_wfi() will insert invalid code into the instruction stream. Any assembler which can assemble Thumb-2 is guaranteed to accept the "wfi" mnemonic, so for the Thumb-2 case, just use the mnemonic. The ARM case is left as-is. Signed-off-by: Dave Martin Signed-off-by: Kevin Hilman --- arch/arm/mach-omap2/include/mach/omap4-common.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/mach-omap2/include/mach/omap4-common.h b/arch/arm/mach-omap2/include/mach/omap4-common.h index 5b0270b28934..de441c05a6a6 100644 --- a/arch/arm/mach-omap2/include/mach/omap4-common.h +++ b/arch/arm/mach-omap2/include/mach/omap4-common.h @@ -17,8 +17,12 @@ * wfi used in low power code. Directly opcode is used instead * of instruction to avoid mulit-omap build break */ +#ifdef CONFIG_THUMB2_KERNEL +#define do_wfi() __asm__ __volatile__ ("wfi" : : : "memory") +#else #define do_wfi() \ __asm__ __volatile__ (".word 0xe320f003" : : : "memory") +#endif #ifdef CONFIG_CACHE_L2X0 extern void __iomem *l2cache_base;