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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 <dave.martin@linaro.org> Signed-off-by: Kevin Hilman <khilman@ti.com>
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arch/arm/mach-omap2/include/mach
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@ -17,8 +17,12 @@
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* wfi used in low power code. Directly opcode is used instead
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* of instruction to avoid mulit-omap build break
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*/
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#ifdef CONFIG_THUMB2_KERNEL
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#define do_wfi() __asm__ __volatile__ ("wfi" : : : "memory")
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#else
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#define do_wfi() \
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__asm__ __volatile__ (".word 0xe320f003" : : : "memory")
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#endif
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#ifdef CONFIG_CACHE_L2X0
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extern void __iomem *l2cache_base;
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