Messages in this thread Patch in this message | | | From | Vitaly Andrianov <> | Subject | [PATCH] ARM: mm: do not use virt_to_idmap() for NOMMU systems | Date | Fri, 17 Jul 2015 20:29:35 -0400 |
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The "ARM: mm: Introduce virt_to_idmap() with an arch hook" defines arch_virt_to_idmap hook in arch/arm/mm/idmap.c. That breaks systems w/o MMU because that file is not built for them.
This patch fixes this bug.
Signed-off-by: Vitaly Andrianov <vitalya@ti.com> --- arch/arm/include/asm/memory.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 6f225ac..114abe3 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -279,6 +279,7 @@ static inline void *phys_to_virt(phys_addr_t x) extern phys_addr_t (*arch_virt_to_idmap)(unsigned long x); +#ifdef CONFIG_MMU /* * These are for systems that have a hardware interconnect supported alias of * physical memory for idmap purposes. Most cases should leave these @@ -293,6 +294,9 @@ static inline phys_addr_t __virt_to_idmap(unsigned long x) } #define virt_to_idmap(x) __virt_to_idmap((unsigned long)(x)) +#else +#define virt_to_idmap(x) __virt_to_phys((unsigned long)(x)) +#endif /* * Virtual <-> DMA view memory address translations -- 1.9.1
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