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[ARM] 2939/1: Fix compilation error in arch/arm/mm/flush.c
Patch from Catalin Marinas
When CONFIG_CPU_CACHE_VIPT is defined, the flush_pfn_alias() function is
implicitely declared and it later conflicts with its actual definition.
This patch moves the function definition to the beginning of the file.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
authored by Catalin Marinas and committed by Russell King 481467d6 dce79aff
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arch/arm/mm/flush.c
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arch/arm/mm/flush.c
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#ifdef CONFIG_CPU_CACHE_VIPT
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#define ALIAS_FLUSH_START 0xffff4000
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#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
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static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
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{
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unsigned long to = ALIAS_FLUSH_START + (CACHE_COLOUR(vaddr) << PAGE_SHIFT);
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set_pte(TOP_PTE(to), pfn_pte(pfn, PAGE_KERNEL));
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flush_tlb_kernel_page(to);
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asm( "mcrr p15, 0, %1, %0, c14\n"
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" mcrr p15, 0, %1, %0, c5\n"
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:
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: "r" (to), "r" (to + PAGE_SIZE - L1_CACHE_BYTES)
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: "cc");
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}
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void flush_cache_mm(struct mm_struct *mm)
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{
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if (cache_is_vivt()) {
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if (cache_is_vipt_aliasing())
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flush_pfn_alias(pfn, user_addr);
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}
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#define ALIAS_FLUSH_START 0xffff4000
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#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
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static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
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{
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unsigned long to = ALIAS_FLUSH_START + (CACHE_COLOUR(vaddr) << PAGE_SHIFT);
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set_pte(TOP_PTE(to), pfn_pte(pfn, PAGE_KERNEL));
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flush_tlb_kernel_page(to);
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asm( "mcrr p15, 0, %1, %0, c14\n"
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" mcrr p15, 0, %1, %0, c5\n"
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:
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: "r" (to), "r" (to + PAGE_SIZE - L1_CACHE_BYTES)
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: "cc");
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}
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#else
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#define flush_pfn_alias(pfn,vaddr) do { } while (0)