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    SubjectRe: [PATCH resend 1/3] nios2: use correct void* return type for page_to_virt()
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    On Tue, Apr 19, 2016 at 12:04 AM, Ard Biesheuvel
    <ard.biesheuvel@linaro.org> wrote:
    >
    > To align with other architectures, the expression produced by expanding
    > the macro page_to_virt() should be of type void*, since it returns a
    > virtual address. Fix that, and also fix up an instance where page_to_virt
    > was expected to return 'unsigned long', and drop another instance that was
    > entirely unused (page_to_bus)
    >
    > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
    > ---
    > arch/nios2/include/asm/io.h | 1 -
    > arch/nios2/include/asm/page.h | 2 +-
    > arch/nios2/include/asm/pgtable.h | 2 +-
    > 3 files changed, 2 insertions(+), 3 deletions(-)
    >
    > diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h
    > index c5a62da22cd2..ce072ba0f8dd 100644
    > --- a/arch/nios2/include/asm/io.h
    > +++ b/arch/nios2/include/asm/io.h
    > @@ -50,7 +50,6 @@ static inline void iounmap(void __iomem *addr)
    >
    > /* Pages to physical address... */
    > #define page_to_phys(page) virt_to_phys(page_to_virt(page))
    > -#define page_to_bus(page) page_to_virt(page)
    >
    > /* Macros used for converting between virtual and physical mappings. */
    > #define phys_to_virt(vaddr) \
    > diff --git a/arch/nios2/include/asm/page.h b/arch/nios2/include/asm/page.h
    > index 4b32d6fd9d98..c1683f51ad0f 100644
    > --- a/arch/nios2/include/asm/page.h
    > +++ b/arch/nios2/include/asm/page.h
    > @@ -84,7 +84,7 @@ extern struct page *mem_map;
    > ((void *)((unsigned long)(x) + PAGE_OFFSET - PHYS_OFFSET))
    >
    > #define page_to_virt(page) \
    > - ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
    > + ((void *)(((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
    >
    > # define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
    > # define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && \
    > diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
    > index a213e8c9aad0..298393c3cb42 100644
    > --- a/arch/nios2/include/asm/pgtable.h
    > +++ b/arch/nios2/include/asm/pgtable.h
    > @@ -209,7 +209,7 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
    > static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
    > pte_t *ptep, pte_t pteval)
    > {
    > - unsigned long paddr = page_to_virt(pte_page(pteval));
    > + unsigned long paddr = (unsigned long)page_to_virt(pte_page(pteval));
    >
    > flush_dcache_range(paddr, paddr + PAGE_SIZE);
    > set_pte(ptep, pteval);
    > --
    Acked-by: Ley Foon Tan <lftan@altera.com>

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