-------- Forwarded Message -------- Subject: [PATCH] c6x: asm: pgtable: Define dummy pgprot_writecombine for !MMU Date: Tue, 03 Mar 2015 07:06:25 +0800 From: Chen Gang <[email protected]> To: [email protected], [email protected] CC: [email protected], Andrew Morton <[email protected]>, [email protected] <[email protected]>, [email protected] <[email protected]> When !MMU, asm-generic will not define default pgprot_writecombine, so c6x needs to define it by itself. The related error: CC [M] fs/pstore/ram_core.o fs/pstore/ram_core.c: In function 'persistent_ram_vmap': fs/pstore/ram_core.c:399:10: error: implicit declaration of function 'pgprot_writecombine' [-Werror=implicit-function-declaration] prot = pgprot_writecombine(PAGE_KERNEL); ^ fs/pstore/ram_core.c:399:8: error: incompatible types when assigning to type 'pgprot_t {aka struct <anonymous>}' from type 'int' prot = pgprot_writecombine(PAGE_KERNEL); ^ Signed-off-by: Chen Gang <[email protected]> --- arch/c6x/include/asm/pgtable.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h index 78d4483..ec4db6d 100644 --- a/arch/c6x/include/asm/pgtable.h +++ b/arch/c6x/include/asm/pgtable.h @@ -67,6 +67,11 @@ extern unsigned long empty_zero_page; */ #define pgtable_cache_init() do { } while (0) +/* + * c6x is !MMU, so define the simpliest implementation + */ +#define pgprot_writecombine pgprot_noncached + #include <asm-generic/pgtable.h> #endif /* _ASM_C6X_PGTABLE_H */ -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
