[PATCH] blackfin: include: asm: pgtable: Define dummy pgprot_writecombine

From: Chen Gang
Date: Fri Apr 03 2015 - 16:36:48 EST

It is copied from asm-generic, the related error with allmodconfig:

CC [M] sound/core/pcm_native.o
sound/core/pcm_native.c: In function 'snd_pcm_lib_default_mmap':
sound/core/pcm_native.c:3387:24: error: implicit declaration of function 'pgprot_writecombine' [-Werror=implicit-function-declaration]
area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
sound/core/pcm_native.c:3387:22: error: incompatible types when assigning to type 'pgprot_t {aka struct <anonymous>}' from type 'int'
area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);

Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
arch/blackfin/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/blackfin/include/asm/pgtable.h b/arch/blackfin/include/asm/pgtable.h
index b88a155..3e730d9 100644
--- a/arch/blackfin/include/asm/pgtable.h
+++ b/arch/blackfin/include/asm/pgtable.h
@@ -36,6 +36,7 @@ typedef pte_t *pte_addr_t;
#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */
#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */
#define pgprot_noncached(prot) (prot)
+#define pgprot_writecombine pgprot_noncached

extern void paging_init(void);

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/