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.5...@gmail.com>
---
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);
--
1.9.3
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