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| author |   Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2016-03-15 14:52:55 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-15 16:55:16 -0700 |
| commit | e928f35061a6f3ead993b230b01d9ca6b4f495ca (patch) | |
| tree | df0aae7a1248739e91d90bfdb956abeef2349859 /arch | |
| parent | m32r: mm: fix build warning (diff) | |
| download | linux-dev-e928f35061a6f3ead993b230b01d9ca6b4f495ca.tar.xz linux-dev-e928f35061a6f3ead993b230b01d9ca6b4f495ca.zip | |
blackfin: define dummy pgprot_writecombine for !MMU
blackfin allmodconfig build fails with the error:
../sound/core/pcm_native.c: In function 'snd_pcm_lib_default_mmap':
../sound/core/pcm_native.c:3386:24: 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:3386:22: 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);
^
When !MMU, asm-generic will not define default pgprot_writecombine, so
blackfin needs to define it by itself.
The patch idea is from commit 65b9ab888cd7 ("arch/c6x/include/asm/pgtable.h:
define dummy pgprot_writecombine for !MMU")
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Cc: Steven Miao <realmz6@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/blackfin/include/asm/pgtable.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/pgtable.h b/arch/blackfin/include/asm/pgtable.h index b88a1558b0b9..c1ee3d6533fb 100644 --- a/arch/blackfin/include/asm/pgtable.h +++ b/arch/blackfin/include/asm/pgtable.h @@ -97,6 +97,8 @@ extern unsigned long get_fb_unmapped_area(struct file *filp, unsigned long, unsigned long); #define HAVE_ARCH_FB_UNMAPPED_AREA +#define pgprot_writecombine pgprot_noncached + #include <asm-generic/pgtable.h> #endif /* _BLACKFIN_PGTABLE_H */ |