Sudip Mukherjee e928f35061 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 65b9ab888c ("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>		2016-03-15 16:55:16 -07:00
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