Remove dma_cache_(wback|inv|wback_inv) functions

dma_cache_(wback|inv|wback_inv) were the earliest attempt on a generalized
cache managment API for I/O purposes.  Originally it was basically the raw
MIPS low level cache API exported to the entire world.  The API has
suffered from a lack of documentation, was not very widely used unlike it's
more modern brothers and can easily be replaced by dma_cache_sync.  So
remove it rsp.  turn the surviving bits back into an arch private API, as
discussed on linux-arch.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 17 deletions

diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 0d0589ef8ea..bf14ab4ef4c 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -498,23 +498,6 @@ static inline void name at					\
 #define writeq  writeq
 #endif
 
-#ifdef CONFIG_NOT_COHERENT_CACHE
-
-#define dma_cache_inv(_start,_size) \
-        invalidate_dcache_range(_start, (_start + _size))
-#define dma_cache_wback(_start,_size) \
-        clean_dcache_range(_start, (_start + _size))
-#define dma_cache_wback_inv(_start,_size) \
-        flush_dcache_range(_start, (_start + _size))
-
-#else /* CONFIG_NOT_COHERENT_CACHE */
-
-#define dma_cache_inv(_start,_size)             do { } while (0)
-#define dma_cache_wback(_start,_size)           do { } while (0)
-#define dma_cache_wback_inv(_start,_size)       do { } while (0)
-
-#endif /* !CONFIG_NOT_COHERENT_CACHE */
-
 /*
  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
  * access