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, 6 deletions

diff --git a/include/asm-m68k/io.h b/include/asm-m68k/io.h
index 47bb9cf107b7..baf4f9b8acfc 100644
--- a/include/asm-m68k/io.h
+++ b/include/asm-m68k/io.h
@@ -384,12 +384,6 @@ static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
         return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
 }
 
-
-/* m68k caches aren't DMA coherent */
-extern void dma_cache_wback_inv(unsigned long start, unsigned long size);
-extern void dma_cache_wback(unsigned long start, unsigned long size);
-extern void dma_cache_inv(unsigned long start, unsigned long size);
-
 static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
 {
         __builtin_memset((void __force *) addr, val, count);