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>

2 files changed, 5 insertions, 5 deletions

diff --git a/arch/sh/drivers/pci/dma-dreamcast.c b/arch/sh/drivers/pci/dma-dreamcast.c
index 230d6ec0d239..888a34050599 100644
--- a/arch/sh/drivers/pci/dma-dreamcast.c
+++ b/arch/sh/drivers/pci/dma-dreamcast.c
@@ -51,7 +51,7 @@ void *dreamcast_consistent_alloc(struct device *dev, size_t size,
         buf = P2SEGADDR(buf);
 
         /* Flush the dcache before we hand off the buffer */
-        dma_cache_wback_inv((void *)buf, size);
+        __flush_purge_region((void *)buf, size);
 
         return (void *)buf;
 }
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 38c82d890ffd..e220c29a3c00 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -34,7 +34,7 @@ void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *handle)
         /*
          * We must flush the cache before we pass it on to the device
          */
-        dma_cache_wback_inv(ret, size);
+        __flush_purge_region(ret, size);
 
         page = virt_to_page(ret);
         free = page + (size >> PAGE_SHIFT);
@@ -68,13 +68,13 @@ void consistent_sync(void *vaddr, size_t size, int direction)
 
         switch (direction) {
         case DMA_FROM_DEVICE:           /* invalidate only */
-                dma_cache_inv(p1addr, size);
+                __flush_invalidate_region(p1addr, size);
                 break;
         case DMA_TO_DEVICE:             /* writeback only */
-                dma_cache_wback(p1addr, size);
+                __flush_wback_region(p1addr, size);
                 break;
         case DMA_BIDIRECTIONAL:         /* writeback and invalidate */
-                dma_cache_wback_inv(p1addr, size);
+                __flush_purge_region(p1addr, size);
                 break;
         default:
                 BUG();