MIPS: Add option to disable software I/O coherency.

Some MIPS controllers have hardware I/O coherency. This patch
detects those and turns off software coherency. A new kernel
command line option also allows the user to manually turn
software coherency on or off.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/arch/mips/mti-sead3/sead3-setup.c b/arch/mips/mti-sead3/sead3-setup.c
index f012fd164cee..14633bc80049 100644
--- a/arch/mips/mti-sead3/sead3-setup.c
+++ b/arch/mips/mti-sead3/sead3-setup.c
@@ -13,9 +13,6 @@
 #include <asm/mips-boards/generic.h>
 #include <asm/prom.h>
 
-int coherentio;         /* 0 => no DMA cache coherency (may be set by user) */
-int hw_coherentio;      /* 0 => no HW DMA cache coherency (reflects real HW) */
-
 const char *get_system_type(void)
 {
         return "MIPS SEAD3";