[PATCH] mips: fix coherency configuration

Fix the MIPS coherency configuration such that we always keep the mapping
state in <asm/pci.h> when we need to on non-coherent platforms.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/mips/defconfig b/arch/mips/defconfig
index 2081583..20f84b1 100644
--- a/arch/mips/defconfig
+++ b/arch/mips/defconfig
@@ -90,6 +90,7 @@
 CONFIG_HAVE_DEC_LOCK=y
 CONFIG_ARC=y
 CONFIG_DMA_NONCOHERENT=y
+CONFIG_DMA_NEED_PCI_MAP_STATE=y
 # CONFIG_CPU_LITTLE_ENDIAN is not set
 CONFIG_IRQ_CPU=y
 CONFIG_SWAP_IO_SPACE=y