[PATCH 1/1] powerpc/io: enable dma-contiguous API

[Luming Yu]

enable HAVE_DMA_CONTIGUOUS for general use of
CMA on powerpc.

Signed-off-by: Luming Yu <luming...@shingroup.cn>
---
 arch/powerpc/Kconfig               | 1 +
 arch/powerpc/kernel/setup-common.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b968068cc04a..e21f72bcb61f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -231,6 +231,7 @@ config PPC
        select HAVE_C_RECORDMCOUNT
        select HAVE_DEBUG_KMEMLEAK
        select HAVE_DEBUG_STACKOVERFLOW
+       select HAVE_DMA_CONTIGUOUS
        select HAVE_DYNAMIC_FTRACE
        select HAVE_DYNAMIC_FTRACE_WITH_ARGS    if 
ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32
        select HAVE_DYNAMIC_FTRACE_WITH_REGS    if 
ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32
diff --git a/arch/powerpc/kernel/setup-common.c 
b/arch/powerpc/kernel/setup-common.c
index 9b142b9d5187..50d09363352d 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -35,6 +35,7 @@
 #include <linux/of_irq.h>
 #include <linux/hugetlb.h>
 #include <linux/pgtable.h>
+#include <linux/dma-map-ops.h>
 #include <asm/io.h>
 #include <asm/paca.h>
 #include <asm/processor.h>
@@ -975,6 +976,7 @@ void __init setup_arch(char **cmdline_p)
         */
        kvm_cma_reserve();
        gigantic_hugetlb_cma_reserve();
+       dma_contiguous_reserve(0);
 
        early_memtest(min_low_pfn << PAGE_SHIFT, max_low_pfn << PAGE_SHIFT);
 
-- 
2.42.0.windows.2