[PATCH 03/32] Blackfin arch: ISP1761 doesn't work for USB flash disk

[Bryan Wu <bryan.wu@analog.com>]

From: Aubrey Li <aubrey.li@analog.com>

ZONE_DMA is required for some drivers subsystem, such as USB/SCSI.

Signed-off-by: Aubrey Li <aubrey.li@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
---
 arch/blackfin/Kconfig   |    4 ++++
 arch/blackfin/mm/init.c |    3 ++-
 2 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index d80e5b1..35b33a4 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -25,6 +25,10 @@ config BLACKFIN
 	bool
 	default y
 
+config ZONE_DMA
+	bool
+	default y
+
 config BFIN
 	bool
 	default y
diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c
index 73f72ab..d6cf105 100644
--- a/arch/blackfin/mm/init.c
+++ b/arch/blackfin/mm/init.c
@@ -116,7 +116,8 @@ void paging_init(void)
 	{
 		unsigned long zones_size[MAX_NR_ZONES] = { 0, };
 
-		zones_size[ZONE_NORMAL] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT;
+		zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT;
+		zones_size[ZONE_NORMAL] = 0;
 #ifdef CONFIG_HIGHMEM
 		zones_size[ZONE_HIGHMEM] = 0;
 #endif
-- 
1.5.1.2
-
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