Blackfin arch: ISP1761 doesn't work for USB flash disk

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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 6 insertions, 1 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index d80e5b1d686e..35b33a44677b 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 73f72abed432..d6cf1059560d 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