Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f9a3e899897201a49965cd9e1bb2570b3bde2b5
Commit:     5f9a3e899897201a49965cd9e1bb2570b3bde2b5
Parent:     5079df993c3ab45af10dc9a45b3b9e712fd56f23
Author:     Aubrey Li <[EMAIL PROTECTED]>
AuthorDate: Mon May 21 18:09:28 2007 +0800
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Mon May 21 09:50:22 2007 -0700

    Blackfin arch: dma_memcpy borken for > 64K
    
    Signed-off-by: Aubrey Li <[EMAIL PROTECTED]>
    Signed-off-by: Bryan Wu <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 arch/blackfin/kernel/bfin_dma_5xx.c |   17 ++++++++++++++++-
 1 files changed, 16 insertions(+), 1 deletions(-)

diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c 
b/arch/blackfin/kernel/bfin_dma_5xx.c
index 1c344ac..0ccb0dc 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -595,7 +595,7 @@ unsigned short get_dma_curr_ycount(unsigned int channel)
 }
 EXPORT_SYMBOL(get_dma_curr_ycount);
 
-void *dma_memcpy(void *dest, const void *src, size_t size)
+void *_dma_memcpy(void *dest, const void *src, size_t size)
 {
        int direction;  /* 1 - address decrease, 0 - address increase */
        int flag_align; /* 1 - address aligned,  0 - address unaligned */
@@ -734,6 +734,21 @@ void *dma_memcpy(void *dest, const void *src, size_t size)
 
        return dest;
 }
+
+void *dma_memcpy(void *dest, const void *src, size_t size)
+{
+       size_t bulk;
+       size_t rest;
+       void * addr;
+
+       bulk = (size >> 16) << 16;
+       rest = size - bulk;
+       if (bulk)
+               _dma_memcpy(dest, src, bulk);
+       addr = _dma_memcpy(dest+bulk, src+bulk, rest);
+       return addr;
+}
+
 EXPORT_SYMBOL(dma_memcpy);
 
 void *safe_dma_memcpy(void *dest, const void *src, size_t size)
-
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