m68k: remove AP1000 code

[pandora-kernel.git] / include / asm-avr32 / cache.h

diff --git a/include/asm-avr32/cache.h b/include/asm-avr32/cache.h
index dabb955..d3cf35a 100644 (file)
--- a/include/asm-avr32/cache.h
+++ b/include/asm-avr32/cache.h
@@ -4,6 +4,15 @@
 #define L1_CACHE_SHIFT 5
 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
 
+/*
+ * Memory returned by kmalloc() may be used for DMA, so we must make
+ * sure that all such allocations are cache aligned. Otherwise,
+ * unrelated code may cause parts of the buffer to be read into the
+ * cache before the transfer is done, causing old data to be seen by
+ * the CPU.
+ */
+#define ARCH_KMALLOC_MINALIGN  L1_CACHE_BYTES
+
 #ifndef __ASSEMBLER__
 struct cache_info {
        unsigned int ways;