shm: remove unneeded extern for function

[cascardo/linux.git] / arch / ia64 / include / asm / scatterlist.h

diff --git a/arch/ia64/include/asm/scatterlist.h b/arch/ia64/include/asm/scatterlist.h
index f299a4f..08fd93b 100644 (file)
--- a/arch/ia64/include/asm/scatterlist.h
+++ b/arch/ia64/include/asm/scatterlist.h
@@ -2,15 +2,6 @@
 #define _ASM_IA64_SCATTERLIST_H
 
 #include <asm-generic/scatterlist.h>
-/*
- * It used to be that ISA_DMA_THRESHOLD had something to do with the
- * DMA-limits of ISA-devices.  Nowadays, its only remaining use (apart
- * from the aha1542.c driver, which isn't 64-bit clean anyhow) is to
- * tell the block-layer (via BLK_BOUNCE_ISA) what the max. physical
- * address of a page is that is allocated with GFP_DMA.  On IA-64,
- * that's 4GB - 1.
- */
-#define ISA_DMA_THRESHOLD      0xffffffff
 #define ARCH_HAS_SG_CHAIN
 
 #endif /* _ASM_IA64_SCATTERLIST_H */