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remove needless ISA_DMA_THRESHOLD

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Architectures don't need to define ISA_DMA_THRESHOLD anymore.

Signed-off-by: FUJITA Tomonori <[email protected]>
Acked-by: James Bottomley <[email protected]>
Acked-by: David Howells <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
FUJITA Tomonori 2010-05-31 15:59:04 +09:00 • committed by Jens Axboe
commit 7e005f7979
20 changed files with 0 additions and 46 deletions
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9
arch/ia64/include/asm/scatterlist.h
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@ -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 */