abb4970ac3
The isa_dma_bridge_buggy symbol is only used for x86_32, and only x86_32 platforms or quirks ever set it. Add a new linux/isa-dma.h header that #defines isa_dma_bridge_buggy to 0 except on x86_32, where we keep it as a variable, and remove all the arch- specific definitions. [bhelgaas: commit log] Suggested-by: Arnd Bergmann <arnd@arndb.de> Suggested-by: Christoph Hellwig <hch@infradead.org> Link: https://lore.kernel.org/r/20220722214944.831438-3-shorne@gmail.com Signed-off-by: Stafford Horne <shorne@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
15 lines
358 B
C
15 lines
358 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_S390_DMA_H
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#define _ASM_S390_DMA_H
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#include <asm/io.h>
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/*
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* MAX_DMA_ADDRESS is ambiguous because on s390 its completely unrelated
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* to DMA. It _is_ used for the s390 memory zone split at 2GB caused
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* by the 31 bit heritage.
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*/
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#define MAX_DMA_ADDRESS 0x80000000
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#endif /* _ASM_S390_DMA_H */
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