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Documentation/DMA-ISA-LPC: fix an incorrect reference 

AFAIK we never had a isa_virt_to_phys, it always was
isa_virt_to_bus.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Christoph Hellwig 2019-02-11 14:43:23 +01:00 committed by Jonathan Corbet
parent bf7fbeeae6
commit 9a065fa8f7
1 changed files with 2 additions and 2 deletions
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4
Documentation/DMA-ISA-LPC.txt
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@ -52,8 +52,8 @@ Address translation
------------------- -------------------
To translate the virtual address to a bus address, use the normal DMA To translate the virtual address to a bus address, use the normal DMA
API. Do _not_ use isa_virt_to_phys() even though it does the same API. Do _not_ use isa_virt_to_bus() even though it does the same
thing. The reason for this is that the function isa_virt_to_phys() thing. The reason for this is that the function isa_virt_to_bus()
will require a Kconfig dependency to ISA, not just ISA_DMA_API which will require a Kconfig dependency to ISA, not just ISA_DMA_API which
is really all you need. Remember that even though the DMA controller is really all you need. Remember that even though the DMA controller
has its origins in ISA it is used elsewhere. has its origins in ISA it is used elsewhere.