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

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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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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
API. Do _not_ use isa_virt_to_phys() even though it does the same
thing. The reason for this is that the function isa_virt_to_phys()
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_bus()
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
has its origins in ISA it is used elsewhere.