Messages in this thread | | | Date | Tue, 5 Aug 2014 11:14:26 +0200 | From | Sam Ravnborg <> | Subject | Re: [PATCH v3 1/3] asm-generic/io.h: Implement generic {read,write}s*() |
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> > > > So xxx_p is for pause (or something like that). > > This also matches that m68k do some tricks with delay() in the _p variants. > > Thanks for the explanation. > > m68k's isa_delay() uses the same approach as x86's slow_down_io(), > but only for Q40/Q60, which has a "real" ISA bus that accepts legacy > ISA expansion cards (http://www.q40.de/). Based on the nice description from James I have on my todo list to cook up a patch to io.h to document this. Had just not got around to do it yet.
Sam
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