Messages in this thread | | | Date | Mon, 1 Feb 1999 14:33:27 +0100 (CET) | From | Geert Uytterhoeven <> | Subject | Re: [linux-fbdev] Re: request_region for MMIO? |
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On 1 Feb 1999, Jes Sorensen wrote: > >>>>> "Geert" == Geert Uytterhoeven <Geert.Uytterhoeven@cs.kuleuven.ac.be> writes: > Geert> On 1 Feb 1999, Jes Sorensen wrote: > >> >>>>> "Geert" == Geert Uytterhoeven > >> <Geert.Uytterhoeven@cs.kuleuven.ac.be> writes: > Geert> Is it OK to use request_region() for claiming memory mapped I/O > Geert> registers? > >> Certainly not. > >> > Geert> Is there any good reason why > > Oh did I get you wrong here, do you mean PCI I/O registers that just > happen to be mem mapped on non x86 architectures or do you actually > mean PCI shared memory type registers?
I mean anything I can map with ioremap(). Before I map it, I have to make sure it's not yet in use by a(nother) driver. For I/O ports, we have request_region() for that purpose.
Greetings,
Geert
-- Geert Uytterhoeven Geert.Uytterhoeven@cs.kuleuven.ac.be Wavelets, Linux/{m68k~Amiga,PPC~CHRP} http://www.cs.kuleuven.ac.be/~geert/ Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium
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