Messages in this thread | | | Date | Thu, 17 Apr 2014 16:47:15 +0100 | From | Will Deacon <> | Subject | Re: [PATCH 00/18] Cross-architecture definitions of relaxed MMIO accessors |
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Hi Sam,
On Thu, Apr 17, 2014 at 04:36:38PM +0100, Sam Ravnborg wrote: > On Thu, Apr 17, 2014 at 02:44:03PM +0100, Will Deacon wrote: > > Hello, > > > > This RFC series attempts to define a portable (i.e. cross-architecture) > > definition of the {readX,writeX}_relaxed MMIO accessor functions. These > > functions are already in widespread use amongst drivers (mainly those supporting > > devices embedded in ARM SoCs), but lack any well-defined semantics and, > > subsequently, any portable definitions to allow these drivers to be compiled for > > other architectures. > > Could this be made in such a way that only architectures that need > to provide their own versions actually have to add them? > > The current patch-set adds the same dummy defines all over, > and will put this burden also on new architectures.
It shouldn't be a burden for new architectures, as they will use asm-generic/io.h and get the definitions from there.
Will
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