On Mon, Oct 05, 2015 at 09:29:31AM -0400, j...@ringle.org wrote: > From: Jon Ringle <jrin...@gridpoint.com> > > The only time that it makes sense to call a custom provided reg_update_bits > function, is the register being updated is one that has volatile bits. > Otherwise, the normal read/modify/write cycle (where the read is likely to > be free from the cache) will do just fine. This should keep the reg cache > intact, since volatile registers won't get cached anyway.
Dave, to be clear please do *not* apply this patch at least for the time being - I've not reviewed it or the one from Thursday that you applied this morning.
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