On Tue, 29 May 2018, Michael Schmitz wrote: > > > > Since an arch gets to apply limits in the dma ops it implements, why > > would arch code also have to set a limit in the form of default > > platform device masks? Powerpc seems to be the only arch that does > > this. > > One of Christoph's recent patches removed most of arches' dma ops, > replacing them by one generic implementation instead. m68k was one of > the affected arches. I concede his patch series is experimental still > and not in mainline, but may be included at some time.
I found some patches here, http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/generic-dma-noncoherent.2 Looks like m68k_dma_alloc() gets renamed arch_dma_alloc() and the generic ops don't use the dma masks. Maybe I'm looking at the wrong patches? --
