Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Mon, 27 Jun 2022 10:26:37 +0200 | Subject | Re: [PATCH v2 3/3] arch/*/: remove CONFIG_VIRT_TO_BUS |
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Hi Michael,
On Sat, Jun 18, 2022 at 3:06 AM Michael Schmitz <schmitzmic@gmail.com> wrote: > Am 18.06.2022 um 00:57 schrieb Arnd Bergmann: > > From: Arnd Bergmann <arnd@arndb.de> > > > > All architecture-independent users of virt_to_bus() and bus_to_virt() > > have been fixed to use the dma mapping interfaces or have been > > removed now. This means the definitions on most architectures, and the > > CONFIG_VIRT_TO_BUS symbol are now obsolete and can be removed. > > > > The only exceptions to this are a few network and scsi drivers for m68k > > Amiga and VME machines and ppc32 Macintosh. These drivers work correctly > > with the old interfaces and are probably not worth changing. > > The Amiga SCSI drivers are all old WD33C93 ones, and replacing > virt_to_bus by virt_to_phys in the dma_setup() function there would > cause no functional change at all.
FTR, the sgiwd93 driver use dma_map_single().
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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