Messages in this thread | | | Date | Tue, 28 Jun 2022 09:12:33 +1200 | Subject | Re: [PATCH v2 3/3] arch/*/: remove CONFIG_VIRT_TO_BUS | From | Michael Schmitz <> |
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Hi Geert,
On 27/06/22 20:26, Geert Uytterhoeven wrote: > 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().
Thanks! From what I see, it doesn't have to deal with bounce buffers though?
Cheers,
Michael
> > 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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