Hi Rob, On Sun, Dec 16, 2018 at 3:22 AM Rob Landley <rob@xxxxxxxxxxx> wrote: > On 12/13/18 12:44 PM, Geert Uytterhoeven wrote: > > When submitting a DMA request fails, the sh-sci driver is supposed to > > fall back to PIO. However, this never really worked due to various > > reasons (sh-sci driver issues and dmaengine framework limitations). > > Is it possible to test this under qemu-system-sh4? (Does that emulate the DMA > controller?) No, the sh-sci emulation in QEMU is very limited, and does not include DMA. My patch series does not affect PIO mode, only errors paths in DMA code. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx 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