Hi Morimoto-san, Thanks for your patch! On Wed, Jun 13, 2018 at 10:49 AM Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> wrote: > From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> > > Current rcar-dmac is using DMAC error interrupt which will handle all > channel's error. But in this design, error handling itself will be > issue if user want to use virtualization, multi OS, etc. > This patch removes current DMAC error interrupt handling, and handle it > on each channel interrupt handler. Just wondering, what's the usage pattern where this causes a problem? Do you plan to export part of a SYS-DMAC instance to a guest? How to maintain host/guest isolation? > --- a/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt > +++ b/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.txt > @@ -38,6 +38,7 @@ Required Properties: > - interrupt-names: one entry for the error interrupt, named "error", plus one > entry per channel, named "ch%u", where %u is the channel number ranging from > zero to the number of channels minus one. > + # "error" interrupt will be ignored, so far Again, DT describes hardware, not software policy. So please drop all changes to the bindings. With that fixed: Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Thanks! 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 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html