Hi Morimoto-san, On Tuesday, 17 October 2017 03:18:49 EEST Kuninori Morimoto wrote: > Hi > > > Thank you for your explanation. > > My 1st patch focused to "transfer completed" count (= TCRB) for all case. > > In any case, "completed" information should be used. > > But in MEM_TO_DEV case, I thought if is OK if data was read from MEM > > (= the data will be send to DEV automatically, I didn't care about > > interruption) But yes, your opinion is correct I think. > > > > I think MEM_TO_MEM should use TCRB. > > I think logic is same as your MEM_TO_DEV explanation ? TCRB is better for MEM_TO_MEM too in my opinion. When reporting residue information we should indicate how much data has been transferred, and that includes both read from source and written to destination. > > Anyway, in all case I can use TCRB in v3 patch, > > and it needs abouve explanation. > > If so, I think v1 is enough... ? > "transfer completed count is important for all case" is no doubt... ? That's correct, but I don't think the explanation was detailed and clear enough. If it was Geert wouldn't have asked for a v2, and you wouldn't have agreed to his request :-) -- Regards, Laurent Pinchart -- 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
