On Tue, Jan 22, 2013 at 10:18 PM, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: >> - If poll timer is activated, We use consistent DMA mappings to avoid from >> the frequent cache operation of the timer function. sg->coherency is used >> to check if buffer is coherent. > > Hm. We can begin like this but maybe we should later patch it to > make this the default unless it has performance impacts on our > systems. Good, I really hope to make this the default. We expect it has no impact to system even if no polling use. > Maybe this is a good opportunity to add some kerneldoc above > this struct so as to help platform implementers. It will invariably > be reused by Device Tree binding authors later on... Agree, but, frankly I need help about what I didn't modify. So We will leave this work for the next submit. Thanks Chanho -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
