On Fri, Apr 01, 2011 at 01:36:00PM +0200, Michal Nazarewicz wrote: > On Fri, 01 Apr 2011 12:19:59 +0200, Felipe Balbi <balbi@xxxxxx> wrote: > >we shouldn't assume that value because on SuperSpeed, we have > >1024 as wMaxPacketSize. > > The more I look at the code, the more I wonder whether this 511 > constant is a consequence of wMaxPacketSize being 512 or mass > storage using 512-byte blocks when reading/writing data from/to > backing file. My understanding is that the code is trying to align the size of transfers to wMaxPacketSize, see that it also sets short_not_ok flag on the same path. Alan, what do you say ? -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
