Hi! >>>>> "eGK" == ext Greg KH writes: > On Wed, Dec 08, 2010 at 01:12:03PM +0200, yauheni.kaliuta@xxxxxxxxx wrote: > > From: Yauheni Kaliuta <yauheni.kaliuta@xxxxxxxxx> > > Since the host driver is submitted by STE, resubmitting the gadget driver. > > No improvements, mostly cosmetic changes and adoptation to the recent kernel. > Very cool stuff, thanks for resubmitting. > I'll queue it up in a bit. Thanks a lot! Some notes: I used the recently submitted host driver for testing. The gadget works for me with our internal setup, also works on beagleboard with today's Linus' tree. It doesn't work "as is" with 2.6.35 kernel (for example, MeeGo on n900), because there are some problems in musb_gadget with MAXP calculations what breaks notifications. As a workaround it's possible to set NCM_STATUS_BYTECOUNT to 20, then it works there as well. About "NCM advantages". I do not see a way with the current design to make the driver working without extra data copiing, so grouping frames on the linux gadget side doesn't help to impove performance (there is one extra even now, with no grouping). I'm thinking of 2 ways how to imporove the situation: from the network layer and on the usb gadget layer to allow to make requests from a set of buffers (the host controllers go to the direction even in HW), especially when we have FIFO in gadget HW. Do you have any ideas about that? -- WBR, Yauheni Kaliuta -- 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
