On Sun, Nov 04, 2012 at 02:42:32PM -0500, Ashok Rao wrote: > New small and portable routers from TP-LINK (TL-MR3020 and TL-MR3040) > incorporate this Atheros chipset. > On Linux 3.3.8 (and earlier kernels like 3.2.5) we are finding > data transfer issues with USB 1.1 devices. > > The device (a Samsung BlackJack phone working as a 3G modem) can pass > data to the Internet initially but as > pages are opened these Xact errors show up and the USB port does not > pass any data after that. > Since the stock TP-LINK firmware (Linux 2.6.31) on these devices is > being used with 3G modems world wide -presumably this problem does not > appear with 2.0 devices - though I haven't verified it myself. > Also if a USB 2.0 passive hub is used in the middle - the problem goes > away - I guess because the chipset will be doing USB 2.0 and the > hub will be doing the translation to USB 1.1. - leading me to believe > that it is an issue with USB 1.1 data transfers with this chipset. What driver is controlling the ohci controller in this chipset? Does this hardware work properly with a "stock" kernel.org release of 2.6.31? Or does that release require some patches (like the controller driver?) Figuring out where we broke something would be a good thing to do. thanks, greg k-h -- 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
