Hi Lorenzo, > Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx> hat am 9. Februar 2019 um 21:33 geschrieben: > > > > > > Hi Lorenzo, > > > > > Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx> hat am 9. Februar 2019 um 19:46 geschrieben: > > > > > > > > > > > > > > Hi, > > > > > > > > as already reported here [1], that there are probing issues of mt76 using TP-Link Archer T2UH (wifi USB dongle) on Raspberry Pi 3 B+. > > > > > > > > I retested it with recent linux-next 20190208 (aarch64 defconfig + enabling mt76 driver) and got the following output after plugin the wifi dongle: > > > > > > > > [ 29.778524] usb 1-1.3: new high-speed USB device number 6 using dwc2 > > > > [ 31.794581] usb 1-1.3: reset high-speed USB device number 6 using dwc2 > > > > [ 31.919916] mt76x0u 1-1.3:1.0: ASIC revision: 76100002 MAC revision: 76502000 > > > > [ 32.304412] dwc2 3f980000.usb: dwc2_update_urb_state(): trimming xfer length > > > > [ 32.325724] dwc2 3f980000.usb: dwc2_update_urb_state(): trimming xfer length > > > > [ 32.346866] dwc2 3f980000.usb: dwc2_update_urb_state(): trimming xfer length > > > > [ 33.410559] mt76x0u 1-1.3:1.0: firmware upload timed out > > > > [ 33.435458] mt76x0u: probe of 1-1.3:1.0 failed with error -110 > > > > [ 33.454829] usbcore: registered new interface driver mt76x0u > > > > > > > > I took the firmware files from here [2]. > > > > > > > > Btw there is another issue, if i disconnect the wifi dongle during probe i'm getting a endless flood of the following output: > > > > > > > > mt76x0u 1.1.3:1.0: rx urb failed: -71 > > > > > > > > Any chance to narrow down these issues? > > > > > > Hi Stefan, > > > > > > could you please test the following series: > > > https://patchwork.kernel.org/cover/10764453/ > > > > yeah this fixed the probing timeout and the driver will probe successful. AFAIK the dwc2 host mode doesn't support scatter-gather yet. > > > > Hi Stefan, > > is the dongle working properly now? Are you able to connect to your AP? i successful tested STA mode with 2.4 GHz and 5 GHz. > > > > Applying this series I am able to connect to my home AP using an Asus > > > USB-AC51 (mt76x0u) connected to a Raspberry Pi 3 B+. > > > I am running rpi-5.0.y branch of https://github.com/raspberrypi/linux.git > > > > The foundation kernel uses a different USB driver called dwc-otg which make use of FIQ. > > > > Okay, now we only need to find a solution for the "rx urb failed" flood ;-) > > Does it happen just if you remove the dongle during probe? I also see those messages while disconnecting after a successful probe but in this case the messages stopps after a few seconds. In case of a disconnect while probing the flood never ends. It looks like the rx tasklet is triggered forever. Stefan > > Regards, > Lorenzo >
