> > Hi, > > > Stanislaw Gruszka <sgruszka@xxxxxxxxxx> hat am 10. Februar 2019 um 10:29 geschrieben: > > > > > > On Sat, Feb 09, 2019 at 07:46:37PM +0100, Lorenzo Bianconi wrote: > > > > 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/ > > > 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 > > > > How the patch series fixed the issue since it was reported before that > > it does not work on 4.19.x which do not use scatter gatter I/O ? > > > > Or it is regression ? 4.19.x driver works with rasperrypi/linux but -next > > does not ? > > sorry for all the confusion (i never tested the foundation kernel). I made my functional tests with arm/multi_v7_defconfig which doesn't need any patches to work. > > Here the current results for next-2019-02-08: > > arm/multi_v7_defconfig w/o any patches -> wlan0 online > arm64/defconfig w/o any patches -> timeout during firmware upload > arm64/defconfig w Lorenzo's series -> driver probe, but dhcp doesn't work (could be a problem in my arm64 rootfs) > arm/multi_v7_defconfig w Stanislaw's patch -> NULL pointer dereference > I am looking at this issue, it is not related to Stanislaw's patch, there is a bug in the error code path. Anyway we will need to avoid SG since dwc_otg controller does not support it Regards, Lorenzo > I will test linux-4.19 and linux-5.0-rc5 to get a better picture ... > > > > > Stanislaw
