Hi On Mon, Jul 22, 2019 at 06:40:20PM +0200, Johannes Stezenbach wrote: > I met failure to resume from suspend to RAM with v5.1.19 > and TP-Link Archer T2UH connected to my PC (Asus P8H77-V). > I tried about a dozen times while trying to figure out the reason, > the issue happened every time. > Eventually I connected a serial console and captured this: > > [ 87.803576][ T4640] mt76x0u 2-1.6:1.0: vendor request req:06 off:ac80 failed:-110 > [ 91.030328][ T4640] mt76x0u 2-1.6:1.0: vendor request req:07 off:b000 failed:-110 > [ 94.256950][ T4640] mt76x0u 2-1.6:1.0: vendor request req:06 off:b000 failed:-110 > [ 97.483579][ T4640] mt76x0u 2-1.6:1.0: vendor request req:06 off:aca0 failed:-110 > (repeats) > [ 107.492106][ C0] Call Trace: > [ 107.495293][ C0] ? __schedule+0x381/0xa30 > [ 107.499706][ C0] schedule+0x36/0x90 > [ 107.503575][ C0] schedule_timeout+0x1e8/0x4c0 > [ 107.508310][ C0] ? collect_expired_timers+0xb0/0xb0 > [ 107.513593][ C0] wait_for_common+0x15f/0x190 > [ 107.518249][ C0] ? wake_up_q+0x80/0x80 > [ 107.522412][ C0] usb_start_wait_urb+0x82/0x160 > [ 107.527222][ C0] ? wait_for_common+0x38/0x190 > [ 107.531961][ C0] usb_control_msg+0xdc/0x140 > [ 107.536542][ C0] __mt76u_vendor_request+0xc4/0x100 [mt76_usb] > [ 107.542687][ C0] mt76u_copy+0x8b/0xb0 [mt76_usb] > [ 107.547721][ C0] mt76x02_mac_shared_key_setup+0xdf/0x130 [mt76x02_lib] <snip> > The whole machine is hanging at this point. without serial console > my only choice was to press the reset button. At least mt76x0u should > bail out with an error and not block the resume completely. > Unplugging the hardware also didn't cause it to bail. I recently sent fix for that https://lore.kernel.org/linux-wireless/1563446290-2813-1-git-send-email-sgruszka@xxxxxxxxxx/raw Stanislaw
