On Tue, Apr 27, 2021 at 09:10:48AM +0200, Johan Hovold wrote:
> On Mon, Apr 26, 2021 at 09:55:06PM +0200, Niccolò Belli wrote:
> > My Aeon Labs ZWave USB stick doesn't work anymore since 5.11.12-arch1-1:
> > [ 193.677337] usb 2-2: new full-speed USB device number 5 using xhci_hcd
> > [ 193.818112] usb 2-2: New USB device found, idVendor=0658,
> > idProduct=0200, bcdDevice= 0.00
> > [ 193.818117] usb 2-2: New USB device strings: Mfr=0, Product=0,
> > SerialNumber=0
> > [ 194.372999] cdc_acm 2-2:1.0: ttyACM0: USB ACM device
> > [ 194.373197] usbcore: registered new interface driver cdc_acm
> > [ 194.373199] cdc_acm: USB Abstract Control Model driver for USB modems
> > and ISDN adapters
> > [ 200.173616] cdc_acm 2-2:1.0: acm_port_activate - usb_submit_urb(ctrl
> > irq) failed
> >
> > It works fine on 5.11.11-arch1-1 and on a Fedora 34 Live USB with kernel
> > 5.11.16.
> > Arch's 5.11.16 doesn't work and latest Arch's linux-lts doesn't work
> > either.
>
> I'm afraid this is a known regression due to a buggy stable backport.
> The fix is now in Linus's tree:
>
> a8b3b519618f ("USB: CDC-ACM: fix poison/unpoison imbalance")
>
> and should be backported very soon.
Due to how much this is hitting people, I'm going to go throw that into
this next round of releases to get it out to the world quicker.
thanks,
greg k-h
