[Bug 1184984] New: Kernel 5.11.12: unable to open usb port ACM0
http://bugzilla.opensuse.org/show_bug.cgi?id=1184984 Bug ID: 1184984 Summary: Kernel 5.11.12: unable to open usb port ACM0 Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: i586 OS: openSUSE Tumbleweed Status: NEW Severity: Major Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: ferdinando.vivacqua@gmail.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- With the kernel 5.11.12 it is impossible to open serial port for devices such as Arduino. Error message /dev/ttyACM0: unable to connect to serial device could not open port. dmesg output: cdc_acm 2-1:1.0: acm_port_activate - usb_submit_urb(ctrl irq) failed -- You are receiving this mail because: You are the assignee for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1184984 http://bugzilla.opensuse.org/show_bug.cgi?id=1184984#c1 --- Comment #1 from Ferdinando Vivacqua <ferdinando.vivacqua@gmail.com> --- is it related to the following changes (from log change): - USB: cdc-acm: untangle a circular dependency between callback and softint (bsc#1012628). - USB: cdc-acm: downgrade message to debug (bsc#1012628). - USB: cdc-acm: fix double free on probe failure (bsc#1012628). - USB: cdc-acm: fix use-after-free after probe failure -- You are receiving this mail because: You are the assignee for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1184984 http://bugzilla.opensuse.org/show_bug.cgi?id=1184984#c3 --- Comment #3 from Ferdinando Vivacqua <ferdinando.vivacqua@gmail.com> --- (In reply to Takashi Iwai from comment #2)
Do you mean it's a regression from the previous 5.11.x release? If so, it'd be helpful to show the dmesg outputs from both working and broken kernels.
Yes it is a regression, that makes impossibile to connect devices such as Arduino. KERNEL 5.11.15 dmesg: [ 3145.295152] cdc_acm 1-1:1.0: ttyACM0: USB ACM device [ 3170.163809] cdc_acm 1-1:1.0: acm_port_activate - usb_submit_urb(ctrl irq) failed [ 3179.248724] cdc_acm 1-1:1.0: acm_port_activate - usb_submit_urb(ctrl irq) failed [ 4030.840741] cdc_acm 1-1:1.0: acm_port_activate - usb_submit_urb(ctrl irq) failed tail -f /dev/ttyACM0 tail: unable to open '/dev/ttyACM0' input/output error ls /dev/ttyACM0 /dev/ttyACM0 KERNEL 5.11.11 (it works) dmesg: [ 15.139305] cdc_acm 1-1:1.0: ttyACM0: USB ACM device [ 15.143212] usbcore: registered new interface driver cdc_acm [ 15.143222] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters -- You are receiving this mail because: You are the assignee for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1184984 http://bugzilla.opensuse.org/show_bug.cgi?id=1184984#c4 Takashi Iwai <tiwai@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|kernel-bugs@opensuse.org |oneukum@suse.com Flags|needinfo?(ferdinando.vivacq | |ua@gmail.com) | --- Comment #4 from Takashi Iwai <tiwai@suse.com> --- OK, thanks. Then it might be from some recent cdc-acm changes by Oliver. Tossed to the patch author. -- You are receiving this mail because: You are the assignee for the bug.
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