https://bugzilla.kernel.org/show_bug.cgi?id=207065 Bug ID: 207065 Summary: C-media USB audio device stops working from 5.2.0-rc3 onwards Product: Drivers Version: 2.5 Kernel Version: >=5.2.0 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: florianmey@xxxxxx Regression: No Created attachment 288159 --> https://bugzilla.kernel.org/attachment.cgi?id=288159&action=edit Output of lsusb -v Hi. I have an external USB audio device (Bus 003 Device 005: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter) / USB hub (Bus 003 Device 006: ID 058f:6254 Alcor Micro Corp. USB Hub). While the USB hub side of it is still working, the audio device fails from kernel version 5.2.0-rc3 onwards. The error is this: speaker-test -c2 -D hw:1,0 speaker-test 1.2.2 Playback device is hw:1,0 Stream parameters are 48000Hz, S16_LE, 2 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 96 to 262144 Period size range from 48 to 131072 Using max buffer size 262144 Periods = 4 Unable to set hw params for playback: Input/output error Setting of hwparams failed: Input/output error While dmesg shows: [ 1287.634587] usb 1-2.4: 1:1: usb_set_interface failed (-110) I bisected it and got to the following commit as the culprit: # first bad commit: [ef513be0a9057cc6baf5d29566aaaefa214ba344] usb: xhci: Add Clear_TT_Buffer Last working one was: good: [4998f1efd1904dd21697aeeead270e3eb97691dd] usb: Add devaddr in struct usb_device Current head gives me the same error messages as the ones above, so the bug is still there. I first added my report to a very similar bug (https://bugzilla.kernel.org/show_bug.cgi?id=203419) but the kernel version at which the problem started for me does not fit the original report there, which is why I am opening this as a new report. -- You are receiving this mail because: You are watching the assignee of the bug.
