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Date:      Sat, 02 Feb 2019 17:20:26 +0000
From:      bugzilla-noreply@freebsd.org
To:        usb@FreeBSD.org
Subject:   [Bug 235257] snd_uaudio not getting loaded automatically after migration to devmatch
Message-ID:  <bug-235257-19105-AQG9j1LFXI@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235257-19105@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235257-19105@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235257

--- Comment #28 from Max <maxsteciuk@gmail.com> ---
Hi

devd seems to be the only process getting to sys/kern/subr_bus.c:devread() =
and
it is pretty active there.

>>>grep devread  /var/log/messages |grep -oe 'PID [0-9]*, comm [a-zA-Z0-9]*=
'|sort |uniq
>>>PID 86168, comm devd

Here is chronological sequence of my debug checkpoints:
>>>Feb  2 12:01:07  kernel: ugen0.6: <Dell DELL PROFESSIONAL SOUND BAR AE51=
5> at usbus0
>>>...
>>>Feb  2 12:01:07  kernel: +++ 2 devctl_queue_data_f() data [? at bus=3D0 =
hubaddr=3D3 port=3D2 devaddr=3D6 interface=3D3 ugen=3Dugen0.6 vendor=3D0x41=
3c product=3D0xa506 devclass=3D0x00 devsubclass=3D0x00 devproto=3D0x00 sern=
um=3D"" release=3D0xe001 mode=3Dhost intclass=3D0x03 intsubclass=3D0x00 int=
protocol=3D0x00 on uhub2
>>>...
>>>Feb  2 12:01:08  kernel: +++ 1 devread(): si_name devctl PID 86168, comm=
 devd
>>>Feb  2 12:01:08  kernel: +++ 2 devread(): PID 86168, comm devd
>>>Feb  2 12:01:08  kernel: +++ 1 devread(): si_name devctl PID 86168, comm=
 devd
>>>Feb  2 12:01:08  kernel: +++ 2 devread(): PID 86168, comm devd
>>>...
>>>...
>>>...
>>>Feb  2 12:01:09  kernel: +++ 1 devread(): si_name devctl PID 86168, comm=
 devd
>>>Feb  2 12:01:09  kernel: +++ 2 devread(): PID 86168, comm devd
>>>Feb  2 12:01:09  kernel: +++ 1 devctl_queue_data_f() data [!system=3DIFN=
ET subsystem=3Dem0 type=3DLINK_UP
>>>Feb  2 12:01:09  kernel: ] flags 1, devctl_queue_length 1000
>>>Feb  2 12:01:09  kernel: +++ 2 devctl_queue_data_f() data [!system=3DIFN=
ET subsystem=3Dem0 type=3DLINK_UP
>>>Feb  2 12:01:09  kernel: ] flags 1, devctl_queue_length 1000, devsoftc.q=
ueued 382
>>>Feb  2 12:01:09  kernel: em0: link state changed to UP


Thanks,
Max

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