Re: Kernel Oops in cdc_acm

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Am Montag, den 25.05.2020, 21:16 +0200 schrieb Jean Rene Dawin:


Hi,

good, so the primary bug is fixed. I will send it upstream.
May I include your "Reported-by:" to give you the deserved fame?

> The first time the battery is removed and inserted again, everything is
> quite fine. Except that the USB cable has to be plugged out and in for the
> connection to be re-established. But that was needed in previous
> kernels, too.

Yes, I know. It sucks. But I cannot tell that it is the same device
in the kernel. Nor can I reestablish the connection, as it is done with
AT commands. It also means I cannot support reset_resume(). It sucks.
Any ideas?

I can only encourage you to contact the people developing the tool set
you are using.

> # turn on phone
> [  572.928634] ------------[ cut here ]------------
> [  572.928643] WARNING: CPU: 0 PID: 0 at kernel/workqueue.c:1473 __queue_work+0x38a/0x430

This is extremely interesting and unexpected. It is in USB core. I am
looking into this.

	Regards
		Oliver




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