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MUSB interrupt storm on device removal

DISCUSSION Bin Liu 1 participant 1 message Jan 22, 2019 USB

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Bin Liu

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Hi,

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I have a strange problem with the musb driver in host mode on AM3358 (beaglebone) hardware. If I connect a multi-port serial adapter and

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Is this on beaglebone or beagleboneblack?

We've seen it with Beaglebone Enhanced [1] and BeagleCore [2] based devices. Both are based on the AM3358 and mostly compatible with the Beaglebone Black.

[1] https://elinux.org/SanCloud_BeagleBoneEnhanced
[2] http://beaglecore.com/products/bcm1str.html

Okay, now I see you have a hub on the board. I just reproduced the console lockup after added a hub in my setup. I will find some time to debug this.

FYI, there was a similar issue in a few years ago, which was that the hub routine never got called during the storm then the device disconnect event never got populated from the hub driver. I am wondering if this is the same issue pops up again...

Regards,
-Bin.