freebsd stable - Apr 2017 - Unsupported USB BT device causes high interrupt load

I have an Interrupt load of 2000 interrupts/s from xhci0.

As the culprit I have identified the following device:

ugen0.6: <vendor 0x8087 product 0x07dc> at usbus0, cfg=255 md=HOST
spd=FULL (12Mbps) pwr=ON (100mA)

The impression I have from googling this is that it's an unsupported
BT device sitting on board of my Intel Wireless AC 7260 card (I also
have an unsupported SD/MMC card reader sitting on the mainboard).

usbconfig -d 0.6 power_off

Ends the interrupt spree.

I'm running FreeBSD 11.0-STABLE #1 r316490 amd64.

-- 
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail? 

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can you capture a usb transfer dump from usbdump ?

I'd like to see if it's because the usb bluetooth code is trying to
attach and failing, or whether it really is just some broken transfer
/ notification loop.


-a


On 6 April 2017 at 03:16, Dominic Fandrey <kami at freebsd.org>
wrote:
> I have an Interrupt load of 2000 interrupts/s from xhci0.
>
> As the culprit I have identified the following device:
>
> ugen0.6: <vendor 0x8087 product 0x07dc> at usbus0, cfg=255 md=HOST
spd=FULL (12Mbps) pwr=ON (100mA)
>
> The impression I have from googling this is that it's an unsupported
> BT device sitting on board of my Intel Wireless AC 7260 card (I also
> have an unsupported SD/MMC card reader sitting on the mainboard).
>
> usbconfig -d 0.6 power_off
>
> Ends the interrupt spree.
>
> I'm running FreeBSD 11.0-STABLE #1 r316490 amd64.
>
> --
> A: Because it fouls the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
> A: Top-posting.
> Q: What is the most annoying thing on usenet and in e-mail?
>

> I have an Interrupt load of 2000 interrupts/s from xhci0.
> 
> As the culprit I have identified the following device:
> 
> ugen0.6: <vendor 0x8087 product 0x07dc> at usbus0, cfg=255 md=HOST
spd=FULL (12Mbps) pwr=ON (100mA)
> 
> ?
The device spamms me with interrupts after every boot and resume
until I send it a power_off command.

For anyone else with a similar problem, I'm using the following devd
rule to mitigate the issue (https://pastebin.com/raw/HmDur3Le):

notify 100 {
	match "system"		"USB";
	match "subsystem"	"INTERFACE";
	match "type"		"ATTACH";
	match "vendor"		"0x8087";
	match "product"		"0x07dc";
	action "usbconfig -d $cdev power_off";
};

-- 
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail? 

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