Re: 8k interrupts/sec with USB hub

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On Wed, Nov 15, 2017 at 12:12:16PM +0000, Billy Araujo wrote:
> Hi all,
> 
> I built a kernel/rootfs for altera SoCkit amd uses the default SoCkit
> device tree and I plug when in plug in a USB stick it uses the dwc2
> driver.
> When doing cat /proc/interrupts I get normal amount of interrupts -
> everything seems ok.
> 
> However, when I connect the USB stick to a USB hub and then to the
> same USB port I get a great amount of interrupts approx. 8000 per
> second. Anyone know why this different behaviour?

> I have seen several threads with stating this issue but haven't found
> a clear answer.

This sounds familiar, take a look at:

	https://lkml.kernel.org/r/20171030170802.14489-1-dianders@xxxxxxxxxxxx

Johan
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