Re: usb: musb: regression since 4.9 on omap4-panda-es (caused by d8e5f0eca1e8)

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* Bin Liu <b-liu@xxxxxx> [170404 05:30]:
> On Tue, Apr 04, 2017 at 10:09:50AM +0300, Peter Ujfalusi wrote:
> > Tony,
> > 
> > since 4.9 (4.8 was fine) I can not boot omap4-panda-es if the musb
> > is compiled in. The kernel will stuck printing:
> > 
> > ** 206 printk messages dropped ** [    8.926727] musb_bus_suspend
> > 2584: trying to suspend as a_idle while active

OK so compiled in. Do you have something connected also when
booting?

> Does it sound a similar issue to
> http://marc.info/?l=linux-usb&m=149036531809506&w=2

Yup.

> > The bisect (log is [1]) points to:
> > d8e5f0eca1e8 usb: musb: Fix hardirq-safe hardirq-unsafe lock order error
> > 
> > and reverting the d8e5f0eca1e8 makes the board to boot up fine
> > (Linux 4.11-rc5 and next-20170331).

OK thanks for bisecting it.

> > any idea on how to fix this w/o reverting the commit?

I'll take a look.

Regards,

Tony

> > [1] https://pastebin.com/Z2HJY229
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