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Date: Tue, 25 Feb 2014 21:09:34 +0000
Message-ID: <CAEbDrgmwch94crHAcrbJDj9MxaiBNaYeLH2U9NtS0tuJKmdDDw@mail.gmail.com>
From: Gregory Dymarek <gregd72002@gmail.com>
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Subject: Re: [Xenomai] RaspberryPi kernel 3.8 issue
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To: xenomai@xenomai.org

So the frame freeze I got on my version is on line 145 in here:
https://github.com/raspberrypi/linux/blob/rpi-3.8.y/kernel/irq/handle.c

The dwc_otg_hcd_handle_intr is here:
https://github.com/raspberrypi/linux/blob/rpi-3.8.y/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c


Is the line 523 the problem?
    local_fiq_enable();



On 25 February 2014 20:50, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> On 02/25/2014 09:43 PM, Gregory Dymarek wrote:
> > Here we go: http://pastebin.com/aDskYjnU
> >
> > so line 47 is the call handle_irq_event_percpu
> > looking up of it there is one call to ipipe_unstall_root
> >
> > I guess some more domain knowledge is needed in here than mine...
> >
> > What does this tell us?
>
> This tells us that dwc_otg_hcd_handle_intr is the function which
> re-enables interrupt around dwc_otg_hcd_handle_intr+0x134
>
> Some time before a call to DWC_READ_REG32
>
> Could you make the corresponding code available somewhere?
>
> --
>                                                                 Gilles.
>