Re: [GIT pull] irq updates for 4.13

[Sebastian Reichel]

Hi,

On Tue, Jul 11, 2017 at 08:40:10AM -0700, Linus Torvalds wrote:
> On Tue, Jul 11, 2017 at 7:41 AM, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> >
> > Ah. Now that makes sense.
> >
> > Unpatched the ordering is:
> >
> >           chip_bus_lock(desc);
> >           irq_request_resources(desc);
> 
> I *looked* at that ordering and then went "Naah, that makes no sense".
> 
> But if that's the only issue, how about we just re-order those things
> - we still don't need to move the irq_request_resources() into the
> spinlock, we just move it to below the chip_bus_lock().
> 
> IOW, something like the (COMPLETELY UNTEESTED!) attached patch.

That patch on top of 9967468c0a10 fixes boot on Droid 4.

> This assumes that the chip_bus_lock() thing is still ok for the RT
> case, but it looks like it might be: the only other one I looked at
> (apart from the gpio-omap one) used a mutex.

-- Sebastian

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