Re: [PATCH] MFD: ab8500: pass AB8500 IRQ to debugfs code by resource

From: Linus Walleij
Date: Fri Apr 12 2013 - 03:50:11 EST

On Thu, Apr 11, 2013 at 4:33 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Thursday 11 April 2013, Linus Walleij wrote:
>> From: Linus Walleij <linus.walleij@xxxxxxxxxx>
>> The AB8500 debug code which was merged in parallell with the
>> multiplatform work incidentally introduced a new instance using
>> the <mach/irqs.h> header which is now deleted, causing this
>> build regression:
>> drivers/mfd/ab8500-debugfs.c:95:23:
>> fatal error: mach/irqs.h: No such file or directory
>> compilation terminated.
>> make[4]: *** [drivers/mfd/ab8500-debugfs.o] Error 1
>> The code most certainly never worked with device tree either
>> since that does not rely on this kind of hard-coded interrupt
>> numbers.
>> Fix the problem at the root by passing it as a named resource
>> from the ab8500-core driver.
> I think this won't work because the interrupts in ab8500_debug_resources
> are now local numbers relative to the ab8500->domain irq_domain,
> while IRQ_DB8500_AB8500 is an global interrupt number.

Actually, well, this one IRQ (the one I start to pass) is already
domain-mapped to the global IRQ numberspace, so that one will
be correct.

However the debug driver patch, i.e. the entire debugfs driver,
is completely irqdomain-unaware and has been broken for
device tree since forever and broken for non-dt builds since
the IRQ numbers were made local.

I guess I'll just have to cook a second patch to fix this up...

Linus Walleij
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