[PATCH v4 01/19] irqchip: add basic infrastructure

[robherring2@gmail.com (Rob Herring)]

On 01/03/2013 03:36 PM, Arnd Bergmann wrote:
> On Thursday 03 January 2013, Rob Herring wrote:
>> So, upon the suggestion of Rob Herring and Arnd Bergmann, this commit
>> introduces a small infrastructure that defines a central
>> irqchip_init() function in drivers/irqchip/irqchip.c, which is meant
>> to be called as the ->init_irq() callback of ARM platforms. This
>> function calls of_irq_init() with an array that will progressively
>> contain the compatible strings of each irq controller driver, and also
>> a reference to the initialization functions of such drivers. The
>> drivers/irqchip/irqchip.h header file, currently empty, is added to
>> allow irq controller drivers to expose their initialization function
>> to the main irqchip.c file. Note that the irq controller driver
>> initialization function is responsible for setting the global
>> handle_arch_irq() variable, so that ARM platforms no longer have to
>> define the ->handle_irq field in their DT_MACHINE structure.
> 
> This changeset text looks like it refers to an older version of the
> patch that did not have the section magic yet.
> 
>> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
>> Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
>> Reviewed-by: Rob Herring <rob.herring@calxeda.com>
> 
> I actually liked the old version better because it was more obvious
> to the casual reader how it fits together, but I'm not going to
> stand in the way if other people like it this way.
> 
> Acked-by: Arnd Bergmann <arnd@arndb.de>

The timers are going down the same route, so we should agree on the
direction. I was concerned too that it is a little too much magic, but
it is a bit cleaner and should have fewer merge conflicts.

Rob