[PATCH for 3.9-rc] arm: mvebu: Use local interrupt only for the timer 0

[thomas.petazzoni@free-electrons.com (Thomas Petazzoni)]

Hello,

On Wed, 20 Mar 2013 16:09:35 +0100, Gregory CLEMENT wrote:
> The commit 3a6f08a37 "arm: mvebu: Add support for local interrupt",
> managed the 28th first interrupts as local interrupt to match the
> hardware specification. Among these interrupts there are the Gigabits
> Ethernet ones used by the mvneta driver. Unfortunately the state of
> the percpu_irq API prevents the driver to use it.
> 
> Indeed the interrupts have to be freed when the .stop() function is
> called. As the free_percpu_irq() function don't disable the interrupt
> line, we have to do it on each CPU before calling this. The function
> disable_percpu_irq() only disable the percpu on the current CPU and
> there is no function which allows to disable a percpu irq on a given
> CPU. Waiting for the extension of the percpu_irq API, this fix allows
> to use again the mvneta driver.
> 
> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
 (on Armada XP GP board)

Thanks!

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com