Re: [patch 5/5] irqchip: armanda: Sanitize set_irq_affinity()

From: Gregory CLEMENT
Date: Tue Mar 18 2014 - 17:04:30 EST

On 18/03/2014 21:55, Thomas Gleixner wrote:
> On Tue, 18 Mar 2014, Gregory CLEMENT wrote:
>> On 07/03/2014 18:17, Thomas Gleixner wrote:
>>> It might be the readback of the routing register. I don't have the
>>> datasheet of this.
>> Sorry for the delay, I was on vacation without the hardware to test it.
>> Indeed it was the readback of the routing register. (Unfortunately the
>> datasheet was not yet publicly available :( ). In your patch by replacing
>> the line:
>> writel(mask, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq));
>> by the following ones:
>> reg = readl(main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq));
>> reg = (reg & (~ARMADA_370_XP_INT_SOURCE_CPU_MASK)) | mask;
>> writel(reg, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq));
>> with
>> Then it worked.
>> About masking with the online CPU in the original code, the purpose
>> was to allow sharing the SoC with an other OS by doing AMP. This feature
>> is part of the Marvell version of the kernel.
>> The idea was to bring this latter in the vanilla kernel, but I am not sure
>> that all the part needed for AMP are acceptable for mainline. So I can add
>> it back later when we will need it.
> Right.
> So are you ok with that patch (including your change) ? If you send me
> tested/acked-by i'll route it for 3.15

With the change I included you can add my

Acked-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Tested-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>



> Thanks,
> tglx

Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
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