arm smp support patch

[sshtylyov@mvista.com (Sergei Shtylyov)]

Hello.

On 10-11-2010 23:37, Scott Valentine wrote:

>>> On arm multi-core platforms that have a gic, the secondary cores fail
>>> to wake if they are booted in WFI mode, as the gic_dist_init disables
>>> all interrupts including IPI. I've included a simple patch to the
>>> gic_dist_init function that enables interrupts 0-15 on SMP enabled
>>> systems. This patch was made against linux-2.6-HEAD-151f52f.

>>      Your signoff is necessary for the patch to be applied.

>>> diff -uNr a/arch/arm/common/gic.c b/arch/arm/common/gic.c
>>> --- a/arch/arm/common/gic.c     2010-11-05 15:57:04.000000000 -1000
>>> +++ b/arch/arm/common/gic.c     2010-11-09 13:08:33.000000000 -1000
>>> @@ -262,6 +262,13 @@
>>>           for (i = 0; i<   max_irq; i += 32)
>>>                   writel(0xffffffff, base +
>> GIC_DIST_ENABLE_CLEAR + i *
>>> 4 / 32);
>>>
>>> +#ifdef CONFIG_SMP
>>> +       /*
>>> +        * Enable IPI interrupts on SMP systems so we can wake
>>> +secondary
>>> cores

>>     Your patch is line wrapped.

>>> +        */
>>> +       writel(0x0000ffff, base + GIC_DIST_ENABLE_SET); #endif
>>> +
>>>           /*
>>>            * Setup the Linux IRQ subsystem.
>>>            */

>>> Scott Valentine

>> WBR, Sergei

> Sorry, bad mail-client settings. Also, I'm not really a maintainer, but I will signoff as requested.

    You don't need to be a maintainer to sign off on your own patches. :-)

> Below is the non-wrapped patch:

    You didn't provide the patch summary this time.

> Signed-off-by: Scott Valentine<svalentine@concentris-systems.com>

WBR, Sergei