Re: [PATCH V9 1/2] ACPI, PCI, irq: remove interrupt count restriction
From: Christopher Covington
Date: Wed Dec 09 2015 - 12:14:32 EST
Hi Sinan,
On 12/09/2015 12:09 PM, Sinan Kaya wrote:
> On 12/9/2015 11:59 AM, Andy Shevchenko wrote:
>>> + if (trigger != ACPI_MADT_TRIGGER_LEVEL ||
>>>> + polarity != ACPI_MADT_POLARITY_ACTIVE_LOW)
>>>> + penalty = PIRQ_PENALTY_ISA_ALWAYS;
>>>> + else
>>>> + penalty = PIRQ_PENALTY_PCI_USING;
>>>> +
>>>> + acpi_irq_add_penalty(irq, penalty);
>> Why not to change in place? I think a common sense rule is not to
>> change something existing if it doesn't add any significant value.
>>
> Sorry, I didn't understand what you mean. Are you asking why we are
> changing lines like above?
>
> If yes, acpi_irq_penalty used to be an array of 256 entries. Now,
> acpi_irq_penalty doesn't exist anymore as it was replaced with a linklist.
>
>> - acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
>> + acpi_irq_add_penalty(irq, PIRQ_PENALTY_PCI_USING);
I think Andy was suggesting that you make the change without introducing
the penalty variable.
Christopher Covington
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