linux-kernel - Re: [PATCH] gpio: thunderx: remove unused .map() hook from irq_domain

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Message-ID: <CAK7LNAQMPv3ovFYjPEiVMpzfX-sxpd_DyqtFwaXUO4pbyVzx6Q@mail.gmail.com>
Date:   Fri, 15 Sep 2017 10:48:44 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     David Daney <ddaney@...iumnetworks.com>
Cc:     linux-gpio@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        David Daney <david.daney@...ium.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: thunderx: remove unused .map() hook from irq_domain_ops

Hi David,

2017-09-15 1:59 GMT+09:00 David Daney <ddaney@...iumnetworks.com>:
> On 09/13/2017 07:37 PM, Masahiro Yamada wrote:
>>
>> This driver implements .alloc() hook, so .map() is not used.
>>
>
> Have you tested this?


No.  I do not have access to this hardware.

It is just, in my understanding,
.alloc() and .map() are exclusive.



> I will have to test this on a real system next week before I can really
> comment on it.
>
> David.
>
>
>
>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
>> ---
>>
>>   drivers/gpio/gpio-thunderx.c | 13 -------------
>>   1 file changed, 13 deletions(-)
>>
>> diff --git a/drivers/gpio/gpio-thunderx.c b/drivers/gpio/gpio-thunderx.c
>> index 57efb25..b5adb79 100644
>> --- a/drivers/gpio/gpio-thunderx.c
>> +++ b/drivers/gpio/gpio-thunderx.c
>> @@ -417,18 +417,6 @@ static struct irq_chip thunderx_gpio_irq_chip = {
>>         .flags                  = IRQCHIP_SET_TYPE_MASKED
>>   };
>>   -static int thunderx_gpio_irq_map(struct irq_domain *d, unsigned int
>> irq,
>> -                                irq_hw_number_t hwirq)
>> -{
>> -       struct thunderx_gpio *txgpio = d->host_data;
>> -
>> -       if (hwirq >= txgpio->chip.ngpio)
>> -               return -EINVAL;
>> -       if (!thunderx_gpio_is_gpio_nowarn(txgpio, hwirq))
>> -               return -EPERM;
>> -       return 0;
>> -}
>> -
>>   static int thunderx_gpio_irq_translate(struct irq_domain *d,
>>                                        struct irq_fwspec *fwspec,
>>                                        irq_hw_number_t *hwirq,
>> @@ -455,7 +443,6 @@ static int thunderx_gpio_irq_alloc(struct irq_domain
>> *d, unsigned int virq,
>>   }
>>     static const struct irq_domain_ops thunderx_gpio_irqd_ops = {
>> -       .map            = thunderx_gpio_irq_map,
>>         .alloc          = thunderx_gpio_irq_alloc,
>>         .translate      = thunderx_gpio_irq_translate
>>   };
>>
> --
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-- 
Best Regards
Masahiro Yamada