linux-kernel - Re: [PATCH 1/2] pinctrl: bcm2835: Fix ints for GPIOs 28-31 & 46-53

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Date:   Mon, 14 Nov 2016 16:32:45 +0100
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     linux-gpio@...r.kernel.org, Phil Elwell <phil@...pberrypi.org>,
        Eric Anholt <eric@...olt.net>,
        Stephen Warren <swarren@...dotorg.org>
Subject: Re: [PATCH 1/2] pinctrl: bcm2835: Fix ints for GPIOs 28-31 & 46-53

Hi Linus,

Am 14.11.2016 um 13:23 schrieb Linus Walleij:
> From: Phil Elwell <phil@...pberrypi.org>
>
> Contrary to the documentation, the BCM2835 GPIO controller actually
> has four interrupt lines - one each for the three IRQ groups and one
> common. Confusingly, the GPIO interrupt groups don't correspond
> directly with the GPIO control banks. Instead, GPIOs 0-27 generate IRQ
> GPIO0, 28-45 IRQ GPIO1 and 46-53 IRQ GPIO2.
>
> Awkwardly, the GPIOs for IRQ GPIO1 straddle two 32-entry GPIO banks,
> so split out a function to process the interrupts for a single GPIO
> bank.
>
> Cc: Stefan Wahren <stefan.wahren@...e.com>
> Cc: Eric Anholt <eric@...olt.net>
> Cc: Stephen Warren <swarren@...dotorg.org>
> Signed-off-by: Phil Elwell <phil@...pberrypi.org>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> I want to apply this to cater for my GPIOLIB_IRQCHIP
> refactorings.
> ---
>  drivers/pinctrl/bcm/pinctrl-bcm2835.c | 51 ++++++++++++++++++++++++++---------
>  1 file changed, 39 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
> index b2dd278f18b1..1d8fc104e26b 100644
> --- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
> +++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
>
...
> @@ -1076,6 +1102,7 @@ static struct platform_driver bcm2835_pinctrl_driver = {
>  	.remove = bcm2835_pinctrl_remove,
>  	.driver = {
>  		.name = MODULE_NAME,
> +		.owner = THIS_MODULE,

this is unnecessary. Please remove it.

Thanks for submitting these patches

Stefan

>  		.of_match_table = bcm2835_pinctrl_match,
>  	},
>  };