linux-kernel - Re: [PATCH 2/2] gpio / ACPI: add support for GPIO operation regions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CACRpkdb5fqMycTxou50-+oiNOs3vzd+8XfWsPbX8vBJp2Su3aw@mail.gmail.com>
Date:	Fri, 20 Sep 2013 21:21:37 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Alexandre Courbot <acourbot@...dia.com>
Subject: Re: [PATCH 2/2] gpio / ACPI: add support for GPIO operation regions

On Fri, Sep 13, 2013 at 5:14 PM, Mika Westerberg
<mika.westerberg@...ux.intel.com> wrote:

> diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
(...)
> +struct acpi_gpio_chip_data {
> +       /*
> +        * acpi_install_address_space_handler() wants to put the connection
> +        * information at the start of the context structure we pass it, in
> +        * case we are dealing with GPIO operation regions.
> +        */
> +       struct acpi_connection_info ci;
> +       struct gpio_chip *chip;
> +       struct list_head *evt_pins;
> +};

Consider just naming this acpi_gpio_chip, as it is obviously some
generic container that you will keep adding to.

I'm uncertain how things work, it wouldn't add something to have
struct gpio_chip be a true member (not a pointer) so you can
allocate one thing from the drivers, and e.g. use container_of()
to get from the gpio_chip to the acpi_gpio_chip[_data]?

Yours,
Linus Walleij
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/