linux-kernel - Re: [PATCH v3 6/7] gpio: ep93xx: refactor ep93xx_gpio_add

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]

Date:   Thu, 28 Jan 2021 19:38:24 +0100
From:   Alexander Sverdlin <alexander.sverdlin@...il.com>
To:     Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 6/7] gpio: ep93xx: refactor ep93xx_gpio_add_bank

On Thu, 2021-01-28 at 15:21 +0300, Nikita Shubin wrote:
> - replace plain numbers with girq->num_parents in devm_kcalloc
> - replace plain numbers with girq->num_parents for port F
> - refactor i - 1 to i + 1 to make loop more readable
> - combine getting IRQ's loop and setting handler's into single loop
> 
> Signed-off-by: Nikita Shubin <nikita.shubin@...uefel.me>

Acked-by: Alexander Sverdlin <alexander.sverdlin@...il.com>

> ---
> v2->v3
> - use ->num_parents instead of ARRAY_SIZE()
> ---
>  drivers/gpio/gpio-ep93xx.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
> index d69ec09cd618..df55aa13bd9a 100644
> --- a/drivers/gpio/gpio-ep93xx.c
> +++ b/drivers/gpio/gpio-ep93xx.c
> @@ -384,7 +384,7 @@ static int ep93xx_gpio_add_bank(struct gpio_chip
> *gc,
>  
>                 girq->parent_handler = ep93xx_gpio_ab_irq_handler;
>                 girq->num_parents = 1;
> -               girq->parents = devm_kcalloc(dev, 1,
> +               girq->parents = devm_kcalloc(dev, girq->num_parents,
>                                              sizeof(*girq->parents),
>                                              GFP_KERNEL);
>                 if (!girq->parents)
> @@ -406,15 +406,14 @@ static int ep93xx_gpio_add_bank(struct
> gpio_chip *gc,
>                  */
>                 girq->parent_handler = ep93xx_gpio_f_irq_handler;
>                 girq->num_parents = 8;
> -               girq->parents = devm_kcalloc(dev, 8,
> +               girq->parents = devm_kcalloc(dev, girq->num_parents,
>                                              sizeof(*girq->parents),
>                                              GFP_KERNEL);
>                 if (!girq->parents)
>                         return -ENOMEM;
>                 /* Pick resources 1..8 for these IRQs */
> -               for (i = 1; i <= 8; i++)
> -                       girq->parents[i - 1] = platform_get_irq(pdev,
> i);
> -               for (i = 0; i < 8; i++) {
> +               for (i = 0; i < girq->num_parents; i++) {
> +                       girq->parents[i] = platform_get_irq(pdev, i +
> 1);
>                         gpio_irq = EP93XX_GPIO_F_IRQ_BASE + i;
>                         irq_set_chip_data(gpio_irq, &epg->gc[5]);
>                         irq_set_chip_and_handler(gpio_irq,

-- 
Alexander Sverdlin.