From: William Breathitt Gray <vilhelm.gray@gmail.com>
To: Colin King <colin.king@canonical.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
linux-gpio@vger.kernel.org, kernel-janitors@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] gpio: 104-idi-48e: make array register_offset static, makes object smaller
Date: Sun, 6 Oct 2019 11:07:59 -0400 [thread overview]
Message-ID: <20191006150759.GA68457@icarus> (raw)
In-Reply-To: <20191006144256.23733-1-colin.king@canonical.com>
On Sun, Oct 06, 2019 at 03:42:56PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate the array register_offset on the stack but instead make it
> static. Makes the object code smaller by 63 bytes. Also add the int type
> specifier to clean up a checkpatch warning.
>
> Before:
> text data bss dec hex filename
> 9212 5712 1408 16332 3fcc drivers/gpio/gpio-104-idi-48.o
>
> After:
> text data bss dec hex filename
> 9085 5776 1408 16269 3f8d drivers/gpio/gpio-104-idi-48.o
>
> (gcc version 9.2.1, amd64)
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/gpio/gpio-104-idi-48.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpio/gpio-104-idi-48.c b/drivers/gpio/gpio-104-idi-48.c
> index ff53887bdaa8..c95c93ec0bd7 100644
> --- a/drivers/gpio/gpio-104-idi-48.c
> +++ b/drivers/gpio/gpio-104-idi-48.c
> @@ -65,7 +65,7 @@ static int idi_48_gpio_get(struct gpio_chip *chip, unsigned offset)
> {
> struct idi_48_gpio *const idi48gpio = gpiochip_get_data(chip);
> unsigned i;
> - const unsigned register_offset[6] = { 0, 1, 2, 4, 5, 6 };
> + static const unsigned int register_offset[6] = { 0, 1, 2, 4, 5, 6 };
> unsigned base_offset;
> unsigned mask;
>
> --
> 2.20.1
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
next prev parent reply other threads:[~2019-10-06 15:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-06 14:42 [PATCH] gpio: 104-idi-48e: make array register_offset static, makes object smaller Colin King
2019-10-06 15:07 ` William Breathitt Gray [this message]
2019-10-09 16:22 ` Bartosz Golaszewski
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