From: khali@linux-fr.org (Jean Delvare)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] i2c: change the id to let the i2c-gpio work
Date: Fri, 12 Oct 2012 11:57:07 +0200 [thread overview]
Message-ID: <20121012115707.76cc7511@endymion.delvare> (raw)
In-Reply-To: <1350034971-1050-1-git-send-email-voice.shen@atmel.com>
On Fri, 12 Oct 2012 17:42:51 +0800, Bo Shen wrote:
> The i2c-gpio driver will turn the platform device ID to busnum.
> When using platfrom device ID as -1, it means dynamically assigned
> the busnum. When writing code, we need to make sure the busnum,
> and call i2c_register_board_info(int busnum, ...) to register device
> if using -1, we do not know the value of busnum.
>
> In order to solve this issue, set the platform device ID as a fix number
> Here using 0 to match the busnum used in i2c_regsiter_board_info().
>
> Signed-off-by: Bo Shen <voice.shen@atmel.com>
> ---
> Change since v1
> Make the commit message more clear
> ---
> arch/arm/mach-at91/at91sam9260_devices.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
> index 0f24cfb..805ef95 100644
> --- a/arch/arm/mach-at91/at91sam9260_devices.c
> +++ b/arch/arm/mach-at91/at91sam9260_devices.c
> @@ -389,7 +389,7 @@ static struct i2c_gpio_platform_data pdata = {
>
> static struct platform_device at91sam9260_twi_device = {
> .name = "i2c-gpio",
> - .id = -1,
> + .id = 0,
> .dev.platform_data = &pdata,
> };
>
Acked-by: Jean Delvare <khali@linux-fr.org>
--
Jean Delvare
next prev parent reply other threads:[~2012-10-12 9:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-12 9:42 [PATCH v2] i2c: change the id to let the i2c-gpio work Bo Shen
2012-10-12 9:57 ` Jean Delvare [this message]
2012-10-12 17:42 ` Joachim Eastwood
2012-10-15 2:09 ` Bo Shen
2012-10-15 6:42 ` ludovic.desroches
2012-10-15 8:12 ` Nicolas Ferre
2012-10-15 8:26 ` Bo Shen
2012-10-15 8:30 ` Nicolas Ferre
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