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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

  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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