linux-kernel - Re: [PATCH 4/7] gpiolib: implement dev_gpiochip

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Message-Id: <200810222315.26576.david-b@pacbell.net>
Date:	Wed, 22 Oct 2008 23:15:26 -0700
From:	David Brownell <david-b@...bell.net>
To:	avorontsov@...mvista.com
Cc:	benh@...nel.crashing.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, i2c@...sensors.org,
	Jean Delvare <khali@...ux-fr.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH 4/7] gpiolib: implement dev_gpiochip_{add,remove} calls

On Wednesday 22 October 2008, Anton Vorontsov wrote:
> --- a/drivers/gpio/pcf857x.c
> +++ b/drivers/gpio/pcf857x.c
> @@ -187,7 +187,7 @@ static int pcf857x_probe(struct i2c_client *client,
>         struct pcf857x                  *gpio;
>         int                             status;
>  
> -       pdata = client->dev.platform_data;
> +       pdata = pcf857x_get_pdata(client);
>         if (!pdata)
>                 return -ENODEV;
>  

I suppose that can work.  Regardless, some OF-specific code will
need to map device tree state into a generic format that's fully
decoupled from OF.  (And there's something to be said to having
that mapping sit in the same directory as the driver needing it.)


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