linux-kernel - Re: of/spi: Supply proper "spi:" modalias prefixes.

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Message-Id: <20120522231452.4AB653E0793@localhost>
Date:	Tue, 22 May 2012 17:14:52 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	David Daney <ddaney.cavm@...il.com>,
	Rob Herring <rob.herring@...xeda.com>,
	spi-devel-general@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, David Daney <david.daney@...ium.com>
Subject: Re: of/spi: Supply proper "spi:" modalias prefixes.

On Tue, 22 May 2012 15:47:19 -0700, David Daney <ddaney.cavm@...il.com> wrote:
> From: David Daney <david.daney@...ium.com>
> 
> To get modprobe to automatically load the proper modules, we need to
> prefix things with "spi:".  Partially based on Grant Likely's suggestions.
> 
> Signed-off-by: David Daney <david.daney@...ium.com>

Applied, thanks.

g.

> ---
>  drivers/of/of_spi.c |    6 +++++-
>  drivers/spi/spi.c   |    2 +-
>  2 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/of/of_spi.c b/drivers/of/of_spi.c
> index 6dbc074..3486d2d 100644
> --- a/drivers/of/of_spi.c
> +++ b/drivers/of/of_spi.c
> @@ -25,6 +25,7 @@ void of_register_spi_devices(struct spi_master *master)
>  	struct spi_device *spi;
>  	struct device_node *nc;
>  	const __be32 *prop;
> +	char request_module_modalias[SPI_NAME_SIZE + 4];
>  	int rc;
>  	int len;
>  
> @@ -86,7 +87,10 @@ void of_register_spi_devices(struct spi_master *master)
>  		spi->dev.of_node = nc;
>  
>  		/* Register the new device */
> -		request_module(spi->modalias);
> +		snprintf(request_module_modalias,
> +			 sizeof(request_module_modalias),
> +			 "%s%s", SPI_MODULE_PREFIX, spi->modalias);
> +		request_module(request_module_modalias);
>  		rc = spi_add_device(spi);
>  		if (rc) {
>  			dev_err(&master->dev, "spi_device register error %s\n",
> diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
> index 3d8f662..da8aac7 100644
> --- a/drivers/spi/spi.c
> +++ b/drivers/spi/spi.c
> @@ -51,7 +51,7 @@ modalias_show(struct device *dev, struct device_attribute *a, char *buf)
>  {
>  	const struct spi_device	*spi = to_spi_device(dev);
>  
> -	return sprintf(buf, "%s\n", spi->modalias);
> +	return sprintf(buf, "%s%s\n", SPI_MODULE_PREFIX, spi->modalias);
>  }
>  
>  static struct device_attribute spi_dev_attrs[] = {

-- 
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies, Ltd.
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