[PATCH] eeprom/at25: add erase support

[Sascha Hauer]

On Mon, Nov 21, 2011 at 02:31:31PM +0100, Hubert Feurstein wrote:
> Signed-off-by: Hubert Feurstein <h.feurstein at gmail.com>
> ---
>  drivers/eeprom/at25.c |   15 +++++++++++++++
>  1 files changed, 15 insertions(+), 0 deletions(-)

Do we need this? We normally only have erase functions for devices that
need it, namely flashes.

Sascha

> 
> diff --git a/drivers/eeprom/at25.c b/drivers/eeprom/at25.c
> index 8a979d5..39c5846 100644
> --- a/drivers/eeprom/at25.c
> +++ b/drivers/eeprom/at25.c
> @@ -237,10 +237,25 @@ static off_t at25_ee_lseek(struct cdev *cdev, off_t off)
>  	return off;
>  }
>  
> +static int at25_ee_erase(struct cdev *cdev, size_t count, unsigned long offset)
> +{
> +	int result;
> +	void *buf = xzalloc(count);
> +
> +	result = at25_ee_write(cdev, buf, count, offset, 0);
> +	free(buf);
> +
> +	if (result < 0)
> +		return result;
> +
> +	return 0;
> +}
> +
>  static struct file_operations at25_fops = {
>  	.read	= at25_ee_read,
>  	.write	= at25_ee_write,
>  	.lseek	= at25_ee_lseek,
> +	.erase	= at25_ee_erase,
>  };
>  
>  static int at25_probe(struct device_d *dev)
> -- 
> 1.7.4.1
> 
> 
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