On Sun, Sep 25, 2016 at 01:29:58PM -0400, Brian Masney wrote:
> Add three new macros: IIO_DEVICE_ATTR_RO, IIO_DEVICE_ATTR_WO and
> IIO_DEVICE_ATTR_RW to reduce the amount of boiler plate code that
> is needed for creating new attributes. This mimics the *_RO, *_WO,
> and *_RW macros that are found in include/linux/device.h and
> include/linux/sysfs.h.
>
> Signed-off-by: Brian Masney <masn...@onstation.org>
> ---
> include/linux/iio/sysfs.h | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/include/linux/iio/sysfs.h b/include/linux/iio/sysfs.h
> index 9cd8f74..f7c6431 100644
> --- a/include/linux/iio/sysfs.h
> +++ b/include/linux/iio/sysfs.h
> @@ -59,6 +59,19 @@ struct iio_const_attr {
> struct iio_dev_attr iio_dev_attr_##_name \
> = IIO_ATTR(_name, _mode, _show, _store, _addr)
>
> +#define IIO_DEVICE_ATTR_RO(_name, _addr) \
> + struct iio_dev_attr iio_dev_attr_##_name \
> + = IIO_ATTR(_name, S_IRUGO, _name##_show, NULL, _addr)
> +
> +#define IIO_DEVICE_ATTR_WO(_name, _addr) \
> + struct iio_dev_attr iio_dev_attr_##_name \
> + = IIO_ATTR(_name, S_IWUSR, NULL, _name##_store, _addr)
> +
> +#define IIO_DEVICE_ATTR_RW(_name, _addr) \
> + struct iio_dev_attr iio_dev_attr_##_name \
> + = IIO_ATTR(_name, (S_IWUSR | S_IRUGO), _name##_show, _name##_store, \
> + _addr)
> +
> #define IIO_DEVICE_ATTR_NAMED(_vname, _name, _mode, _show, _store, _addr) \
> struct iio_dev_attr iio_dev_attr_##_vname \
> = IIO_ATTR(_name, _mode, _show, _store, _addr)
Why not make IIO_ATTR_RO, and IIO_ATTR_RW and use DEVICE_ATTR_RO and
DEVICE_ATTR_RW in it, making it a bit more obvious that you got the
settings correct?
Ideally you wouldn't have to manually set a S_* value at all here...
thanks,
greg k-h
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