[RFT PATCH v3 10/10] iio: Don't silently expect attribute types

[Claudiu.Beznea at microchip.com]

On 03.10.2022 11:13, Matti Vaittinen wrote:
> The iio_triggered_buffer_setup_ext() and the
> devm_iio_kfifo_buffer_setup_ext() were changed by
> commit 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
> to silently expect that all attributes given in buffer_attrs array are
> device-attributes. This expectation was not forced by the API - and some
> drivers did register attributes created by IIO_CONST_ATTR().
> 
> When using IIO_CONST_ATTRs the added attribute "wrapping" does not copy
> the pointer to stored string constant and when the sysfs file is read the
> kernel will access to invalid location.
> 
> Change the function signatures to expect an array of iio_dev_attrs to
> avoid similar errors in the future.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount at gmail.com>

Tested-by: Claudiu Beznea <claudiu.beznea at microchip.com>

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