[PATCH v5 08/10] spi: expose master transfer size limitation.

[Mark Brown]

On Tue, Dec 01, 2015 at 04:51:06PM -0000, Michal Suchanek wrote:

> +static inline size_t
> +spi_max_transfer_size(struct spi_device *spi)
> +{
> +	struct spi_master *master = spi->master;
> +	if (!master->max_transfer_size)
> +		return 0;
> +	return master->max_transfer_size(spi);
> +}

Can we change this to return SIZE_MAX instead (ie, the maximum value for
a size_t)?  That way callers don't need to worry if there is a limit, if
they want to handle it they can just unconditionally assume that a limit
will be provided.
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