Re: [PATCH v4 4/4] tty: serial: 8250: add DFL bus driver for Altera 16550.

[Ilpo Järvinen]

On Thu, 20 Oct 2022, matthew.gerlach@xxxxxxxxxxxxxxx wrote:

> From: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx>
> 
> Add a Device Feature List (DFL) bus driver for the Altera
> 16550 implementation of UART.
> 
> Signed-off-by: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx>
> ---

> +	p = dfh_find_param(dfl_dev, DFHv1_PARAM_ID_REG_LAYOUT);
> +	if (!p)
> +		return dev_err_probe(dev, -EINVAL, "missing REG_LAYOUT param\n");
> +
> +	v = *p;
> +	uart->port.regshift = FIELD_GET(DFHv1_PARAM_ID_REG_SHIFT, v);
> +	reg_width = FIELD_GET(DFHv1_PARAM_ID_REG_WIDTH, v);

Just use *p directly for the FIELD_GETs. I suppose you can drop v after 
changing it.

Other than that and what Andy noted, this patch looks good.


-- 
 i.