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

Ilpo Järvinen
2022-10-21T09:24:58Z

On Thu, 20 Oct 2022, matthew.gerlach@linux.intel.com wrote:

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

> + 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.