linux-kernel - Re: [PATCH 5/5] bus: hisi_lpc: Use platform_device_register

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Date:   Thu, 1 Sep 2022 20:47:36 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     John Garry <john.garry@...wei.com>
Cc:     "xuwei (O)" <xuwei5@...ilicon.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linuxarm <linuxarm@...wei.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        SoC Team <soc@...nel.org>,
        Yang Yingliang <yangyingliang@...wei.com>
Subject: Re: [PATCH 5/5] bus: hisi_lpc: Use platform_device_register_full()

On Thu, Sep 1, 2022 at 2:37 PM John Garry <john.garry@...wei.com> wrote:
>
> The code to create the child platform device is essentially the same as
> what platform_device_register_full() does, so change over to use
> that same function to reduce duplication.

Thanks!

>  drivers/bus/hisi_lpc.c | 70 ++++++++++++++++++++++--------------------
>  1 file changed, 36 insertions(+), 34 deletions(-)

Looking at the statistics I thought it was a scary "improvement", but...

...

>                 /* ipmi */
>                 {
>                         .hid = "IPI0001",
> -                       .name = "hisi-lpc-ipmi",
> +                       .pdevinfo = (struct platform_device_info []) {
> +                               {
> +                                       .parent = hostdev,
> +                                       .fwnode = acpi_fwnode_handle(child),
> +
> +                                       .name = "hisi-lpc-ipmi",
> +                                       .id = PLATFORM_DEVID_AUTO,
> +
> +                                       .res = res,
> +                                       .num_res = num_res,
> +                               },

...here and in the other cases you have a lot of blank lines, can we
just get rid of them?

> +                       },
>                 },
>                 /* 8250-compatible uart */
>                 {
>                         .hid = "HISI1031",
> -                       .name = "serial8250",
> -                       .pdata = (struct plat_serial8250_port []) {
> +                       .pdevinfo = (struct platform_device_info []) {
>                                 {
> -                                       .iobase = res->start,
> -                                       .uartclk = 1843200,
> -                                       .iotype = UPIO_PORT,
> -                                       .flags = UPF_BOOT_AUTOCONF,
> +                                       .parent = hostdev,
> +                                       .fwnode = acpi_fwnode_handle(child),
> +
> +                                       .name = "serial8250",
> +                                       .id = PLATFORM_DEVID_AUTO,
> +
> +                                       .res = res,
> +                                       .num_res = num_res,
> +
> +                                       .data = (struct plat_serial8250_port []) {
> +                                               {
> +                                                       .iobase = res->start,
> +                                                       .uartclk = 1843200,
> +                                                       .iotype = UPIO_PORT,
> +                                                       .flags = UPF_BOOT_AUTOCONF,
> +                                               },
> +                                               {}
> +                                       },

> +                                       .size_data =  2 *
> +                                               sizeof(struct plat_serial8250_port),

I believe this can be one line.

>                                 },
>                         },

-- 
With Best Regards,
Andy Shevchenko