linux-kernel - Re: [PATCH] tty: serial: samsung: Improve naming for common macro

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Date:   Tue, 5 Oct 2021 12:56:59 +0300
From:   Sam Protsenko <semen.protsenko@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Linux Samsung SOC <linux-samsung-soc@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tty: serial: samsung: Improve naming for common macro

On Wed, 15 Sept 2021 at 10:28, Krzysztof Kozlowski
<krzysztof.kozlowski@...onical.com> wrote:
>
> On 14/09/2021 16:23, Sam Protsenko wrote:
> > Having "_USI" suffix in EXYNOS_COMMON_SERIAL_DRV_DATA_USI() macro is
> > confusing. Rename it to just EXYNOS_COMMON_SERIAL_DRV_DATA() and provide
> > USI registers availability for all Exynos variants instead.
> >
> > Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
> > ---
> >  drivers/tty/serial/samsung_tty.c | 11 ++++-------
> >  1 file changed, 4 insertions(+), 7 deletions(-)>
> > diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
> > index e2f49863e9c2..542b7e2b99dc 100644
> > --- a/drivers/tty/serial/samsung_tty.c
> > +++ b/drivers/tty/serial/samsung_tty.c
> > @@ -2780,7 +2780,7 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
> >  #endif
> >
> >  #if defined(CONFIG_ARCH_EXYNOS)
> > -#define EXYNOS_COMMON_SERIAL_DRV_DATA_USI(_has_usi)          \
> > +#define EXYNOS_COMMON_SERIAL_DRV_DATA(_has_usi)                      \
> >       .info = &(struct s3c24xx_uart_info) {                   \
> >               .name           = "Samsung Exynos UART",        \
> >               .type           = TYPE_S3C6400,                 \
> > @@ -2804,21 +2804,18 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
> >               .has_fracval    = 1,                            \
> >       }                                                       \
> >
> > -#define EXYNOS_COMMON_SERIAL_DRV_DATA                                \
> > -     EXYNOS_COMMON_SERIAL_DRV_DATA_USI(0)
> > -
> >  static struct s3c24xx_serial_drv_data exynos4210_serial_drv_data = {
> > -     EXYNOS_COMMON_SERIAL_DRV_DATA,
> > +     EXYNOS_COMMON_SERIAL_DRV_DATA(0),
> >       .fifosize = { 256, 64, 16, 16 },
> >  };
> >
> >  static struct s3c24xx_serial_drv_data exynos5433_serial_drv_data = {
> > -     EXYNOS_COMMON_SERIAL_DRV_DATA,
> > +     EXYNOS_COMMON_SERIAL_DRV_DATA(0),
> >       .fifosize = { 64, 256, 16, 256 },
> >  };
> >
> >  static struct s3c24xx_serial_drv_data exynos850_serial_drv_data = {
> > -     EXYNOS_COMMON_SERIAL_DRV_DATA_USI(1),
>
> Makes sense, although I would prefer to have here true or false. More
> obvious. Otherwise "1" looks like counter/number for some property.
>
> The has_usi field in struct could be then also converted to bool.
>

No problem, will send v2 shortly.

>
> Best regards,
> Krzysztof