linux-kernel - Re: [PATCH 1/7] tty: serial: samsung: embed s3c24xx_uart

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Date:   Mon, 7 Mar 2022 07:30:21 +0100
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] tty: serial: samsung: embed s3c24xx_uart_info in
 parent structure

On 04. 03. 22, 9:03, Krzysztof Kozlowski wrote:
> Embed "struct s3c24xx_uart_info" directly as a member of "struct
> s3c24xx_serial_drv_data" instead of keeping it as a pointer.  This makes
> the code clearer (obvious ownership of "struct s3c24xx_serial_drv_data")
> and saves one pointer.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>

Reviewed-by: Jiri Slaby <jirislaby@...nel.org>

> ---
>   drivers/tty/serial/samsung_tty.c | 18 +++++++++---------
>   1 file changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
> index d002a4e48ed9..aa5678d03704 100644
> --- a/drivers/tty/serial/samsung_tty.c
> +++ b/drivers/tty/serial/samsung_tty.c
> @@ -85,7 +85,7 @@ struct s3c24xx_uart_info {
>   };
>   
>   struct s3c24xx_serial_drv_data {
> -	struct s3c24xx_uart_info	*info;
> +	struct s3c24xx_uart_info	info;
>   	struct s3c2410_uartcfg		*def_cfg;
>   	unsigned int			fifosize[CONFIG_SERIAL_SAMSUNG_UARTS];
>   };
> @@ -2197,7 +2197,7 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
>   	}
>   
>   	ourport->baudclk = ERR_PTR(-EINVAL);
> -	ourport->info = ourport->drv_data->info;
> +	ourport->info = &ourport->drv_data->info;
>   	ourport->cfg = (dev_get_platdata(&pdev->dev)) ?
>   			dev_get_platdata(&pdev->dev) :
>   			ourport->drv_data->def_cfg;
> @@ -2616,7 +2616,7 @@ static struct console s3c24xx_serial_console = {
>   
>   #ifdef CONFIG_CPU_S3C2410
>   static struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = {
> -	.info = &(struct s3c24xx_uart_info) {
> +	.info = {
>   		.name		= "Samsung S3C2410 UART",
>   		.type		= TYPE_S3C24XX,
>   		.port_type	= PORT_S3C2410,
> @@ -2644,7 +2644,7 @@ static struct s3c24xx_serial_drv_data s3c2410_serial_drv_data = {
>   
>   #ifdef CONFIG_CPU_S3C2412
>   static struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = {
> -	.info = &(struct s3c24xx_uart_info) {
> +	.info = {
>   		.name		= "Samsung S3C2412 UART",
>   		.type		= TYPE_S3C24XX,
>   		.port_type	= PORT_S3C2412,
> @@ -2674,7 +2674,7 @@ static struct s3c24xx_serial_drv_data s3c2412_serial_drv_data = {
>   #if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2416) || \
>   	defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2442)
>   static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = {
> -	.info = &(struct s3c24xx_uart_info) {
> +	.info = {
>   		.name		= "Samsung S3C2440 UART",
>   		.type		= TYPE_S3C24XX,
>   		.port_type	= PORT_S3C2440,
> @@ -2704,7 +2704,7 @@ static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = {
>   
>   #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
>   static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = {
> -	.info = &(struct s3c24xx_uart_info) {
> +	.info = {
>   		.name		= "Samsung S3C6400 UART",
>   		.type		= TYPE_S3C6400,
>   		.port_type	= PORT_S3C6400,
> @@ -2733,7 +2733,7 @@ static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = {
>   
>   #ifdef CONFIG_CPU_S5PV210
>   static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
> -	.info = &(struct s3c24xx_uart_info) {
> +	.info = {
>   		.name		= "Samsung S5PV210 UART",
>   		.type		= TYPE_S3C6400,
>   		.port_type	= PORT_S3C6400,
> @@ -2762,7 +2762,7 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
>   
>   #if defined(CONFIG_ARCH_EXYNOS)
>   #define EXYNOS_COMMON_SERIAL_DRV_DATA()				\
> -	.info = &(struct s3c24xx_uart_info) {			\
> +	.info = {						\
>   		.name		= "Samsung Exynos UART",	\
>   		.type		= TYPE_S3C6400,			\
>   		.port_type	= PORT_S3C6400,			\
> @@ -2811,7 +2811,7 @@ static struct s3c24xx_serial_drv_data exynos850_serial_drv_data = {
>   
>   #ifdef CONFIG_ARCH_APPLE
>   static struct s3c24xx_serial_drv_data s5l_serial_drv_data = {
> -	.info = &(struct s3c24xx_uart_info) {
> +	.info = {
>   		.name		= "Apple S5L UART",
>   		.type		= TYPE_APPLE_S5L,
>   		.port_type	= PORT_8250,


-- 
js
suse labs