linux-kernel - Re: [PATCH 1/2] serial: samsung: honor fifosize from dts at first

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Message-ID: <bd253c6d-999c-4ba6-a80d-c7e077d1261a@linaro.org>
Date: Mon, 5 Feb 2024 08:40:24 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Tamseel Shams <m.shams@...sung.com>, alim.akhtar@...sung.com,
 linux-fsd@...la.com, robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
 conor+dt@...nel.org, gregkh@...uxfoundation.org, jirislaby@...nel.org
Cc: linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-serial@...r.kernel.org
Subject: Re: [PATCH 1/2] serial: samsung: honor fifosize from dts at first

On 02/02/2024 22:24, Tamseel Shams wrote:
> Currently for platforms which passes UART fifosize from DT gets
> override by local driver structure "s3c24xx_serial_drv_data",
> which is not indentded. Change the code to honor fifosize from
> device tree at first.
> 
> Signed-off-by: Tamseel Shams <m.shams@...sung.com>
> ---
>  drivers/tty/serial/samsung_tty.c | 14 ++++++++------
>  1 file changed, 8 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
> index 71d17d804fda..e4c4c9f4f9b0 100644
> --- a/drivers/tty/serial/samsung_tty.c
> +++ b/drivers/tty/serial/samsung_tty.c
> @@ -1990,8 +1990,7 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
>  	}
>  
>  	if (np) {
> -		of_property_read_u32(np,
> -			"samsung,uart-fifosize", &ourport->port.fifosize);
> +		ret = of_property_read_u32(np, "samsung,uart-fifosize", &ourport->port.fifosize);
>  
>  		if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {
>  			switch (prop) {
> @@ -2009,10 +2008,13 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
>  		}
>  	}
>  
> -	if (ourport->drv_data->fifosize[index])
> -		ourport->port.fifosize = ourport->drv_data->fifosize[index];
> -	else if (ourport->info->fifosize)
> -		ourport->port.fifosize = ourport->info->fifosize;

I think ret is not initialized here.



Best regards,
Krzysztof