[U-Boot] [PATCH v2 05/11] serial: Remove unnecessary delay in serial_s3c24x0

Marek Vasut marex at denx.de
Fri Sep 14 20:05:42 CEST 2012


Dear José Miguel Gonçalves,

> The loop used to make a delay after baudrate setting is not necessary.
> Moreover it is removed by the GCC optimizer (at least with GCC 4.6).
> 
> Signed-off-by: José Miguel Gonçalves <jose.goncalves at inov.pt>

Acked-by: Marek Vasut <marex at denx.de>

> ---
> Changes for v2:
>    - New patch
> ---
>  drivers/serial/serial_s3c24x0.c |    3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/serial/serial_s3c24x0.c
> b/drivers/serial/serial_s3c24x0.c index c9bc121..ec5d1cb 100644
> --- a/drivers/serial/serial_s3c24x0.c
> +++ b/drivers/serial/serial_s3c24x0.c
> @@ -111,15 +111,12 @@ void _serial_setbrg(const int dev_index)
>  	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
>  	u32 pclk;
>  	u32 baudrate;
> -	int i;
> 
>  	pclk = get_PCLK();
>  	baudrate = gd->baudrate;
> 
>  	writel((pclk / baudrate / 16) - 1, &uart->ubrdiv);
>  	writel(udivslot[(pclk / baudrate) % 16], &uart->udivslot);
> -	for (i = 0; i < 100; i++)
> -		/* Delay */ ;
>  }
> 
>  #if defined(CONFIG_SERIAL_MULTI)

Best regards,
Marek Vasut


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