[U-Boot] [PATCH v2 14/19] lcd: Add support for flushing LCD fb from dcache after update

[Stephen Warren]

On 06/13/2012 10:19 AM, Simon Glass wrote:
> This provides an option for the LCD to flush the dcache after each update
> (puts, scroll or clear).

> diff --git a/common/cmd_echo.c b/common/cmd_echo.c

> +	/* Use puts() so that the LCD sees it as a new line */
>  	if (putnl)
> -		putc('\n');
> +		puts("\n");

That seems fragile - what if someone comes along and uses putc() in some
other code without having a clue that this requirement exists? What
stops putc() from detecting \n just like puts()?