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

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()?