Modify description on Kconfig
This patch modifies description of STDIO_BUFFER_SIZE config.
@@ -9,8 +9,10 @@ config STDIO_BUFFER_SIZE
int "C STDIO buffer size"
default 64
---help---
- Size of buffers using within the C buffered I/O interfaces.
- (printf, putchar, fwrite, etc.).
+ Size of buffers using within the C buffered I/O interfaces (printf,
+ putchar, fwrite, etc.). This function sets the initial I/O buffer
+ size. Zero disables I/O buffering. That size may be subsequently
+ modified using setvbuf().
config STDIO_LINEBUFFER
bool "STDIO line buffering"
