From: Ludovic Desroches <[email protected]> There is a macro named ATMEL_SERIAL_RINGSIZE which suggesting that it corresponds to the real size of the ring buffer. Let warn people that there is a factor of four since allocation size is sizeof(struct atmel_uart_char) * ATMEL_SERIAL_RINGSIZE.
Signed-off-by: Ludovic Desroches <[email protected]> Signed-off-by: Nicolas Ferre <[email protected]> --- drivers/tty/serial/atmel_serial.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 6c1ec7d0d497..857016367a7a 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -108,6 +108,12 @@ struct atmel_uart_char { u16 ch; }; +/* + * Be careful, the real size of the ring buffer is + * sizeof(atmel_uart_char) * ATMEL_SERIAL_RINGSIZE. It means that ring buffer + * can contain up to 1024 characters in PIO mode and up to 4096 characters in + * DMA mode. + */ #define ATMEL_SERIAL_RINGSIZE 1024 /* -- 2.9.0
