On Thu, Jan 21, 2010 at 11:06:53PM +0100, Wolfram Sang wrote:

CCing linux-serial

On Thu, Jan 21, 2010 at 10:26:03PM +0100, Valentin Longchamp wrote:

quoted

The imx CTS trigger level is left at its reset value that is 32
chars. Since the RX FIFO has 32 entries, when CTS is raised, the
FIFO already is full. However, some serial port devices first empty
their TX FIFO before stopping when CTS is raised, resulting in lost
chars.

? Isn't that a flaw of the other side? Have you spotted other serial drivers
doing the same as your patch?

Arguably, but it's common behaviour of 16550A's and similar.