From fba594a848f6f35417a358565086d22c533c19c8 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 2 Sep 2014 17:39:14 -0400 Subject: [PATCH] serial: core: Remove unsafe x_char optimization uart_unthrottle() attempts to avoid sending START and the previous x_char if the previous x_char has not yet been sent. However, this optimization could leave the sender in a throttled state; for example, if the sender is throttled and this unthrottle coincides with a manual tcflow(TCION) from user-space, then neither START would be sent. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- Reading git-format-patch failed