From: Peter Hurley Date: Tue, 2 Sep 2014 21:39:14 +0000 (-0400) Subject: serial: core: Remove unsafe x_char optimization X-Git-Tag: fixes-for-v3.18-merge-window~14^2~69 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fba594a848f6f35417a358565086d22c533c19c8;p=pandora-kernel.git 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-diff-tree failed