From: Murali Karicheri Date: Thu, 1 May 2014 19:04:53 +0000 (-0400) Subject: serial: uart: add hw flow control support configuration X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~35^2~15 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06aa82e498c144c7784a6f3d3b55458b272d6146;p=pandora-kernel.git serial: uart: add hw flow control support configuration 8250 uart driver currently supports only software assisted hw flow control. The software assisted hw flow control maintains a hw_stopped flag in the tty structure to stop and start transmission and use modem status interrupt for the event to drive the handshake signals. This is not needed if hw has flow control capabilities. This patch adds a DT attribute for enabling hw flow control for a uart port. Also skip stop and start if this flag is present in flag field of the port structure. Signed-off-by: Murali Karicheri CC: Rob Herring CC: Pawel Moll CC: Mark Rutland CC: Ian Campbell CC: Kumar Gala CC: Randy Dunlap CC: Jiri Slaby CC: Santosh Shilimkar Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed