From patchwork Thu May 30 13:47:04 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Pargmann X-Patchwork-Id: 2636611 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork1.kernel.org (Postfix) with ESMTP id 05F1E40077 for ; Thu, 30 May 2013 13:48:25 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Ui3D6-0006hF-Mb; Thu, 30 May 2013 13:48:08 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Ui3D3-0008IV-Md; Thu, 30 May 2013 13:48:05 +0000 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Ui3D0-0008HB-Cm for linux-arm-kernel@lists.infradead.org; Thu, 30 May 2013 13:48:03 +0000 Received: from dude.hi.pengutronix.de ([2001:6f8:1178:2:21e:67ff:fe11:9c5c]) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1Ui3CX-0007Es-F0; Thu, 30 May 2013 15:47:33 +0200 Received: from mpa by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1Ui3CU-00053W-Gt; Thu, 30 May 2013 15:47:30 +0200 From: Markus Pargmann To: Greg Kroah-Hartman Subject: [PATCH] serial/imx: disable hardware flow control at startup Date: Thu, 30 May 2013 15:47:04 +0200 Message-Id: <1369921624-5595-1-git-send-email-mpa@pengutronix.de> X-Mailer: git-send-email 1.8.2.rc2 X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: mpa@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130530_094802_703568_945F543C X-CRM114-Status: GOOD ( 12.38 ) X-Spam-Score: -3.0 (---) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-3.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -1.1 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Sascha Hauer , linux-serial@vger.kernel.org, Markus Pargmann , Shawn Guo , Jiri Slaby , linux-arm-kernel@lists.infradead.org, Lucas Stach X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Lucas Stach We only want to enable hardware flow control if RTS/CTS pins are connected. Signed-off-by: Lucas Stach Signed-off-by: Markus Pargmann --- drivers/tty/serial/imx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 147c9e1..8cdfbd3 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -761,6 +761,8 @@ static int imx_startup(struct uart_port *port) temp = readl(sport->port.membase + UCR2); temp |= (UCR2_RXEN | UCR2_TXEN); + if (!sport->have_rtscts) + temp |= UCR2_IRTS; writel(temp, sport->port.membase + UCR2); if (USE_IRDA(sport)) {