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Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1dXQEo-00031T-4o for linux-arm-kernel@lists.infradead.org; Tue, 18 Jul 2017 11:00:24 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1dXQEN-0007dz-S0; Tue, 18 Jul 2017 12:59:55 +0200 Received: from ukl by dude.hi.pengutronix.de with local (Exim 4.89) (envelope-from ) id 1dXQEN-00073Q-7y; Tue, 18 Jul 2017 12:59:55 +0200 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= To: linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 1/9] serial: fsl_lpuart: clear unsupported options in .rs485_config() Date: Tue, 18 Jul 2017 12:59:40 +0200 Message-Id: <20170718105948.21986-2-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170718105948.21986-1-u.kleine-koenig@pengutronix.de> References: <20170718105948.21986-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ukl@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-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.4.1 on merlin.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 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] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fabio Estevam , devicetree@vger.kernel.org, Shawn Guo , kernel@pengutronix.de Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org The struct serial_rs485 parameter is both input and output and is supposed to hold the actually used configuration on return. So clear unsupported settings. Signed-off-by: Uwe Kleine-König --- drivers/tty/serial/fsl_lpuart.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 343de8c384b0..4becfbf35c4c 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1019,6 +1019,11 @@ static int lpuart_config_rs485(struct uart_port *port, ~(UARTMODEM_TXRTSPOL | UARTMODEM_TXRTSE); writeb(modem, sport->port.membase + UARTMODEM); + /* clear unsupported configurations */ + rs485->delay_rts_before_send = 0; + rs485->delay_rts_after_send = 0; + rs485->flags &= ~SER_RS485_RX_DURING_TX; + if (rs485->flags & SER_RS485_ENABLED) { /* Enable auto RS-485 RTS mode */ modem |= UARTMODEM_TXRTSE;