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Wed, 26 Jun 2019 07:14:19 -0700 (PDT) From: Sergey Organov To: Sascha Hauer Subject: [PATCH v2 5/7] serial: imx: set_termios(): do not enable autoRTS if RTS is unset Date: Wed, 26 Jun 2019 17:11:31 +0300 Message-Id: <1561558293-7683-6-git-send-email-sorganov@gmail.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1561558293-7683-1-git-send-email-sorganov@gmail.com> References: <20190614072801.3187-1-s.hauer@pengutronix.de> <1561558293-7683-1-git-send-email-sorganov@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190626_071422_723484_77163AE1 X-CRM114-Status: GOOD ( 12.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pengutronix Kernel Team , NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-serial@vger.kernel.org, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org set_termios() shouldn't set UCR2_CTSC bit if UCR2_CTS (=TIOCM_RTS) is cleared. Added corresponding check in imx_uart_rts_auto() to fix this. Reviewed-by: Sascha Hauer Tested-by: Sascha Hauer Signed-off-by: Sergey Organov --- drivers/tty/serial/imx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index e0f5365..4867f80 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -405,7 +405,8 @@ static void imx_uart_rts_inactive(struct imx_port *sport, u32 *ucr2) /* called with port.lock taken and irqs caller dependent */ static void imx_uart_rts_auto(struct imx_port *sport, u32 *ucr2) { - *ucr2 |= UCR2_CTSC; + if (*ucr2 & UCR2_CTS) + *ucr2 |= UCR2_CTSC; } /* called with port.lock taken and irqs off */ -- 2.10.0.1.g57b01a3 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel