Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752055AbdGaJc2 (ORCPT ); Mon, 31 Jul 2017 05:32:28 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:11841 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750748AbdGaJc1 (ORCPT ); Mon, 31 Jul 2017 05:32:27 -0400 From: Bich HEMON To: Greg Kroah-Hartman , Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre TORGUE , "Jiri Slaby" , "linux-serial@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" CC: Bich HEMON Subject: [PATCH] serial: stm32: fix pio transmit timeout Thread-Topic: [PATCH] serial: stm32: fix pio transmit timeout Thread-Index: AQHTCd/X0MP9o8YHYUCpZ2xMua/a6A== Date: Mon, 31 Jul 2017 09:31:52 +0000 Message-ID: <1501493505-27933-1-git-send-email-bich.hemon@st.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.49] Content-Type: text/plain; charset="utf-8" Content-ID: <1B00007B14299642A25194DAEE2F7969@st.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-07-31_03:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by nfs id v6V9WXjT023182 Content-Length: 774 Lines: 26 From: Gerald Baeza 100µs was too short for low speed transmission (9600bps) Signed-off-by: Gerald Baeza Signed-off-by: Bich Hemon --- drivers/tty/serial/stm32-usart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 72c0ec1..b16e7e7 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -203,7 +203,7 @@ static void stm32_transmit_chars_pio(struct uart_port *port) ret = readl_relaxed_poll_timeout_atomic(port->membase + ofs->isr, isr, (isr & USART_SR_TXE), - 10, 100); + 10, 100000); if (ret) dev_err(port->dev, "tx empty not set\n"); -- 1.9.1