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[2620:137:e000::1:20]) by mx.google.com with ESMTP id w20-20020a1709027b9400b0015826837cd7si1972426pll.272.2022.04.08.15.41.10; Fri, 08 Apr 2022 15:41:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@foss.st.com header.s=selector1 header.b=2kt2tzQ0; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=foss.st.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235684AbiDHM3e (ORCPT + 99 others); Fri, 8 Apr 2022 08:29:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235671AbiDHM33 (ORCPT ); Fri, 8 Apr 2022 08:29:29 -0400 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E38B633DCA7; Fri, 8 Apr 2022 05:27:24 -0700 (PDT) Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 2389niGA022034; Fri, 8 Apr 2022 14:27:04 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=selector1; bh=dTAXQp+cFjdIWlRb6J7G7W0/qZzdDyJ57D7J0I+JRLE=; b=2kt2tzQ0xJEwsVv/p6RD8AeVwBts83H5Zwyswg20qjAYuGRw9iUTfj0NW5l1Api1G+Rg 5XFIUrVWGmpSqKnNdLP7+NNVjCw0EGCWcYEyAPEOmBVGFtc5SWpMA0qBHHDlt2Kd1PFe t9yeyWEVKAWzoheBb1/e9DJkwHICxxx4v4wetnX03dmcSmAhz/qMluxOC1AtUWx2Zxrz hC10JAYHoAoeaTU3HBQQSP1L45v0tkw+VaukveEvMzcqz6OZIQvVumaumNJl9ZMS7Y1a kljROp4Jh58qsRZO2P14ZCwFU5nFu8GS4YZeMAT+2MeaQZUPMPKo7t0Kid330teRwMiV Bg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3f8x9gu5ej-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 08 Apr 2022 14:27:03 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 04F8C10002A; Fri, 8 Apr 2022 14:27:03 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node2.st.com [10.75.127.5]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id F1FA121A21E; Fri, 8 Apr 2022 14:27:02 +0200 (CEST) Received: from localhost (10.75.127.49) by SFHDAG2NODE2.st.com (10.75.127.5) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Fri, 8 Apr 2022 14:27:02 +0200 From: Valentin Caron To: Greg Kroah-Hartman , Jonathan Corbet CC: Jiri Slaby , Maxime Coquelin , Alexandre Torgue , Erwan Le Ray , Valentin Caron , , , , , Subject: [PATCH V2 0/3] serial: stm32: add earlycon and polling mode Date: Fri, 8 Apr 2022 14:26:33 +0200 Message-ID: <20220408122636.505737-1-valentin.caron@foss.st.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG2NODE1.st.com (10.75.127.4) To SFHDAG2NODE2.st.com (10.75.127.5) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-04-08_04,2022-04-08_01,2022-02-23_01 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org - Add support of early console and polling mode in stm32-usart driver. - Avoid a possible infinite loop in putchar function. Changes since v1: - Fix warning "unused variable 'ret'" Valentin Caron (3): serial: stm32: remove infinite loop possibility in putchar function serial: stm32: add KGDB support serial: stm32: add earlycon support .../admin-guide/kernel-parameters.txt | 6 ++ drivers/tty/serial/Kconfig | 1 + drivers/tty/serial/stm32-usart.c | 100 +++++++++++++++++- drivers/tty/serial/stm32-usart.h | 2 + 4 files changed, 104 insertions(+), 5 deletions(-) -- 2.25.1