From patchwork Thu Apr 7 12:31:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Valentin Caron X-Patchwork-Id: 558710 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C83AFC4321E for ; Thu, 7 Apr 2022 12:32:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245168AbiDGMeH (ORCPT ); Thu, 7 Apr 2022 08:34:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245178AbiDGMeF (ORCPT ); Thu, 7 Apr 2022 08:34:05 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE591118F72; Thu, 7 Apr 2022 05:32:04 -0700 (PDT) Received: from pps.filterd (m0241204.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 237AqVOs030925; Thu, 7 Apr 2022 14:31:42 +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=owUEJ7iD+BP82fjCmjwq+zWvle0UiOQCR5A8Eyb+rOQ=; b=oLV1pv6MD4SJFRpyMZZrkJJgDup7pVNL85ichA6seb4xdnpQZzQE29TpThs072YbnnwQ gJyt65twCWQy3vM2vMCQ/GN6uwQf8Bwt7xyWwSyQnuP0WTSaQ7OiqkLlZwlPvp8D3cwx DfIVddAcg3/iH4egEo55BYbBJx7YNnKzeFjXhv0opJiNMRxYvZeH27qzo9ErtJmeaJEV p1Oabnj7wJtZkbbmLMWascUhGQrW6l9Z5usXj9JWGT1Q3y301BOY10hi0vZLIWOyRMNi 4LFekVXMlfY3KzGqqol4hLckVT68UaTSMUGPioiuz9FGAKNQqZCMw+CpICum2DT1fb02 PQ== 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 3f6du14vyg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Apr 2022 14:31:42 +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 5A79110002A; Thu, 7 Apr 2022 14:31:20 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node2.st.com [10.75.127.5]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 5351021A223; Thu, 7 Apr 2022 14:31:20 +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; Thu, 7 Apr 2022 14:31:19 +0200 From: Valentin Caron To: Greg Kroah-Hartman , Jonathan Corbet CC: Jiri Slaby , Maxime Coquelin , Alexandre Torgue , Erwan Le Ray , Valentin Caron , , , , , Subject: [PATCH 0/3] serial: stm32: add earlycon and polling mode Date: Thu, 7 Apr 2022 14:31:06 +0200 Message-ID: <20220407123109.132035-1-valentin.caron@foss.st.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SFHDAG2NODE2.st.com (10.75.127.5) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.850,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-04-07_01,2022-04-07_01,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org - Add support of early console and polling mode in stm32-usart driver. - Avoid a possible infinite loop in putchar function. 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 | 101 +++++++++++++++++- drivers/tty/serial/stm32-usart.h | 2 + 4 files changed, 105 insertions(+), 5 deletions(-)