From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3BEA1C433DF for ; Mon, 24 Aug 2020 17:07:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0C670206F0 for ; Mon, 24 Aug 2020 17:07:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598288876; bh=TNTJMht98D/avL71tpnv2u61lqx7nxSbAoCOPVIXz+A=; h=From:To:Cc:Subject:Date:List-ID:From; b=JtZyI8dMgiy/No+A2Or6LIZxyYE8ffTNp/FQtoEkPUQClMZppaatGwYAKaKVnFG22 EzvQxcaWTomaZmsemTJVZc+/X1fL5Jvz69mApjZWkzElt66LpScl8SeleCOLywI2fI jZApPDYS3w/Y42KC0uhxfkKQcLEk3HlVxGEY6DVI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725905AbgHXRHy (ORCPT ); Mon, 24 Aug 2020 13:07:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:41062 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727881AbgHXQiZ (ORCPT ); Mon, 24 Aug 2020 12:38:25 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 22A9022D00; Mon, 24 Aug 2020 16:37:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598287073; bh=TNTJMht98D/avL71tpnv2u61lqx7nxSbAoCOPVIXz+A=; h=From:To:Cc:Subject:Date:From; b=pE5jAYFWsDCFsitckQBaosjtOXaPXhx9iphqwri8rcD2TVUZ0M/sNcde9dELmTqyG AUr9Mpfk9Phgxz7Qr+u4gt377ZJAdgDMrgjzQzb8RzpC/fNmXgroH6bUqVKWdl0CO6 vG9xuEo+44+z48kFSqv3GAm9Z6BLM5DvloHRFs6A= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tobias Schramm , Mark Brown , Sasha Levin , linux-spi@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.4 01/38] spi: stm32: clear only asserted irq flags on interrupt Date: Mon, 24 Aug 2020 12:37:13 -0400 Message-Id: <20200824163751.606577-1-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tobias Schramm [ Upstream commit ae1ba50f1e706dfd7ce402ac52c1f1f10becad68 ] Previously the stm32h7 interrupt thread cleared all non-masked interrupts. If an interrupt was to occur during the handling of another interrupt its flag would be unset, resulting in a lost interrupt. This patches fixes the issue by clearing only the currently set interrupt flags. Signed-off-by: Tobias Schramm Link: https://lore.kernel.org/r/20200804195136.1485392-1-t.schramm@manjaro.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-stm32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index b222ce8d083ef..db4c1584327c1 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -961,7 +961,7 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id) if (!spi->cur_usedma && (spi->rx_buf && (spi->rx_len > 0))) stm32h7_spi_read_rxfifo(spi, false); - writel_relaxed(mask, spi->base + STM32H7_SPI_IFCR); + writel_relaxed(sr & mask, spi->base + STM32H7_SPI_IFCR); spin_unlock_irqrestore(&spi->lock, flags); -- 2.25.1