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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 87206C433E3 for ; Mon, 24 Aug 2020 16:47:21 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 39A1520578 for ; Mon, 24 Aug 2020 16:47:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kY4SWFrO"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="f72e9gFr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 39A1520578 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jBqc1RqAzlORE/43pMGQGI4GvaF9f07J4WOdvqReciE=; b=kY4SWFrO2xhD8Vrh3qr2VEO8s rRq/eu1bckuBufV2zDDmeHypqmQ7e1VAfzqxH4J7zaNDJBSLlWAnlaRJWxIbQJEohcWTq03xls5df i9lkV5ETB3Lhg3nzp1CSKaVPP/K+XkEU7kzISEM0Zw3UAAhfYqBYTwR4q1gk7pEULBZbvI9wYwp1h cuZgm2MWMa/l7GEBXgkvcJGMhSs0nsNRFigcpU8b9anHdCjX/UymgZHkOn0RqlghKuKlBDA16TfcZ 625pWjJMY7UHZMybEFkIqXU/3MpLDqMgy8wOwZUZsj1q1GWsJXzyt25ax+QrrGwW6e/55JB+DjCZ+ xMmGwsDcg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kAFaA-0004U9-Al; Mon, 24 Aug 2020 16:44:30 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kAFUo-0001CU-LE for linux-arm-kernel@lists.infradead.org; Mon, 24 Aug 2020 16:39:01 +0000 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 0781C22D71; Mon, 24 Aug 2020 16:38:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598287138; bh=loNW8vulpaTwGdG8J1vyIIQEP2OudAGgSdq4gP20T0g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f72e9gFrPJ6JaHk6hfLwWNxbcbihnOGR62RY5llLBlM5xzwjtnEHBUyPUct40wnMb SFTbyN9O9amCNBeWP7huiIsew0PMed2a7O3TEVjTwhqQw6iJ+nGtAD9A8wWGOfRSgW ai8rFyvKivDpj1MWzOT7c/IveMIpX/KhaIZaINVI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 09/21] spi: stm32: fix stm32_spi_prepare_mbr in case of odd clk_rate Date: Mon, 24 Aug 2020 12:38:33 -0400 Message-Id: <20200824163845.606933-9-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200824163845.606933-1-sashal@kernel.org> References: <20200824163845.606933-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200824_123858_779727_4E7FB106 X-CRM114-Status: GOOD ( 13.39 ) 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: Sasha Levin , Amelie Delaunay , linux-spi@vger.kernel.org, Alain Volmat , Mark Brown , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Amelie Delaunay [ Upstream commit 9cc61973bf9385b19ff5dda4a2a7e265fcba85e4 ] Fix spi->clk_rate when it is odd to the nearest lowest even value because minimum SPI divider is 2. Signed-off-by: Amelie Delaunay Signed-off-by: Alain Volmat Link: https://lore.kernel.org/r/1597043558-29668-4-git-send-email-alain.volmat@st.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-stm32.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index ad1e55d3d5d59..391a20b3d2fda 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -254,7 +254,8 @@ static int stm32_spi_prepare_mbr(struct stm32_spi *spi, u32 speed_hz) { u32 div, mbrdiv; - div = DIV_ROUND_UP(spi->clk_rate, speed_hz); + /* Ensure spi->clk_rate is even */ + div = DIV_ROUND_UP(spi->clk_rate & ~0x1, speed_hz); /* * SPI framework set xfer->speed_hz to master->max_speed_hz if -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel