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=-10.1 required=3.0 tests=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=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 1DBDDC3F68F for ; Fri, 14 Feb 2020 17:43:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E83BB206B6 for ; Fri, 14 Feb 2020 17:43:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581702226; bh=qXBQpGHuxOcxtmfWos87rZV4Lw8QLXlsO+sJcM2OHFU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=gbm12HvflqIKMMzhKllqDId2g0A6Lg7lpBsUYDAjOE8jhbv3UgryujXBFWQMbpmDd TrDGzfZPEz5YZMy++lGKK36qFrbr/+9FFj7FBGjUtPKvL0uqRSdkS7EGs9Xs3xq70E Qrb0n1QLSSl2HSBip9+n499Vi7WlV45JOMWqZgWY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729347AbgBNRno (ORCPT ); Fri, 14 Feb 2020 12:43:44 -0500 Received: from mail.kernel.org ([198.145.29.99]:50158 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389577AbgBNQDP (ORCPT ); Fri, 14 Feb 2020 11:03:15 -0500 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 A08152467E; Fri, 14 Feb 2020 16:03:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581696194; bh=qXBQpGHuxOcxtmfWos87rZV4Lw8QLXlsO+sJcM2OHFU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1sP4er29ICfXGHblPpe5ok5IerGeDMvkCBfXPfEsICaiyiw8vYujJvwpSd1hjPULx VYT2vEZFysUQYJ855gjRiqGt/vcT7tC6ll/Vy9ISETmk8qHVWdM9MvVAPXZrd5OPIi U6nHk4V+V+Z/oM/fGm8L59F2vl6uTNsx79K+fHzE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Philippe Schenker , Mark Brown , Sasha Levin , linux-spi@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 062/459] spi: fsl-lpspi: fix only one cs-gpio working Date: Fri, 14 Feb 2020 10:55:12 -0500 Message-Id: <20200214160149.11681-62-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214160149.11681-1-sashal@kernel.org> References: <20200214160149.11681-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Philippe Schenker [ Upstream commit bc3a8b295e5bca9d1ec2622a6ba38289f9fd3d8a ] Why it does not work at the moment: - num_chipselect sets the number of cs-gpios that are in the DT. This comes from drivers/spi/spi.c - num_chipselect gets set with devm_spi_register_controller, that is called in drivers/spi/spi.c - devm_spi_register_controller got called after num_chipselect has been used. How this commit fixes the issue: - devm_spi_register_controller gets called before num_chipselect is being used. Fixes: c7a402599504 ("spi: lpspi: use the core way to implement cs-gpio function") Signed-off-by: Philippe Schenker Link: https://lore.kernel.org/r/20191204141312.1411251-1-philippe.schenker@toradex.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-fsl-lpspi.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 3528ed5eea9b5..92e460d4f3d10 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -862,6 +862,22 @@ static int fsl_lpspi_probe(struct platform_device *pdev) fsl_lpspi->dev = &pdev->dev; fsl_lpspi->is_slave = is_slave; + controller->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32); + controller->transfer_one = fsl_lpspi_transfer_one; + controller->prepare_transfer_hardware = lpspi_prepare_xfer_hardware; + controller->unprepare_transfer_hardware = lpspi_unprepare_xfer_hardware; + controller->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + controller->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX; + controller->dev.of_node = pdev->dev.of_node; + controller->bus_num = pdev->id; + controller->slave_abort = fsl_lpspi_slave_abort; + + ret = devm_spi_register_controller(&pdev->dev, controller); + if (ret < 0) { + dev_err(&pdev->dev, "spi_register_controller error.\n"); + goto out_controller_put; + } + if (!fsl_lpspi->is_slave) { for (i = 0; i < controller->num_chipselect; i++) { int cs_gpio = of_get_named_gpio(np, "cs-gpios", i); @@ -885,16 +901,6 @@ static int fsl_lpspi_probe(struct platform_device *pdev) controller->prepare_message = fsl_lpspi_prepare_message; } - controller->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32); - controller->transfer_one = fsl_lpspi_transfer_one; - controller->prepare_transfer_hardware = lpspi_prepare_xfer_hardware; - controller->unprepare_transfer_hardware = lpspi_unprepare_xfer_hardware; - controller->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; - controller->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX; - controller->dev.of_node = pdev->dev.of_node; - controller->bus_num = pdev->id; - controller->slave_abort = fsl_lpspi_slave_abort; - init_completion(&fsl_lpspi->xfer_done); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -952,12 +958,6 @@ static int fsl_lpspi_probe(struct platform_device *pdev) if (ret < 0) dev_err(&pdev->dev, "dma setup error %d, use pio\n", ret); - ret = devm_spi_register_controller(&pdev->dev, controller); - if (ret < 0) { - dev_err(&pdev->dev, "spi_register_controller error.\n"); - goto out_controller_put; - } - return 0; out_controller_put: -- 2.20.1