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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 1F6BFC433B4 for ; Wed, 5 May 2021 21:40:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD6CD613E3 for ; Wed, 5 May 2021 21:40:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234811AbhEEVlF (ORCPT ); Wed, 5 May 2021 17:41:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234783AbhEEVkm (ORCPT ); Wed, 5 May 2021 17:40:42 -0400 Received: from mail-pg1-x533.google.com (mail-pg1-x533.google.com [IPv6:2607:f8b0:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF597C06138B for ; Wed, 5 May 2021 14:39:36 -0700 (PDT) Received: by mail-pg1-x533.google.com with SMTP id y30so2806254pgl.7 for ; Wed, 05 May 2021 14:39:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pEJvk1zZudo0cXLtIrFaUbh6obXgvIjn1HyujLXL5g8=; b=drxD5dEZDc2p/dj0Qmi1fQTn6Q3YHavDpdKXgJUF1gIWA3iewBUPcmJbfbJBKSwaGt YH+4AdQaQnY2k/Z8ldO9jkr99qr6IL7vtp28/+8df4h2qFM9ZoatOqRL+MzI1ykgKkIo +f9+n1tgHrJEe0tvSp/+c/BERGe0Oh1G28PEi8xlUvQJ9u2VnaXQiYMbU2apD1o865pg YP934Pl+KNRAS8tiDpIDF0KHwTQJ5S2plGlxuLr6dwmSJoXrYM9a/TQI+Ti65qWIr4nM ompxuzVLD2EPYntRS8CjQV+B+Yx5TV4QT4pI14FKtWXOL94pTnalF3e3TYNBLCZnR2YC TkWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pEJvk1zZudo0cXLtIrFaUbh6obXgvIjn1HyujLXL5g8=; b=eT206tuj1gVpi11qm9uMag4uHNTSKJ9V0CIBwyboPPF4446Kk9Gpl48wA2s8FXq5Tn n254cnMs3fs4hcEjL+Vxfvvq/TRbhbUTyjuBLoSTXqVvfVxRRbeLv7nOmFHYA79Kh2V0 S0o/qm2ik/gPV4lLrsTZhGuWSViyXzMR+5Fk4p+7h3XWWNUaySQWMPsGU//A37ncXqkV 3j/lxt3k4ltCNm49zRjfAl1cRoZfbahCh6WSB20IvFtxE/t8Nxd/wEol1QRE1XVWEWo+ NebXz4PPAeAuvunJT9F7vyzre/4ztlSzaQCKZGT2O837ZcIBKjx3IeWB+PtKA87wD0gL j35w== X-Gm-Message-State: AOAM532vL/dzZouNs1o24nDzhZZGGhRQYDx9pUFzJ/ST83h756seYbMp p0htU7rh3L4pfjCLGG442Zj6brr0ViZjXQ== X-Google-Smtp-Source: ABdhPJzZGmtSzWKxV6S/rcvlS9LRf33OH03vUVvmpCPZ2boGDz1MHax4REK9um6246B8XG2VFNm1wg== X-Received: by 2002:a05:6a00:ad6:b029:28c:c28d:d3c5 with SMTP id c22-20020a056a000ad6b029028cc28dd3c5mr1105527pfl.54.1620250776482; Wed, 05 May 2021 14:39:36 -0700 (PDT) Received: from localhost.localdomain.name ([223.235.141.68]) by smtp.gmail.com with ESMTPSA id z26sm167031pfq.86.2021.05.05.14.39.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 May 2021 14:39:36 -0700 (PDT) From: Bhupesh Sharma To: linux-arm-msm@vger.kernel.org Cc: bhupesh.sharma@linaro.org, Thara Gopinath , Bjorn Andersson , Rob Herring , Andy Gross , Herbert Xu , "David S . Miller" , Stephen Boyd , Michael Turquette , Vinod Koul , dmaengine@vger.kernel.org, linux-clk@vger.kernel.org, linux-crypto@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, bhupesh.linux@gmail.com Subject: [PATCH v2 15/17] crypto: qce: Defer probing if BAM dma is not yet initialized Date: Thu, 6 May 2021 03:07:29 +0530 Message-Id: <20210505213731.538612-16-bhupesh.sharma@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210505213731.538612-1-bhupesh.sharma@linaro.org> References: <20210505213731.538612-1-bhupesh.sharma@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since the Qualcomm qce crypto driver needs the BAM dma driver to be setup first (to allow crypto operations), it makes sense to defer the qce crypto driver probing in case the BAM dma driver is not yet probed. This fixes the qce probe failure issues when both qce and BMA dma are compiled as static part of the kernel. Cc: Thara Gopinath Cc: Bjorn Andersson Cc: Rob Herring Cc: Andy Gross Cc: Herbert Xu Cc: David S. Miller Cc: Stephen Boyd Cc: Michael Turquette Cc: Vinod Koul Cc: dmaengine@vger.kernel.org Cc: linux-clk@vger.kernel.org Cc: linux-crypto@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: bhupesh.linux@gmail.com Signed-off-by: Bhupesh Sharma --- drivers/crypto/qce/core.c | 4 ++++ drivers/dma/qcom/bam_dma.c | 7 +++++++ 2 files changed, 11 insertions(+) diff --git a/drivers/crypto/qce/core.c b/drivers/crypto/qce/core.c index 9a7d7ef94687..3e742e9911fa 100644 --- a/drivers/crypto/qce/core.c +++ b/drivers/crypto/qce/core.c @@ -15,6 +15,7 @@ #include #include #include +#include #include "core.h" #include "cipher.h" @@ -201,6 +202,9 @@ static int qce_crypto_probe(struct platform_device *pdev) of_match_device(qce_crypto_of_match, &pdev->dev); int ret; + /* qce driver requires BAM dma driver to be setup first */ + if (!bam_is_probed()) + return -EPROBE_DEFER; qce = devm_kzalloc(dev, sizeof(*qce), GFP_KERNEL); if (!qce) diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index 2bc3b7c7ee5a..c854fcc82dbf 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -935,6 +935,12 @@ static void bam_channel_init(struct bam_device *bdev, struct bam_chan *bchan, INIT_LIST_HEAD(&bchan->desc_list); } +bool bam_is_probed(void) +{ + return bam_probed; +} +EXPORT_SYMBOL_GPL(bam_is_probed); + static const struct of_device_id bam_of_match[] = { { .compatible = "qcom,bam-v1.3.0", .data = &bam_v1_3_reg_info }, { .compatible = "qcom,bam-v1.4.0", .data = &bam_v1_4_reg_info }, @@ -1084,6 +1090,7 @@ static int bam_dma_probe(struct platform_device *pdev) if (ret) goto err_unregister_dma; + bam_probed = true; if (!bdev->bamclk) { pm_runtime_disable(&pdev->dev); return 0; -- 2.30.2