From patchwork Wed May 5 21:37:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhupesh Sharma X-Patchwork-Id: 12241159 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=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 6BC0BC43460 for ; Wed, 5 May 2021 21:40:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F68E613E3 for ; Wed, 5 May 2021 21:40:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234709AbhEEVk6 (ORCPT ); Wed, 5 May 2021 17:40:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49872 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234698AbhEEVkd (ORCPT ); Wed, 5 May 2021 17:40:33 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DAA4BC061761 for ; Wed, 5 May 2021 14:39:36 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id e15so3047258pfv.10 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=ZDwb/Z01R2jDhH8950KLCndTL8RlbSsn5D66pW7N2jk/I+tZOya2nYk7GqwLBm5f3D GbkyZcwySQhA0sKQSySbH29uloP6TNSrV+pzMJPB9rhuBKF/9ykJboKl0WgP5+ZrAVQo dXy8B5hlF7eelj907Qhj5M4aYgG7+fvPVnf5A2xImCL0gSGd0OdP9duHYStctw5pKGco wrZj63T0JlZLg6kDTqyMxQBhRGDmJF9mKYGHGNq1aacrf1Pjn6FvAxrDIp3+4BkcvizU NXN5CBsI//aIOrVqH10dLLAOEYtLGWNWM3PfXupx/YuzeQN8QFlvz5FXeBGnxwc1xE54 Fsog== X-Gm-Message-State: AOAM5322cf4TwmjOXegspZ3CR2xt+Ip9VZSnC7VmgllkqYL4c3RqK7p3 ejXl+DQYhVXK4Yf6BxEIvLx/bQ== 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 Precedence: bulk List-ID: X-Mailing-List: dmaengine@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;