From patchwork Tue Nov 8 18:11:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Frayer X-Patchwork-Id: 13036658 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2E1BFC4332F for ; Tue, 8 Nov 2022 18:13:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=k7sRyTnrqypOicB+9p6FpwMGpP18qK0fSw0K/dlQs60=; b=jBZU9fayndghSD c2E6NxlxhSc+Ma8UWO42NM24YDlTPazjejZEq5dmUCBq+bO3dJPUml7lX5uooIpON6xpSPkoqXvKt BTb3vv5q40ZRXMrDgqMeBqZbQVWiKZ+PKLeCh5KELpqnkjsLl4xPb6A6m5xnPIQofvpPf7sVdQRsp 32VRalbRjDp8JLRccIKKLMDA2svtqwPPTpdeNT2sfYvyh71RVCYXE3Q+hC2vML8e04fSCJ+dQJN1g HuRGeBGrJ/HAp2/glJcrgrMUh98bKBzTyOE4SrsGSPu7RGs0cNVGXEMnDApWXU5u4XPMcPuslZ5QE 0Iw7d3sjddHw9QOggjYw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1osT4y-007NKC-2b; Tue, 08 Nov 2022 18:12:08 +0000 Received: from mail-wm1-x335.google.com ([2a00:1450:4864:20::335]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1osT4u-007NFr-7t for linux-arm-kernel@lists.infradead.org; Tue, 08 Nov 2022 18:12:05 +0000 Received: by mail-wm1-x335.google.com with SMTP id t25-20020a1c7719000000b003cfa34ea516so1305407wmi.1 for ; Tue, 08 Nov 2022 10:12:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=A8Nn7FR+ibB53QJL8o9ZqwbAccpQC4pR0InqfudyfLs=; b=PBjnfDVmggCWMS+XYXPxAz5Am3hcRfWSxmYSECtzCK6iTX7uOwU6CzJYJDkLTML2+m Nv/WVSYdtAY0PKfDxZLJ/LXynJJafnY/stksKFozK4dbIM+iPhPoFwgJwG13aNwBBX3W wvsQ8fGLerysGOXIwc/Gzk2EiWgff6bEd6KWuBAHk0I2l27IkzR/5tsYnbstN66ETAjb HNZXvWvsbMoXfL1z+9BsFcMmvI7AERuBSoeDKZX7b/eGcXSfGiNxEF3UBU2T8Q/suGBr R6TPk5+ryEBj+RhpPICftHvxHnFt9ZzHi2D8pS2z3MQcI3Q5PlC3GjvHIARZZweq5lOx c+GQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=A8Nn7FR+ibB53QJL8o9ZqwbAccpQC4pR0InqfudyfLs=; b=7dvpU4zsUPWl35LTF/XgokuOtDNEotkDu+6NGrRwscsDE6vKb2xlzaw5FGQWD5+wQA +3srpufqfPFZF/RdQ+tnpwfmJ47FCKwkaelDwrm08sxzB/A0kAWfFuBiTmm+VaLRC8rN UZVX8DGfMTEp5IqyFiFYyNmjUiTAbvyIhWYKnwOdogJt6Uty6GfI/BwgcXn/k1rJyNKc GYtzbx6aBGq8HrSf7AZSAHOp96h9O1X3csSWYE/oOFSj/WgYFCYRR4ongzwvnIc1xwER X7Rw7cOTpeyoaVMr2VHyedLIAXcKhXG/lNldiEFrtAEKHkF5rxKzk9dN/3WSCeIyTIY6 zlgg== X-Gm-Message-State: ANoB5plmMZVX+bNJr9XQdMdsCqe6uAk5CJEuLn9L7Gq+NOp8g5c86kl2 5QPsblKxcKcgNWVARWwq3YHZbQ== X-Google-Smtp-Source: AA0mqf5OYJs6Mea9M4/w5JBh0YgnFEs93kqHNrZKS3FhEDXrM473nHj+/uL++VfmlJWAiAn+kgB4jg== X-Received: by 2002:a05:600c:2d44:b0:3cf:aae0:8367 with SMTP id a4-20020a05600c2d4400b003cfaae08367mr8518017wmg.132.1667931119895; Tue, 08 Nov 2022 10:11:59 -0800 (PST) Received: from nicolas-Precision-3551.home ([2001:861:5180:dcc0:7d10:e9e8:fd9a:2f72]) by smtp.gmail.com with ESMTPSA id q12-20020a5d61cc000000b002238ea5750csm13037109wrv.72.2022.11.08.10.11.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Nov 2022 10:11:59 -0800 (PST) From: Nicolas Frayer To: nm@ti.com, ssantosh@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, peter.ujfalusi@gmail.com, vkoul@kernel.org, dmaengine@vger.kernel.org, grygorii.strashko@ti.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-omap@vger.kernel.org, netdev@vger.kernel.org Cc: khilman@baylibre.com, glaroque@baylibre.com, nfrayer@baylibre.com Subject: [PATCH v4 3/4] dmaengine: ti: k3-udma: Deferring probe when soc_device_match() returns NULL Date: Tue, 8 Nov 2022 19:11:43 +0100 Message-Id: <20221108181144.433087-4-nfrayer@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221108181144.433087-1-nfrayer@baylibre.com> References: <20221108181144.433087-1-nfrayer@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221108_101204_304403_EDE78928 X-CRM114-Status: GOOD ( 15.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When the k3 socinfo driver is built as a module, there is a possibility that it will probe after the k3 udma driver and the later returns -ENODEV. By deferring the k3 udma probe we allow the k3 socinfo to probe and register the soc_device_attribute structure needed by the k3 udma driver. Signed-off-by: Nicolas Frayer --- drivers/dma/ti/k3-udma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 7b5081989b3d..a6bb5077900b 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -5285,7 +5285,7 @@ static int udma_probe(struct platform_device *pdev) soc = soc_device_match(k3_soc_devices); if (!soc) { dev_err(dev, "No compatible SoC found\n"); - return -ENODEV; + return -EPROBE_DEFER; } ud->soc_data = soc->data;