From patchwork Tue Dec 17 12:22:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 11297475 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F3F07139A for ; Tue, 17 Dec 2019 12:22:48 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C666B21739 for ; Tue, 17 Dec 2019 12:22:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WMF/yN/x"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="bM70QIlp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C666B21739 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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:In-Reply-To:References: List-Owner; bh=LwXF/Dy3Wni31kns1zyOZVqfDN+vTMcZPJ5r1CiblUE=; b=WMF/yN/xFthPsQ YAQ59eCrdVintGeq2SKjy9rQsuZLql25SWHu0CsOATEd3mBedPPmtXB9qEBzxI41H/ebgI9cvXvij rQ0cCowZPCyoMNP5vkfBa3p2QYtybg+rJRlMyzIDai7TKWppxfnYddlaf6njdr7bypO5QvnHTx6/m cdCwzzkwSIno6gQDCKxKsj3royHoT7DNFmRHWRRGRw4T0BLorspSJq3ULIQrYQZV6ykuio4HCB8LX TT8+hWrW3jFlqCBT2VJo7i1WPP3FUIssef2/wDmjntY6CI/cAqmskeqeI/tOAMi2dFP64HvFtmyC5 peNjbN7PMwG5cqpcsIKw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihBsG-00031F-FO; Tue, 17 Dec 2019 12:22:48 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihBsD-00030r-ON; Tue, 17 Dec 2019 12:22:47 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id xBHCMgIe018636; Tue, 17 Dec 2019 06:22:42 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1576585362; bh=qM9xJdxmrDLNaME/gOYVTnReJwrGrvAeNa92VYltRFM=; h=From:To:CC:Subject:Date; b=bM70QIlptkcNkidobo0JsKJTMLt21guPkDWa1gj2BY6HTH+1KGrOAEr/fwTXy4xe/ rtwCTbOCi79rEhbnrtlKk76ZFwkUUSaEcSX1ISRsoX/bqY8KKw6FF46rXmAvVIHm3j 6+We98QHhTHmX/cwOhwWvnYfRARygw8FcETyZ3rs= Received: from DLEE107.ent.ti.com (dlee107.ent.ti.com [157.170.170.37]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id xBHCMgmr017727 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 17 Dec 2019 06:22:42 -0600 Received: from DLEE101.ent.ti.com (157.170.170.31) by DLEE107.ent.ti.com (157.170.170.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Tue, 17 Dec 2019 06:22:42 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE101.ent.ti.com (157.170.170.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Tue, 17 Dec 2019 06:22:42 -0600 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id xBHCMcZh054542; Tue, 17 Dec 2019 06:22:39 -0600 From: Peter Ujfalusi To: , , , , Subject: [PATCH v2] mmc: bcm2835: Use dma_request_chan() instead dma_request_slave_channel() Date: Tue, 17 Dec 2019 14:22:54 +0200 Message-ID: <20191217122254.7103-1-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191217_042245_876699_B7939F8B X-CRM114-Status: GOOD ( 13.38 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [198.47.23.248 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender 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: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, vkoul@kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. By using dma_request_chan() directly the driver can support deferred probing against DMA. Signed-off-by: Peter Ujfalusi Reviewed-by: Nicolas Saenz Julienne --- Hi, Changes since v1: - instead of returning jump to err: to free up resources Regards, Peter drivers/mmc/host/bcm2835.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c index 99f61fd2a658..c3d949847cbd 100644 --- a/drivers/mmc/host/bcm2835.c +++ b/drivers/mmc/host/bcm2835.c @@ -1393,7 +1393,17 @@ static int bcm2835_probe(struct platform_device *pdev) host->dma_chan = NULL; host->dma_desc = NULL; - host->dma_chan_rxtx = dma_request_slave_channel(dev, "rx-tx"); + host->dma_chan_rxtx = dma_request_chan(dev, "rx-tx"); + if (IS_ERR(host->dma_chan_rxtx)) { + ret = PTR_ERR(host->dma_chan_rxtx); + host->dma_chan_rxtx = NULL; + + if (ret == -EPROBE_DEFER) + goto err; + + /* Ignore errors to fall back to PIO mode */ + } + clk = devm_clk_get(dev, NULL); if (IS_ERR(clk)) {