From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELvjIK5iznFby920juDvdXsev4rduS8tLthVYsN20+TOYIXtThPGchYxiN6aFFvrdbTxOD/0 ARC-Seal: i=1; a=rsa-sha256; t=1521617386; cv=none; d=google.com; s=arc-20160816; b=OQEZCiUIPwkfkOsGQ+As/GwAYzrgIhQuICNsB0soWKjQft3X6jvA1KmuuU+0LhnQ6y f8t3iAgCdn+2JZPzmOTp5MwiB9uEIniWDGoJfWg8ynaH603w/ujpMCkKFucWVOXSRUwO uOs6R4Ob2FFfcdasr1DF3oYd4XAqFVYeasw+9VA30WFrNILzZeXZ3l5kwZkxjOcVjSiu FYCsSMFuDNlKJFUdfDVXVLj5/sb5k52pHut3XfSQ1tCxBh18Zx3Aalq4Wtil1PuHcmOx iZbRXnRmmNFYf0Z+ZEEpukumnLMD2f2Ij80QtjV0sqXXJ1Csc8FrL9bN6BlkNCH7D9JG F9lw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:content-transfer-encoding:spamdiagnosticmetadata :spamdiagnosticoutput:content-language:accept-language:in-reply-to :references:message-id:date:thread-index:thread-topic:subject:cc:to :from:dkim-signature:arc-authentication-results; bh=/3cvl8Dj6CeRBTZfzzzlBHM+JJYAyDXPY73/cCqd9tA=; b=EEg8TaDLFOT8sjJnNokJrAmUIzrXwhjClkV9XULG57lG1vMURc97qtkUJGi967lr5i MdTpDxp3X99NDfCnqmVKRm5RjrcMKYQzf+S4fbVylW40ln3nEjsZpcsDyahcCXOpKpfF ybTLMUrIfzXkbsSpHPVUgV+i82IOQWb8IQulTkYj9P06f4LCHiD23GlRGPvMhrIAnLlv bzrT0Hd5lspJyDP/fECAzjSg3iz1HDZ51/eggZ67pMMALdLiKCQLDZ9KaLfjmdB0WZrb iiuZ9iay/xo6FOFB3PTjU1f0nv5wZSqbs2kqG4xaGnsPsU9LCWBYRyKX6r0sjxHG2WA6 nmqQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@nxp.com header.s=selector1 header.b=YI8ciR2i; spf=pass (google.com: domain of nipun.gupta@nxp.com designates 104.47.0.72 as permitted sender) smtp.mailfrom=nipun.gupta@nxp.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nxp.com Authentication-Results: mx.google.com; dkim=pass header.i=@nxp.com header.s=selector1 header.b=YI8ciR2i; spf=pass (google.com: domain of nipun.gupta@nxp.com designates 104.47.0.72 as permitted sender) smtp.mailfrom=nipun.gupta@nxp.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nxp.com From: Nipun Gupta To: Bharat Bhushan , "robin.murphy@arm.com" , "hch@lst.de" , "linux@armlinux.org.uk" , "gregkh@linuxfoundation.org" , "m.szyprowski@samsung.com" CC: "bhelgaas@google.com" , "zajec5@gmail.com" , "andy.gross@linaro.org" , "david.brown@linaro.org" , "dan.j.williams@intel.com" , "vinod.koul@intel.com" , "thierry.reding@gmail.com" , "robh+dt@kernel.org" , "frowand.list@gmail.com" , "jarkko.sakkinen@linux.intel.com" , "rafael.j.wysocki@intel.com" , "dmitry.torokhov@gmail.com" , "johan@kernel.org" , "msuchanek@suse.de" , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , "linux-wireless@vger.kernel.org" , "linux-arm-msm@vger.kernel.org" , "linux-soc@vger.kernel.org" , "dmaengine@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "linux-tegra@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-pci@vger.kernel.org" , Leo Li Subject: RE: [PATCH v2 1/2] dma-mapping: move dma configuration to bus infrastructure Thread-Topic: [PATCH v2 1/2] dma-mapping: move dma configuration to bus infrastructure Thread-Index: AQHTwOGuh4ghPV/yzkyrY/8xyV2sSKPaSBKAgAACAZA= Date: Wed, 21 Mar 2018 07:29:38 +0000 Message-ID: References: <1520868292-2479-1-git-send-email-nipun.gupta@nxp.com> <1521615323-4752-1-git-send-email-nipun.gupta@nxp.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [14.142.187.166] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;HE1PR0401MB2459;7:ylF548+7nkmOh0cJ32Do9cpF6TL3/KiscRlfNd5goJLJRBpxolJ4snZKH63Rl3n5BEfzKl3N1IMkQ+l5GT4zunRpXMwi5cThjjai/pY23NK9KUm3A1YqGnWK5UpJgdskyjfeHOSaXGAyAajl48GMQAkaa016mdkXQMHnywxsLDVH3C+XhBhEBdpPmOkL3kdByDSsYCbKDj/urVs1woeiAhXXzXkiejKmqZ57SRfbysaSlKKlJXT99oHK6PiNFC9N x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: e9eb292a-daf9-46d6-47d9-08d58efd817a x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(2017052603328)(7153060)(7193020);SRVR:HE1PR0401MB2459; 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x-microsoft-antispam-message-info: U9ixWp02lw2wyaDrq937z6N/B9zs4NrK0pcrFWmoj0Qk6Hey1e9OWCnToeDiiUesGfZhfT18QzcUioYOjmbKNzxJm+CGaub676U1y/bWZI59Q/4CSYl5tMpXyaNbziDGSoWMVV7FJypBCzCAdE2O95wRHMNjLLUt7C/f9pWCfJnwnpD9HVudQXKmMetHsrSSoRf6gbdAHPMyvAxKvshqJha8Aw++pVC43hrbB8XwwWtVElU3wnQkZz9Yq6h3K4BFnxvf7iKViln3FxvXvyhcFa4Br3i2UxArrd8eXgcmaHMqp1eAdWILxSz9KPMrRotT7TSrCXTC1RR7F4w/4xnqVg== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: e9eb292a-daf9-46d6-47d9-08d58efd817a X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Mar 2018 07:29:39.0281 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR0401MB2459 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1594746017210545974?= X-GMAIL-MSGID: =?utf-8?q?1595531472723073679?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: > -----Original Message----- > From: Bharat Bhushan > Sent: Wednesday, March 21, 2018 12:49 > > > > +int dma_configure(struct device *dev) > > +{ > > + if (dev->bus->dma_configure) > > + return dev->bus->dma_configure(dev); >=20 > What if dma_common_configure() is called in case "bus->dma_configure" is > not defined? >=20 > Thanks > -Bharat I think it is cleaner for bus to call '/dma_common_configure/' rather than this been called implicitly, but Robin/Christoph can comment better on this. Thanks, Nipun