From mboxrd@z Thu Jan 1 00:00:00 1970 From: Trent Piepho Subject: Re: [PATCH 0/3] mtd: spi-nor: fix DMA-unsafe buffer issue between MTD and SPI Date: Tue, 26 Dec 2017 18:45:28 +0000 Message-ID: <1514313927.26695.19.camel@impinj.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: Content-Language: en-US Content-ID: <9F4DA121DFBF5C468E6931A7F02B59B9@namprd06.prod.outlook.com> Sender: linux-kernel-owner@vger.kernel.org To: "linux-mtd@lists.infradead.org" , "linux@armlinux.org.uk" , "broonie@kernel.org" , "cyrille.pitchen@wedev4u.fr" , "dwmw2@infradead.org" , "computersforpeace@gmail.com" , "boris.brezillon@free-electrons.com" , "vigneshr@ti.com" , "richard@nod.at" , "marek.vasut@gmail.com" Cc: "linux-spi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "nicolas.ferre@microchip.com" , "robh@kernel.org" , "radu.pirea@microchip.com" , "devicetree@vger.kernel.org" List-Id: devicetree@vger.kernel.org T24gU3VuLCAyMDE3LTEyLTI0IGF0IDA1OjM2ICswMTAwLCBDeXJpbGxlIFBpdGNoZW4gd3JvdGU6 DQo+IHRoaXMgc2VyaWVzIHRyaWVzIHRvIHNvbHZlIGEgbG9uZyB0aW1lIGlzc3VlIG9mIGNvbXBh dGliaWxpdHkgYmV0d2VlbiB0aGUNCj4gTVREIGFuZCBTUEkgc3ViLXN5c3RlbXMgYWJvdXQgd2hl dGhlciB3ZSBzaG91bGQgdXNlIERNQS1zYWZlIG1lbW9yeS4NCg0KQ2FuIHRoaXMgc2hvdWxkIHJl cGxhY2UgU29DIHNwZWNpZmljIGZpeGVzIGxpa2U6DQoNCmM2ODdjNDZlOWU0NQ0Kc3BpOiBzcGkt dGktcXNwaTogVXNlIGJvdW5jZSBidWZmZXIgaWYgcmVhZCBidWZmZXIgaXMgbm90IERNQSdibGUN Cg0KNzA5NDU3NmNjZGMzDQpzcGk6IGF0bWVsOiBmaXggY29ycnVwdGVkIGRhdGEgaXNzdWUgb24g U0FNOSBmYW1pbHkgU29Dcw0KDQpPciwgc2luY2UgdGhpcyBvbmx5IGZpeGVzIGluc3RhbmNlcyBv ZiBETUEtdW5zYWZlIGJ1ZmZlcnMgdXNlZCBpbg0KYWNjZXNzIHRvIFNQSSBOT1IgZmxhc2ggY2hp cHMsIGFuZCBzaW5jZSB0aGVyZSBhcmUgb3RoZXIgU1BJIG1hc3Rlcg0KaW50ZXJmYWNlIHVzZXJz LCB0aG9zZSBjaGlwIHNwZWNpZmljIGZpeGVzIGluIHNvbWUvYWxsIHNwaSBtYXN0ZXINCmRyaXZl cnMgYXJlIHN0aWxsIG5lZWRlZCB0byBmaXggdHJhbnNmZXJzIG5vdCBvcmlnaW5hdGVkIHZpYSBz cGktbm9yPyANCk9yIGFyZSBhbGwgdGhlIHByZXZpb3VzIGZpeGVzIG5lY2Vzc2FyeSBiZWNhdXNl IG9mIHNwaS1ub3IgZmxhc2ggKHZpYQ0KdWJpZnMgb3IgamZmczIpIGFuZCBvbmNlIHRoYXQncyBm aXhlZCB2aWEgdGhpcyBzZXJpZXMgdGhlcmUgYXJlIG5vIG1vcmUNCm9yaWdpbmF0b3JzIG9mIGRt YS11bnNhZmUgYnVmZmVycz8NCg0KPiBUaGUgU1BJIHN1Yi1zeXN0ZW0gaGFzIGFscmVhZHkgaW1w bGVtZW50ZWQgYSB3b3JrLWFyb3VuZCBvbiBpdHMgc2lkZSwNCj4gYmFzZWQgb24gdGhlIHNwaV9t YXBfYnVmKCkgZnVuY3Rpb24uIEhvd2V2ZXIgdGhpcyBmdW5jdGlvbiBoYXMgaXRzIG93bg0KPiBs aW1pdGF0aW9uIHRvby4gRXNwZWNpYWxseSwgZXZlbiBpZiBpdCBidWlsZHMgYSAnc3RydWN0IHNj YXR0ZXJsaXN0JyBmcm9tDQo+IGEgdm1hbGxvYydlZCBidWZmZXIsIGNhbGxpbmcgZG1hX21hcF9z ZygpIGlzIHN0aWxsIG5vdCBzYWZlIG9uIGFsbA0KPiBhcmNoaXRlY3R1cmVzLiBFc3BlY2lhbGx5 LCBvbiBBUk0gY29yZXMgdXNpbmcgZWl0aGVyIFZJUFQgb3IgVklWVCBkYXRhDQo+IGNhY2hlcywg ZG1hX21hcF9zZygpIGRvZXNuJ3QgdGFrZSB0aGUgY2FjaGUgYWxpYXNlcyBpc3N1ZSBpbnRvIGFj Y291bnQuDQo+IFRoZW4gbnVtZXJvdXMgY3Jhc2hlcyB3ZXJlIHJlcG9ydGVkIGZvciBzdWNoIGFy Y2hpdGVjdHVyZXMuDQoNCkNvdWxkIHRoZSBhYm92ZSBpc3N1ZSBhbHNvIGJlIGZpeGVkIHZpYSBj YWxscyB0bw0KZmx1c2hfa2VybmVsX3ZtYXBfcmFuZ2UoKSBhbmQgaW52YWxpZGF0ZV9rZXJuZWxf dm1hcF9yYW5nZSgpIHRvIGtlZXANCnRoZSBkYXRhIGNhY2hlIHZhbGlkPyAgT3IgaXMgdGhlcmUg YSByZWFzb24gdGhhdCB3b24ndCB3b3JrPw==