From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukas Wunner Subject: Re: [PATCH v4 2/4] spi: Split spi message into max_dma_len size chunks Date: Fri, 12 Apr 2019 12:54:48 +0200 Message-ID: <20190412105448.6xamxj2wtuu3yxvt@wunner.de> References: <20190412102206.GG6909@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: stefan.wahren@i2se.com, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, meghana.madhyastha@gmail.com, kernel@martin.sperl.org To: Mark Brown Return-path: Content-Disposition: inline In-Reply-To: <20190412102206.GG6909@sirena.org.uk> <20190412094721.GE6909@sirena.org.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" List-Id: linux-spi.vger.kernel.org T24gRnJpLCBBcHIgMTIsIDIwMTkgYXQgMTA6NDc6MjFBTSArMDEwMCwgTWFyayBCcm93biB3cm90 ZToKPiBPbiBUaHUsIEFwciAxMSwgMjAxOSBhdCAxMTowMjoyNlBNICswMjAwLCBOb3JhbGYgVHLD uG5uZXMgd3JvdGU6Cj4gPiBEZW4gMTEuMDQuMjAxOSAyMC4xOCwgc2tyZXYgTHVrYXMgV3VubmVy Ogo+ID4gPiBPbiBUaHUsIEFwciAxMSwgMjAxOSBhdCAwNjo0MjozM1BNICswMjAwLCBOb3JhbGYg VHLDuG5uZXMgd3JvdGU6Cj4gPiA+ID4gQEAgLTEyOTksNiArMTI5OSwxMSBAQCBzdGF0aWMgdm9p ZCBfX3NwaV9wdW1wX21lc3NhZ2VzKHN0cnVjdCBzcGlfY29udHJvbGxlciAqY3RsciwgYm9vbCBp bl9rdGhyZWFkKQo+IAo+ID4gPiA+ICAJdHJhY2Vfc3BpX21lc3NhZ2Vfc3RhcnQoY3Rsci0+Y3Vy X21zZyk7Cj4gCj4gPiA+ID4gKwlyZXQgPSBzcGlfc3BsaXRfdHJhbnNmZXJzX21heHNpemUoY3Rs ciwgY3Rsci0+Y3VyX21zZywgY3Rsci0+bWF4X2RtYV9sZW4sCj4gPiA+ID4gKwkJCQkJICBHRlBf S0VSTkVMIHwgR0ZQX0RNQSk7Cj4gCj4gPiA+IFVtLCBzaG91bGRuJ3QgdGhpcyBiZSBpZmRlZidl ZCB0byBDT05GSUdfSEFTX0RNQT8KPiAKPiA+IE1heWJlLCBJIGRvbid0IGtub3cuIE1hcmsgZGlk bid0IG1lbnRpb25lZCBpdCB3aGVuIGhlIGNvbW1lbnRlZCBvbiBhCj4gPiBwcmV2aW91cyB2ZXJz aW9uIG9mIHRoaXMuIFNvbWUgaGF0ZSBpZmRlZidzIGFuZCB3YW50IHRvIGF2b2lkIHRoZW0sIHNv bWUKPiA+IGRvbid0Lgo+IAo+IEkgKnRoaW5rKiB3ZSBtYW5hZ2VkIHRvIGZpeCBhbGwgdGhlIGFy Y2hpdGVjdHVyZXMgdG8gYXQgbGVhc3Qgc3R1YiBvdXQKPiB0aGUgRE1BIGludGVyZmFjZXMsIGl0 J3Mgc3VjaCBhIHBvaW50bGVzcyB0aGluZyB0byBoYXZlIGNvbmRpdGlvbmFsIC0KPiBpdCByZWFs bHkgb25seSBtYWtlcyBhIGRpZmZlcmVuY2UgZm9yIGJ1aWxkIGNvdmVyYWdlLgoKTXkgcG9pbnQg d2FzIHRoYXQgdGhlIGNhbGwgdG8gc3BpX3NwbGl0X3RyYW5zZmVyc19tYXhzaXplKCkgc2hvdWxk bid0CmJlIGNhbGxlZCBvbiBub24tRE1BLWNhcGFibGUgcGxhdGZvcm1zIGluIHRoZSBmaXJzdCBw bGFjZSAoYmVjYXVzZSBpdCdzCkRNQS1zcGVjaWZpYykuCgoKPiBPbiBGcmksIEFwciAxMiwgMjAx OSBhdCAxMjowMzozNVBNICswMjAwLCBrZXJuZWxAbWFydGluLnNwZXJsLm9yZyB3cm90ZToKPiA+ IFRoZXJlIGlzIGEgcmVnaXN0ZXIgb2YgdGhlIFNQSSBjb250cm9sbGVyIHdoZXJlIHlvdSBoYXZl IHRvIGNvbmZpZ3VyZSB0aGUKPiA+IG51bWJlciBvZiBieXRlcyB0aGF0IGl0IHdpbGwgcmVxdWVz dCB2aWEgRE1BIChwcmltYXJpbHkgc3VwcG9ydCB0cmFuc2ZlcnMKPiA+IHRoYXQgYXJlIG5vdCBh IG11bHRpcGxlIG9mIDQgLSB0aGUgZGF0YSBpcyB0cmFuc2ZlcnJlZCBieSBETUEgYXMgd29yZHMp Lgo+ID4gU28gaXQgaXMgbm90IHJlYWxseSByZWxhdGVkIHRvIHRoZSBnZW5lcmFsIERNQSBpbXBs ZW1lbnRhdGlvbiBidXQgdG8gdGhlCj4gPiBETUEgKHJlcXVlc3QpIHN1cHBvcnQgb2YgdGhlIFNQ SSBjb250cm9sbGVyLgoKUmlnaHQsIGlmIHRoZSB0cmFuc2ZlciBpcyBub3QgYSBtdWx0aXBsZSBv ZiA0LCB0aGUgRE1BIGVuZ2luZSB3aWxsCndyaXRlIHVwIHRvIDMgc3VycGx1cyBieXRlcyB0byB0 aGUgVFggRklGTy4gIFRoZSBTUEkgY29udHJvbGxlcgprbm93cyBob3cgbWFueSBieXRlcyBpdCBo YXMgdG8gc2VuZCBiZWNhdXNlIHRoZSBsZW5ndGggaXMgc2V0IHZpYQppdHMgRExFTiByZWdpc3Rl ciBmaXJzdC4gIEludGVybmFsbHkgaXQgY291bnRzIGRvd24gdGhlIERMRU4gcmVnaXN0ZXIKdG8g emVybyBhbmQgdGhlbiBzdG9wcyBjbG9ja2luZyBvdXQgYnl0ZXMuICBUaGUgc3VycGx1cyBieXRl cyB3cml0dGVuCmJ5IHRoZSBETUEgZW5naW5lIGFyZSB0aHVzIGxlZnQgYXMgcmVzaWR1ZSBpbiB0 aGUgVFggRklGTyBhbmQgaGF2ZQp0byBiZSBmbHVzaGVkIGJ5IHNldHRpbmcgdGhlIENMRUFSX1RY IGJpdCBpbiB0aGUgQ1MgcmVnaXN0ZXIuCgpUaGFua3MsCgpMdWthcwpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRy aS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5v cmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWw=