From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukas Wunner Subject: Re: [PATCH v2 1/2] drm/tinydrm: Remove chunk splitting in tinydrm_spi_transfer Date: Sun, 25 Feb 2018 18:03:42 +0100 Message-ID: <20180225170342.GB7348@wunner.de> References: <641c51d452648aba2fb2b0b707dc780970eaaf99.1519492575.git.meghana.madhyastha@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, Daniel Vetter , kernel@martin.sperl.org To: Meghana Madhyastha Return-path: Content-Disposition: inline In-Reply-To: <641c51d452648aba2fb2b0b707dc780970eaaf99.1519492575.git.meghana.madhyastha@gmail.com> 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 T24gU2F0LCBGZWIgMjQsIDIwMTggYXQgMDY6MTY6NDZQTSArMDAwMCwgTWVnaGFuYSBNYWRoeWFz dGhhIHdyb3RlOgo+IC1SZW1vdmUgY2h1bmsgc3BsaXR0aW5nIGluIHRpbnlkcm1fc3BpX3RyYW5z ZmVyIGluIHRpbnlkcm0taGVscGVycyBhcyBUaGUgc3BpIGNvcmUgd2lsbCBzcGxpdCBhIGJ1ZmZl ciBpbnRvIG1heF9kbWFfbGVuIGNodW5rcyBmb3IgdGhlCj4gIHNwaSBjb250cm9sbGVyIGRyaXZl ciB0byBoYW5kbGUuCj4gLVJlbW92ZSBhdXRvbWF0aWMgYnl0ZSBzd2FwcGluZyBpbiB0aW55ZHJt X3NwaV90cmFuc2ZlciBhcyBpdCBkb2Vzbid0IGhhdmUgdXNlcnMuCj4gLVJlbW92ZSB0aGUgdXBw ZXIgYm91bmQgY2hlY2sgb24gZG1hIHRyYW5zZmVyIGxlbmd0aCBpbiBiY20yODM1X3NwaV9jYW5f ZG1hKCkuCgpBRkFJQ1MgeW91IG5lZWQgdG8gcmV2ZXJzZSB0aGUgb3JkZXIgb2YgdGhlIHR3byBw YXRjaGVzLCBzbyB0aGF0IHRoZQpzcGxpdHRpbmcgaXMgYWRkZWQgdG8gc3BpLWJjbTI4MzUgYmVm b3JlIHlvdSByZW1vdmUgaXQgZnJvbSB0aGUgRFJNCmRyaXZlcnMuICBPdGhlcndpc2UgdGhlcmUn cyBubyBzcGxpdHRpbmcgYXQgYWxsIGluLWJldHdlZW4gdGhlIHBhdGNoZXMsCndoaWNoIG1heSBj YXVzZSBpc3N1ZXMgZm9yIHNvbWVvbmUgaGl0dGluZyB0aGlzIHBhdGNoIHdoZW4gYmlzZWN0aW5n LgoKSXQgd291bGQgYmUgZ29vZCBpZiB5b3UgY291bGQgZXhwbGFpbiB0aGUgcmF0aW9uYWxlIG9m IHRoZSBwYXRjaAoodGhlICJ3aHkiKSBpbiBtb3JlIGRldGFpbC4gIFlvdSd2ZSBwcm92aWRlZCB0 aGUgcmF0aW9uYWxlIGluIHRoZQpjb3ZlciBsZXR0ZXIgYnV0IHRoZSBjb3ZlciBsZXR0ZXIgaXNu J3QgcmVjb3JkZWQgaW4gdGhlIGdpdCBoaXN0b3J5LgpSaWdodCBub3cgdGhlIGNvbW1pdCBtZXNz YWdlIG9ubHkgc3VtbWFyaXplcyB0aGUgIndoYXQiLgoKQWxzbywgcGxlYXNlIHdyYXAgdGhlIGNv bW1pdCBtZXNzYWdlIGF0IDcyIGNoYXJzLgoKCj4gLS0tIGEvZHJpdmVycy9zcGkvc3BpLWJjbTI4 MzUuYwo+ICsrKyBiL2RyaXZlcnMvc3BpL3NwaS1iY20yODM1LmMKPiBAQCAtMzY1LDE5ICszNjUs NiBAQCBzdGF0aWMgYm9vbCBiY20yODM1X3NwaV9jYW5fZG1hKHN0cnVjdCBzcGlfbWFzdGVyICpt YXN0ZXIsCj4gIAlpZiAodGZyLT5sZW4gPCBCQ00yODM1X1NQSV9ETUFfTUlOX0xFTkdUSCkKPiAg CQlyZXR1cm4gZmFsc2U7Cj4gIAo+IC0JLyogQkNNMjgzNV9TUElfRExFTiBoYXMgZGVmaW5lZCBh IG1heCB0cmFuc2ZlciBzaXplIGFzCj4gLQkgKiAxNiBiaXQsIHNvIG1heCBpcyA2NTUzNQo+IC0J ICogd2UgY2FuIHJldmlzaXQgdGhpcyBieSB1c2luZyBhbiBhbHRlcm5hdGl2ZSB0cmFuc2Zlcgo+ IC0JICogbWV0aG9kIC0gaWRlYWxseSB0aGlzIHdvdWxkIGdldCBkb25lIHdpdGhvdXQgYW55IG1v cmUKPiAtCSAqIGludGVyYWN0aW9uLi4uCj4gLQkgKi8KPiAtCWlmICh0ZnItPmxlbiA+IDY1NTM1 KSB7Cj4gLQkJZGV2X3dhcm5fb25jZSgmc3BpLT5kZXYsCj4gLQkJCSAgICAgICJ0cmFuc2ZlciBz aXplIG9mICVkIHRvbyBiaWcgZm9yIGRtYS10cmFuc2ZlclxuIiwKPiAtCQkJICAgICAgdGZyLT5s ZW4pOwo+IC0JCXJldHVybiBmYWxzZTsKPiAtCX0KPiAtCj4gIAkvKiBpZiB3ZSBydW4gcngvdHhf YnVmIHdpdGggd29yZCBhbGlnbmVkIGFkZHJlc3NlcyB0aGVuIHdlIGFyZSBPSyAqLwo+ICAJaWYg KCgoKHNpemVfdCl0ZnItPnJ4X2J1ZiAmIDMpID09IDApICYmCj4gIAkgICAgKCgoc2l6ZV90KXRm ci0+dHhfYnVmICYgMykgPT0gMCkpCgpNb3ZlIHRoaXMgaHVuayB0byB0aGUgb3RoZXIgcGF0Y2gg c28gdGhhdCBpdCdzIHRvZ2V0aGVyIHdpdGggdGhlCmNoYW5nZXMgdGhhdCByZW1vdmUgdGhlIDY1 NTM1IGxpbWl0YXRpb24uICBJdCB3b3VsZCBwcm9iYWJseSBnb29kCnRvIHJldGFpbiBhIHBvcnRp b24gb2YgdGhlIGNvbW1lbnQgdG8gZXhwbGFpbiB3aHkgdGhlIHNwbGl0dGluZyBpcwpuZWNlc3Nh cnkuCgoKPiBAQCAtNDYxLDcgKzQ0OCw3IEBAIHN0YXRpYyB2b2lkIGJjbTI4MzVfZG1hX2luaXQo c3RydWN0IHNwaV9tYXN0ZXIgKm1hc3Rlciwgc3RydWN0IGRldmljZSAqZGV2KQo+ICAKPiAgCS8q IGFsbCB3ZW50IHdlbGwsIHNvIHNldCBjYW5fZG1hICovCj4gIAltYXN0ZXItPmNhbl9kbWEgPSBi Y20yODM1X3NwaV9jYW5fZG1hOwo+IC0JbWFzdGVyLT5tYXhfZG1hX2xlbiA9IDY1NTM1OyAvKiBs aW1pdGF0aW9uIGJ5IEJDTTI4MzVfU1BJX0RMRU4gKi8KPiArCW1hc3Rlci0+bWF4X2RtYV9sZW4g PSA2NTUyODsgLyogbGltaXRhdGlvbiBieSBCQ00yODM1X1NQSV9ETEVOICovCgpTcHVyaW91cyB1 bmV4cGxhaW5lZCBjaGFuZ2UuCgpUaGFua3MsCgpMdWthcwpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZl bEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFp bG1hbi9saXN0aW5mby9kcmktZGV2ZWwK