From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= Subject: Re: [PATCH v2 1/2] spi: Split spi message into chunks of <65535 in the spi subsystem Date: Sun, 11 Mar 2018 14:33:32 +0100 Message-ID: References: <26064ccd4a898549fcdecbd5d0a3f32fb0a3ba55.1520691344.git.meghana.madhyastha@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 To: Meghana Madhyastha , Mark Brown , Daniel Vetter , linux-spi@vger.kernel.org, Sean Paul , dri-devel@lists.freedesktop.org Return-path: In-Reply-To: <26064ccd4a898549fcdecbd5d0a3f32fb0a3ba55.1520691344.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 CkRlbiAxMC4wMy4yMDE4IDE2LjUxLCBza3JldiBNZWdoYW5hIE1hZGh5YXN0aGE6Cj4gU3BsaXQg c3BpIG1lc3NhZ2VzIGludG8gY2h1bmtzIG9mIDw2NTUzNSBpbiB0aGUgc3BpIHN1YnN5c3RlbSBh bmQgcmVtb3ZlIHRoZSBtZXNzYWdlCj4gbGVuZ3RoIHdhcm5pbmcgaW4gYmNtMjgzNV9zcGlfY2Fu X2RtYS4gVGhpcyBpcyBzbyB0aGF0IHRoZSBtZXNzYWdlcyBjYW4gYmUgdHJhbnNmZXJyZWQKPiB2 aWEgZG1hIGFuZCB0aGF0IHRoZSB0aW55ZHJtIGRyaXZlcnMgbmVlZCBub3Qgc3BsaXQgaXQuCj4K PiBTaWduZWQtb2ZmLWJ5OiBNZWdoYW5hIE1hZGh5YXN0aGEgPG1lZ2hhbmEubWFkaHlhc3RoYUBn bWFpbC5jb20+Cj4gLS0tCj4gICBkcml2ZXJzL3NwaS9zcGktYmNtMjgzNS5jIHwgMTMgLS0tLS0t LS0tLS0tLQo+ICAgZHJpdmVycy9zcGkvc3BpLmMgICAgICAgICB8ICA4ICsrKysrKysrCj4gICAy IGZpbGVzIGNoYW5nZWQsIDggaW5zZXJ0aW9ucygrKSwgMTMgZGVsZXRpb25zKC0pCj4KPiBkaWZm IC0tZ2l0IGEvZHJpdmVycy9zcGkvc3BpLWJjbTI4MzUuYyBiL2RyaXZlcnMvc3BpL3NwaS1iY20y ODM1LmMKPiBpbmRleCBmMzVjYzEwNzcyZjYuLjBkY2M0NWYxNThiOCAxMDA2NDQKPiAtLS0gYS9k cml2ZXJzL3NwaS9zcGktYmNtMjgzNS5jCj4gKysrIGIvZHJpdmVycy9zcGkvc3BpLWJjbTI4MzUu Ywo+IEBAIC0zNjUsMTkgKzM2NSw2IEBAIHN0YXRpYyBib29sIGJjbTI4MzVfc3BpX2Nhbl9kbWEo c3RydWN0IHNwaV9tYXN0ZXIgKm1hc3RlciwKPiAgIAlpZiAodGZyLT5sZW4gPCBCQ00yODM1X1NQ SV9ETUFfTUlOX0xFTkdUSCkKPiAgIAkJcmV0dXJuIGZhbHNlOwo+ICAgCj4gLQkvKiBCQ00yODM1 X1NQSV9ETEVOIGhhcyBkZWZpbmVkIGEgbWF4IHRyYW5zZmVyIHNpemUgYXMKPiAtCSAqIDE2IGJp dCwgc28gbWF4IGlzIDY1NTM1Cj4gLQkgKiB3ZSBjYW4gcmV2aXNpdCB0aGlzIGJ5IHVzaW5nIGFu IGFsdGVybmF0aXZlIHRyYW5zZmVyCj4gLQkgKiBtZXRob2QgLSBpZGVhbGx5IHRoaXMgd291bGQg Z2V0IGRvbmUgd2l0aG91dCBhbnkgbW9yZQo+IC0JICogaW50ZXJhY3Rpb24uLi4KPiAtCSAqLwo+ IC0JaWYgKHRmci0+bGVuID4gNjU1MzUpIHsKPiAtCQlkZXZfd2Fybl9vbmNlKCZzcGktPmRldiwK PiAtCQkJICAgICAgInRyYW5zZmVyIHNpemUgb2YgJWQgdG9vIGJpZyBmb3IgZG1hLXRyYW5zZmVy XG4iLAo+IC0JCQkgICAgICB0ZnItPmxlbik7Cj4gLQkJcmV0dXJuIGZhbHNlOwo+IC0JfQo+IC0K PiAgIAkvKiBpZiB3ZSBydW4gcngvdHhfYnVmIHdpdGggd29yZCBhbGlnbmVkIGFkZHJlc3NlcyB0 aGVuIHdlIGFyZSBPSyAqLwo+ICAgCWlmICgoKChzaXplX3QpdGZyLT5yeF9idWYgJiAzKSA9PSAw KSAmJgo+ICAgCSAgICAoKChzaXplX3QpdGZyLT50eF9idWYgJiAzKSA9PSAwKSkKPiBkaWZmIC0t Z2l0IGEvZHJpdmVycy9zcGkvc3BpLmMgYi9kcml2ZXJzL3NwaS9zcGkuYwo+IGluZGV4IGIzM2E3 MjdhMDE1OC4uZThlMmMzNjZhOTNiIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvc3BpL3NwaS5jCj4g KysrIGIvZHJpdmVycy9zcGkvc3BpLmMKPiBAQCAtMTI0Miw2ICsxMjQyLDE0IEBAIHN0YXRpYyB2 b2lkIF9fc3BpX3B1bXBfbWVzc2FnZXMoc3RydWN0IHNwaV9jb250cm9sbGVyICpjdGxyLCBib29s IGluX2t0aHJlYWQpCj4gICAJdHJhY2Vfc3BpX21lc3NhZ2Vfc3RhcnQoY3Rsci0+Y3VyX21zZyk7 Cj4gICAKPiAgIAlpZiAoY3Rsci0+cHJlcGFyZV9tZXNzYWdlKSB7Cj4gKwkJZ2ZwX3QgZ2ZwX2Zs YWdzID0gR0ZQX0tFUk5FTCB8IEdGUF9ETUE7Cj4gKwkJc2l6ZV90IG1heF90cmFuc2Zlcl9zaXpl ID0gMzIwMDA7CgpXaGF0IG51bWJlciBpcyB0aGlzPwoKQXMgR2VlcnQgc2F5cywgdGhpcyBzaG91 bGRuJ3QgYmUgaW4gdGhlIGNvcmUgYnV0IGluIHRoZSBkcml2ZXIgY2FsbGJhY2sKYmNtMjgzNV9z cGlfcHJlcGFyZV9tZXNzYWdlKCkuCgpOb3JhbGYuCgo+ICsJCXJldCA9IHNwaV9zcGxpdF90cmFu c2ZlcnNfbWF4c2l6ZShjdGxyLCBjdGxyLT5jdXJfbXNnLCBtYXhfdHJhbnNmZXJfc2l6ZSwgZ2Zw X2ZsYWdzKTsKPiArCQlpZiAocmV0KSB7Cj4gKwkJCWRldl9lcnIoJmN0bHItPmRldiwKPiArCQkJ CSJmYWlsZWQgdG8gc3BsaXQgbWVzc2FnZVxuIik7Cj4gKwkJCWdvdG8gb3V0Owo+ICsJCX0KPiAg IAkJcmV0ID0gY3Rsci0+cHJlcGFyZV9tZXNzYWdlKGN0bHIsIGN0bHItPmN1cl9tc2cpOwo+ICAg CQlpZiAocmV0KSB7Cj4gICAJCQlkZXZfZXJyKCZjdGxyLT5kZXYsICJmYWlsZWQgdG8gcHJlcGFy ZSBtZXNzYWdlOiAlZFxuIiwKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNr dG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2Ry aS1kZXZlbAo=