From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relmlor3.renesas.com ([210.160.252.173]:46819 "EHLO relmlie2.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751448AbeFGFhq (ORCPT ); Thu, 7 Jun 2018 01:37:46 -0400 From: Yoshihiro Shimoda To: Geert Uytterhoeven CC: Wolfram Sang , "linux-i2c@vger.kernel.org" , "linux-renesas-soc@vger.kernel.org" , Hiromitsu Yamasaki Subject: RE: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3 Date: Thu, 7 Jun 2018 05:36:10 +0000 Message-ID: References: <20180529105847.15663-1-wsa+renesas@sang-engineering.com> <20180529105847.15663-2-wsa+renesas@sang-engineering.com> In-Reply-To: Content-Language: ja-JP Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: SGkgR2VlcnQtc2FuLA0KDQo+IEZyb206IFlvc2hpaGlybyBTaGltb2RhLCBTZW50OiBUaHVyc2Rh eSwgTWF5IDMxLCAyMDE4IDY6MTIgUE0NCj4gDQo+IEhpIEdlZXJ0LXNhbiwgV29sZnJhbS1zYW4s DQo+IA0KPiA+IEZyb206IEdlZXJ0IFV5dHRlcmhvZXZlbiwgU2VudDogVGh1cnNkYXksIE1heSAz MSwgMjAxOCA1OjQ1IFBNDQo+ID4NCj4gPiBIaSBTaGltb2RhLXNhbiwNCj4gPg0KPiA+IE9uIFdl ZCwgTWF5IDMwLCAyMDE4IGF0IDEwOjM1IEFNLCBZb3NoaWhpcm8gU2hpbW9kYQ0KPiA+IDx5b3No aWhpcm8uc2hpbW9kYS51aEByZW5lc2FzLmNvbT4gd3JvdGU6DQo+ID4gPj4gRnJvbTogV29sZnJh bSBTYW5nLCBTZW50OiBUdWVzZGF5LCBNYXkgMjksIDIwMTggNzo1OSBQTQ0KPiA+ID4+IFN1Ympl Y3Q6IFtSRkMgUEFUQ0ggMS8xXSBpMmM6IHJjYXI6IGhhbmRsZSBSWERNQSBIVyBidWcgb24gR2Vu Mw0KPiA+ID4NCj4gPiA+IElmIHBvc3NpYmxlLCBJJ2QgbGlrZSB0byByZXBsYWNlICJidWciIHdp dGggInNwZWNpZmljYXRpb24iIG9yIG90aGVyIHdvcmRzIDopDQo+ID4gPg0KPiA+ID4gPHNuaXA+ DQo+ID4gPj4gQEAgLTc0Myw2ICs3NTMsMTYgQEAgc3RhdGljIGludCByY2FyX2kyY19tYXN0ZXJf eGZlcihzdHJ1Y3QgaTJjX2FkYXB0ZXIgKmFkYXAsDQo+ID4gPj4NCj4gPiA+PiAgICAgICBwbV9y dW50aW1lX2dldF9zeW5jKGRldik7DQo+ID4gPj4NCj4gPiA+PiArICAgICAvKiBHZW4zIGhhcyBh IEhXIGJ1ZyB3aGljaCBuZWVkcyBhIHJlc2V0IGJlZm9yZSBhbGxvd2luZyBSWCBETUEgb25jZSAq Lw0KPiA+ID4+ICsgICAgIGlmIChwcml2LT5kZXZ0eXBlID09IEkyQ19SQ0FSX0dFTjMpIHsNCj4g PiA+PiArICAgICAgICAgICAgIHByaXYtPmZsYWdzIHw9IElEX1BfTk9fUlhETUE7DQo+ID4gPj4g KyAgICAgICAgICAgICBpZiAoIUlTX0VSUihwcml2LT5yc3RjKSkgew0KPiA+ID4+ICsgICAgICAg ICAgICAgICAgICAgICByZXQgPSByZXNldF9jb250cm9sX3Jlc2V0KHByaXYtPnJzdGMpOw0KPiA+ ID4NCj4gPiA+IEFjY29yZGluZyB0byB0aGUgZGF0YXNoZWV0IFJldi4xLjAwIHBhZ2UgNTctNjks IHdlIHNob3VsZCBkbzoNCj4gPiA+ICAgICAgICAgcmVzZXRfY29udHJvbF9hc3NlcnQoKTsNCj4g PiA+ICAgICAgICAgdWRlbGF5KDEpOw0KPiA+ID4gICAgICAgICByZXNldF9jb250cm9sX2RlYXNz ZXJ0KCk7DQo+ID4gPiAgICAgICAgIHdoaWxlIChyZXNldF9jb250cm9sX3N0YXR1cygpKQ0KPiA+ ID4gICAgICAgICAgICAgICAgIDsNCj4gPiA+IGluc3RlYWQgb2YgcmVzZXRfY29udHJvbF9yZXNl dCgpLCBJIHRoaW5rLg0KPiA+DQo+ID4gVGhlIGkyYy1zcGVjaWZpYyBwcm9jZWR1cmUgZG9jdW1l bnRlZCBhdCBwYWdlIDU3LTY5IHRodXMgZGlmZmVycyBmcm9tDQo+ID4gdGhlIGdlbmVyaWMgb25l IGF0IHBhZ2UgOEEtNTgsIHdoaWNoIGlzIHdoYXQgY3BnX21zc3JfcmVzZXQoKSBpbXBsZW1lbnRz Lg0KPiA+DQo+ID4gVGhlIGxhdHRlciB3YWl0cyAzNcK1cyBpbnN0ZWFkIG9mIDHCtXMsIHNvIHRo YXQgc2hvdWxkIGJlIHNhZmUuDQo+ID4gQnV0IGl0IGRvZXNuJ3QgY2hlY2sgdGhlIHN0YXR1cyBi aXQuIElzIHRoZSBsb25nZXIgZGVsYXkgc3VmZmljaWVudCwgb3Igc2hvdWxkDQo+ID4gYSBjaGVj ayBwb2xsaW5nIHRoZSBzdGF0dXMgYml0IGJlIGFkZGVkIHRvIGNwZ19tc3NyX3Jlc2V0KCk/DQo+ IA0KPiBUaGFuayB5b3UgZm9yIHRoZSBwb2ludGVkIG91dC4NCj4gSSBhZ3JlZSB3ZSBzaG91bGQg d2FpdCAzNXVzIGZvciBzYWZlLg0KPiBCdXQsIGFueXdheSBJJ2xsIGFzayBIVyB0ZWFtIGFib3V0 IHRoaXMgY29udHJhZGljdGlvbiBhbmQgcmVhbGx5IG5lZWQgcG9sbGluZyB0aGUgc3RhdHVzLg0K DQpJIGdvdCBpbmZvcm1hdGlvbiBhYm91dCB0aGlzIHRvcGljLg0KDQo8IEluIENQRyAvIE1TU1Ig cG9pbnQgb2YgdmlldyA+DQogLSBUaGlzIG5lZWRzIDM1IHVzZWMgd2FpdCB3aGlsZSBhc3NlcnRp bmcuDQogLSBBZnRlciBkZWFzc2VydGVkIGEgcmVzZXQsIG5vIHdhaXQgbmVlZHMuDQogIC0gSW4g b3RoZXIgd29yZHMsIHRoZXJlIGlzIGVhY2ggaGFyZHdhcmUgSVAgZGVwZW5kZW5jZS4NCg0KPCBJ biBJMkMgcG9pbnQgb2YgdmlldyA+DQogLSBBZnRlciBkZWFzc2VydGVkIHRoZSByZXNldCwgdGhp cyBuZWVzIFNSQ1IgcmVnaXN0ZXIgcG9sbGluZy4NCg0KU28sIEkgZG9uJ3QgdGhpbmsgY3BnX21z c3JfcmVzZXQoKSBjaGVja3MgdGhlIHN0YXR1cyBiaXQgYWZ0ZXIgZGVhc3NlcnRlZCBhIHJlc2V0 Lg0KQnV0LCB3aGF0IGRvIHlvdSB0aGluaz8NCg0KQmVzdCByZWdhcmRzLA0KWW9zaGloaXJvIFNo aW1vZGENCg0K