From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King - ARM Linux Subject: Re: 4.16 OMAP serial transmit corruption? Date: Wed, 18 Apr 2018 10:59:50 +0100 Message-ID: <20180418095950.GN10990@n2100.armlinux.org.uk> References: <20180416151732.GU16141@n2100.armlinux.org.uk> <20180416154545.GA5671@atomide.com> <413b774b-d19f-3221-44d5-7992d3b8757f@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Vignesh R Cc: Tony Lindgren , Greg Kroah-Hartman , linux-omap@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: linux-omap@vger.kernel.org T24gV2VkLCBBcHIgMTgsIDIwMTggYXQgMDI6NDE6NDNQTSArMDUzMCwgVmlnbmVzaCBSIHdyb3Rl Ogo+IAo+IAo+IE9uIFR1ZXNkYXkgMTcgQXByaWwgMjAxOCAwMjo1MCBQTSwgVmlnbmVzaCBSIHdy b3RlOgo+ID4gCj4gPiAKPiA+IE9uIE1vbmRheSAxNiBBcHJpbCAyMDE4IDA5OjE1IFBNLCBUb255 IExpbmRncmVuIHdyb3RlOgo+ID4+ICogUnVzc2VsbCBLaW5nIC0gQVJNIExpbnV4IDxsaW51eEBh cm1saW51eC5vcmcudWs+IFsxODA0MTYgMTU6MTldOgo+ID4+PiBIaSwKPiA+Pj4KPiA+Pj4gSSdt IG5vdCBlbnRpcmVseSBzdXJlIHdoYXQncyBnb2luZyBvbiwgYnV0IEkgc2VlIGNvcnJ1cHRlZCBj aGFyYWN0ZXJzCj4gPj4+IHdpdGggdGhlIHNlcmlhbCBjb25zb2xlIG9uIHRoZSBPTUFQNDQzMCBT RFAgYm9hcmQuICBEdXJpbmcgYm9vdCwKPiA+Pj4gZXZlcnl0aGluZyBzZWVtcyBmaW5lLCB0aGUg cHJvYmxlbSBhcHBlYXJzIHRvIGJlIHVzZXJzcGFjZSBvdXRwdXQuCj4gPj4+Cj4gPj4+IEZvciBl eGFtcGxlLCBpZiBJIGVkaXQgYSBmaWxlLCB0aGVuIHF1aXQgdmk6Cj4gPj4+Cj4gPj4+IDpx4pag 4pagJeKWoOKWoELilqDilqBa4pagcm9vdEBvbWFwLTQ0MzBzZHA6fiMKPiA+Pgo+ID4+IEkgZG9u J3QgdGhpbmsgSSd2ZSBzZWVuIHRoYXQgb25lLiBXaGF0IEkndmUgc2VlbiBmZXcgdGltZXMgaXMK PiA+PiB0eXBpbmcgYSBrZXkgb24gdGhlIHNlcmlhbCBjb25zb2xlIGVjaG9pbmcgYmFjayB0aGUg cHJldmlvdXMKPiA+PiBjaGFyYWN0ZXIgdHlwZWQgd2hpbGUgdGhlIG5ldyBjaGFyYWN0ZXIgd29u J3QgZ2V0IGRpc3BsYXllZAo+ID4+IHVudGlsIGhpdHRpbmcga2V5Ym9hcmQgYWdhaW4uIE9ubHkg cmVib290aW5nIHRoZSBkZXZpY2Ugc2VlbXMKPiA+PiB0byBzb2x2ZSB0aGlzLiBUaGlzIGlzIHdp dGggNDQzMCBFUzIuMyByZXZpc2lvbi4KPiA+Pgo+ID4+IEkgd29uZGVyIGlmIHdlJ3JlIG1pc3Np bmcgc29tZSBwYXJ0cyBvZiBlcnJhdGEgaTIwMiBoYW5kbGluZwo+ID4+IGluIG9tYXBfODI1MF9t ZHIxX2VycmF0YXNldCgpPwo+ID4+Cj4gCj4gSSB3b25kZXIgaWYgdGhlIGV4dHJhIHJlYWQgb2Yg TURSMSByZWdpc3RlciBhdCB0aGUgYmVnaW5uaW5nIG9mCj4gb21hcF84MjUwX21kcjFfZXJyYXRh c2V0KCkgY29tcGFyZWQgdG8gb21hcC1zZXJpYWwgaXMgdGhlIGlzc3VlLgo+IGVycmF0YSBpMjAy IHNheXMgYWNjZXNzIHRvIE1EUjEgY2FuIGNhdXNlIGRhdGEgY29ycnVwdGlvbi4gCj4gQXNzdW1p bmcgYm90aCByZWFkcyBhbmQgd3JpdGVzIGNhbiBjYXVzZSBnbGl0Y2ggdGhlbiwgdGhhdCByZWFk Cj4gaXMgbm90IGZvbGxvd2luZyBhZHZpc29yeToKPiAKPiBJIGRvbid0IGhhdmUgU0RQIGJvYXJk IHNvLCBjb3VsZCB5b3UgdmVyaWZ5IGlmIGJlbG93IGRpZmYgaGVscHM6Cj4gCj4gCj4gZGlmZiAt LWdpdCBhL2RyaXZlcnMvdHR5L3NlcmlhbC84MjUwLzgyNTBfb21hcC5jIGIvZHJpdmVycy90dHkv c2VyaWFsLzgyNTAvODI1MF9vbWFwLmMKPiBpbmRleCA2YWFhODQzNTVmZDEuLjhhYjlkMGExYjFl YiAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL3R0eS9zZXJpYWwvODI1MC84MjUwX29tYXAuYwo+ICsr KyBiL2RyaXZlcnMvdHR5L3NlcmlhbC84MjUwLzgyNTBfb21hcC5jCj4gQEAgLTE2MywxMSArMTYz LDYgQEAgc3RhdGljIHZvaWQgb21hcF84MjUwX21kcjFfZXJyYXRhc2V0KHN0cnVjdCB1YXJ0Xzgy NTBfcG9ydCAqdXAsCj4gICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIHN0cnVj dCBvbWFwODI1MF9wcml2ICpwcml2KQo+ICB7Cj4gICAgICAgICB1OCB0aW1lb3V0ID0gMjU1Owo+ IC0gICAgICAgdTggb2xkX21kcjE7Cj4gLQo+IC0gICAgICAgb2xkX21kcjEgPSBzZXJpYWxfaW4o dXAsIFVBUlRfT01BUF9NRFIxKTsKPiAtICAgICAgIGlmIChvbGRfbWRyMSA9PSBwcml2LT5tZHIx KQo+IC0gICAgICAgICAgICAgICByZXR1cm47Cj4gIAo+ICAgICAgICAgc2VyaWFsX291dCh1cCwg VUFSVF9PTUFQX01EUjEsIHByaXYtPm1kcjEpOwo+ICAgICAgICAgdWRlbGF5KDIpOwoKVGhhdCBk b2Vzbid0IGFwcGVhciB0byBoZWxwLgoKTG9va2luZyBhdCB0aGUgYml0c3RyZWFtIGFuZCBjb21w YXJpbmcgd2hhdCBzaG91bGQgaGF2ZSBiZWVuIHNlbnQgd2l0aAp3aGF0IHdhcyBzZW50LCB0aGVy ZSBhcHBlYXJzIHRvIGJlIHNvbWUgY29ycmVsYXRpb24gYmV0d2VlbiB0aGUgdHdvLgpJdCBsb29r cyBsaWtlIHRoZSBGVERJIGlzIG5vdCBwcm9wZXJseSBzeW5jaHJvbmlzZWQgdG8gdGhlIGJpdHN0 cmVhbQpjb21pbmcgZnJvbSB0aGUgT01BUDQ0MzAuCgpTZXR0aW5nIHR3byBzdG9wIGJpdHMgb24g Ym90aCBlbmRzIChPTUFQNDQzMCBhbmQgRlRESSkgYXBwZWFycyB0bwppbXByb3ZlIHRoZSBpc3N1 ZSwgYnV0IG5vdCBjb21wbGV0ZWx5IHNvbHZlIGl0LgoKLS0gClJNSydzIFBhdGNoIHN5c3RlbTog aHR0cDovL3d3dy5hcm1saW51eC5vcmcudWsvZGV2ZWxvcGVyL3BhdGNoZXMvCkZUVEMgYnJvYWRi YW5kIGZvciAwLjhtaWxlIGxpbmUgaW4gc3VidXJiaWE6IHN5bmMgYXQgOC44TWJwcyBkb3duIDYz MGticHMgdXAKQWNjb3JkaW5nIHRvIHNwZWVkdGVzdC5uZXQ6IDguMjFNYnBzIGRvd24gNTEwa2Jw cyB1cAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGlu dXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRl YWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgt YXJtLWtlcm5lbAo=