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Mon, 27 Mar 2023 08:11:13 -0700 (PDT) From: Sergey Organov To: Stefan Wahren Cc: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= , Fabio Estevam , Ilpo =?utf-8?Q?J=C3=A4rvinen?= , Stefan Wahren , linux-serial@vger.kernel.org, Greg Kroah-Hartman , Sascha Hauer , NXP Linux Team , Pengutronix Kernel Team , Shawn Guo , Jiri Slaby , Tomasz =?utf-8?Q?Mo=C5=84?= , Linux ARM Subject: Re: Regression: serial: imx: overrun errors on debug UART References: <2c29454b-9369-4360-8eb4-c151f59460cb@i2se.com> <9e22f237-f3ee-0415-9e6b-89a137769b8f@i2se.com> <5d59dec6-9f6f-7b20-1221-f57c94b29cca@i2se.com> <20230325151100.mskydt3hwbnspqp4@pengutronix.de> Date: Mon, 27 Mar 2023 18:11:12 +0300 In-Reply-To: (Stefan Wahren's message of "Mon, 27 Mar 2023 16:42:23 +0200") Message-ID: <87mt3ynsa7.fsf@osv.gnss.ru> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230327_081119_414416_EC09B3EB X-CRM114-Status: GOOD ( 21.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org U3RlZmFuIFdhaHJlbiA8c3RlZmFuLndhaHJlbkBpMnNlLmNvbT4gd3JpdGVzOgoKPiBIaSwKPgo+ IEFtIDI1LjAzLjIzIHVtIDE2OjExIHNjaHJpZWIgVXdlIEtsZWluZS1Lw7ZuaWc6CgpbLi4uXQoK PiB0b2RheSBpIGhhZCB0aW1lIHRvIGRvIHNvbWUgdGVzdGluZy4gQXQgZmlyc3QgaSB0ZXN0ZWQg d2l0aCBkaWZmZXJlbnQgUlhUTF9ERUZBVUxUIHZhbHVlcy4KPgo+IDEgTm8gb3ZlcnJ1bgo+IDIg Tm8gb3ZlcnJ1bgo+IDQgTm8gb3ZlcnJ1bgo+IDggT3ZlcnJ1bnMKPgo+IEFmdGVyIHRoYXQgaSBs b29rIGF0IHRoZSAjIGVjaG8gMCA+IC9wcm9jL3N5cy9rZXJuZWwvcHJpbnRrIGFwcHJvYWNoLAo+ IGJ1dCB0aGlzIGRpZG4ndCBjaGFuZ2UgYW55dGhpbmcuIFRoZSBrZXJuZWwgaXMgdXN1YWxseSBz aWxlbnQgYWJvdXQKPiBsb2cgbWVzc2FnZSBhZnRlciBib290IGFuZCB0aGUgY29uc29sZSB3b3Jr cyBzdGlsbCB3aXRoIGVjaG8uCj4gRW5mb3JjaW5nIHNvbWUgZHJpdmVyIHRvIGNhbGwgcHJpbnRr IHBlcmlvZGljYWxseSB3b3VsZCBtYWtlIHRoZQo+IGNvbnNvbGUgdW51c3VhYmxlLgoKQXMgeW91 IGZpZ3VyZWQgdGhhdCBwcmludGsoKSBpcyBub3QgdGhlIGNhdXNlLCBpdCBtdXN0IGJlIHNvbWV0 aGluZyBlbHNlCnRoYXQgY2F1c2VzIG92ZXJydW5zLCBzbyB0aGVyZSBpcyBubyBuZWVkIHRvIGNo ZWNrIHByaW50ayBjYXNlIGZ1cnRoZXIuCgo+Cj4gRmluYWxseSBpIHRyaWVkIHRvIGRpc2FibGVk IHRoZSBzcGluX2xvY2sgaW4gaW14X3VhcnRfY29uc29sZV93cml0ZToKPgo+IGRpZmYgLS1naXQg YS9kcml2ZXJzL3R0eS9zZXJpYWwvaW14LmMgYi9kcml2ZXJzL3R0eS9zZXJpYWwvaW14LmMKPiBp bmRleCBmMDdjNGY5ZmYxM2MuLmMzNDI1NTlmZjFhMiAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL3R0 eS9zZXJpYWwvaW14LmMKPiArKysgYi9kcml2ZXJzL3R0eS9zZXJpYWwvaW14LmMKPiBAQCAtMjAw NywxNCArMjAwNywxMiBAQCBpbXhfdWFydF9jb25zb2xlX3dyaXRlKHN0cnVjdCBjb25zb2xlICpj bywgY29uc3QgY2hhciAqcywgdW5zaWduZWQgaW50IGNvdW50KQo+ICAJc3RydWN0IGlteF9wb3J0 X3VjcnMgb2xkX3VjcjsKPiAgCXVuc2lnbmVkIGxvbmcgZmxhZ3M7Cj4gIAl1bnNpZ25lZCBpbnQg dWNyMTsKPiAtCWludCBsb2NrZWQgPSAxOwo+ICsJaW50IGxvY2tlZCA9IDA7Cj4KPiAgCWlmIChz cG9ydC0+cG9ydC5zeXNycSkKPiAgCQlsb2NrZWQgPSAwOwo+ICAJZWxzZSBpZiAob29wc19pbl9w cm9ncmVzcykKPiAgCQlsb2NrZWQgPSBzcGluX3RyeWxvY2tfaXJxc2F2ZSgmc3BvcnQtPnBvcnQu bG9jaywgZmxhZ3MpOwo+IC0JZWxzZQo+IC0JCXNwaW5fbG9ja19pcnFzYXZlKCZzcG9ydC0+cG9y dC5sb2NrLCBmbGFncyk7Cj4KPiAgCS8qCj4gIAkgKglGaXJzdCwgc2F2ZSBVQ1IxLzIvMyBhbmQg dGhlbiBkaXNhYmxlIGludGVycnVwdHMKPgo+IEJ1dCB0aGUgb3ZlcnJ1bnMgc3RpbGwgb2NjdXJl ZC4gSXMgdGhpcyBiZWNhdXNlIHRoZSBzZXJpYWwgY29yZQo+IGFscmVhZHkgaGVsZHMgYSBsb2Nr PwoKVGhpcyBwcm9iYWJseSBpc24ndCBldmVuIGNhbGxlZCB3aGVuIHRoZXJlIGlzIG5vIHByaW50 aygpIG91dHB1dCwgYXMKdXNlci1zcGFjZSB3cml0ZXMgdG8gL2Rldi9jb25zb2xlIGFyZSByYXRo ZXIgcGVyZm9ybWVkIHRocm91Z2ggcmVndWxhcgpnZW5lcmljIGNvZGUsIEFGQUlLLgoKQmVzdCBy ZWdhcmRzLAotLSBTZXJnZXkgT3JnYW5vdgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJt LWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21h aWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=