From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v2] USB: serial: ftdi_sio: Use rounding instead of truncating when calculating baud rate divisors. From: Johan Hovold Message-Id: <20181123085356.GO19900@localhost> Date: Fri, 23 Nov 2018 09:53:56 +0100 To: Nikolaj Fogh Cc: Johan Hovold , linux-usb@vger.kernel.org List-ID: T24gVGh1LCBOb3YgMjIsIDIwMTggYXQgMDk6Mjc6NDZQTSArMDEwMCwgTmlrb2xhaiBGb2doIHdy b3RlOgo+IEltcHJvdmUgYmF1ZC1yYXRlIGdlbmVyYXRpb24gYnkgdXNpbmcgcm91bmRpbmctdG8t Y2xvc2VzdCBpbnN0ZWFkIG9mCj4gdHJ1bmNhdGlvbiBpbiBkaXZpc29yIGNhbGN1bGF0aW9uLgo+ IAo+IFJlc3VsdHMgaGF2ZSBiZWVuIHZlcmlmaWVkIGJ5IGxvZ2ljIGFuYWx5emVyIG9uIGFuIEZU MjMyUlQgKDIzMkJNKSBjaGlwLgo+IFRoZSBmb2xsb3dpbmcgdGFibGUgc2hvd3MgdGhlIHdhbnRl ZCBiYXVkIHJhdGUsIHRoZSBiYXVkIHJhdGUgb2J0YWluZWQKPiB3aXRoIHRoZSBvbGQgbWV0aG9k ICh0cnVuY2F0aW9uKSwgd2l0aCB0aGUgbmV3IG1ldGhvZCAocm91bmRpbmcpIGFuZCB0aGUKPiBi YXVkIHJhdGUgZ2VuZXJhdGVkIGJ5IHRoZSB3aW5kb3dzIDEwIGRyaXZlci4gVGhlIG51bWJlcnMg aW4gcGFyZW50aGVzZXMKPiBpcyB0aGUgZXJyb3IuCj4gCj4gKy0gV2FudGVkIC0tKy0tLS0tLSBP bGQgLS0tLS0tLSstLS0tLS0gTmV3IC0tLS0tLS0rLS0tLS0tIFdpbiAtLS0tLS0tKwo+IHwgwqAg OTYwMMKgIMKgIHwgwqAgOTYwMMKgICgwLjAwJSnCoCB8wqDCoCA5NjA0wqAgKDAuMDUlKcKgIHzC oMKgIDk2MDUgKDAuMDUlKcKgIHwKPiB8IMKgIDE5MjAwIMKgIHwgwqAgMTkyMDAgKDAuMDAlKcKg IHzCoMKgIDE5MTk5ICgwLjAxJSnCoCB8wqDCoCAxOTE5OCAoMC4wMSUpwqAgfAo+IHwgwqAgMzg0 MDAgwqAgfCDCoCAzODM5NSAoMC4wMSUpwqAgfMKgwqAgMzg0MzEgKDAuMDglKcKgIHzCoMKgIDM4 Mzk0ICgwLjAyJSnCoCB8Cj4gfCDCoCA1NzYwMCDCoCB8IMKgIDU3NzI1ICgwLjIyJSnCoCB8wqDC oCA1NzU0MCAoMC4xMCUpwqAgfMKgwqAgNTc2NzMgKDAuMTMlKcKgIHwKPiB8wqAgMTE1MjAwIMKg IHzCoCAxMTUzMDcgKDAuMDklKcKgIHzCoCAxMTUzMzAgKDAuMTElKcKgIHzCoCAxMTUzMjAgKDAu MTAlKcKgIHwKPiB8wqAgOTIxNjAwIMKgIHzCoCA5MTk5NjMgKDAuMTglKcKgIHzCoCA5MjAzODYg KDAuMTMlKcKgIHzCoCA5MjA4MTAgKDAuMDklKcKgIHwKPiB8wqAgOTYxMjAwIMKgIHzCoCA5OTY1 MTIgKDMuNjclKcKgIHzCoCA5NTY0ODAgKDAuNDklKcKgIHzCoCA5NTY5MzcgKDAuNDQlKcKgIHwK PiArLS0tLS0tLS0tLS0rLS0tLS0tLS0tLS0tLS0tLS0tKy0tLS0tLS0tLS0tLS0tLS0tLSstLS0t LS0tLS0tLS0tLS0tLS0rCj4gCj4gVGhlIGVycm9yIGR1ZSB0byBub2lzZSBpbiB0aGUgbWVhc3Vy ZW1lbnRzIGlzIGluIHRoZSBvcmRlciBvZiBhIGZldwo+IHRlbnRocyBvZiBhICUuIEFzIGNhbiBi ZSBzZWVuLCB0aGUgYmF1ZCByYXRlIGZvciA5NjEyMDAgaXMgc2lnbmlmaWNhbnRseQo+IGltcHJv dmVkIGZvciBzb21lIHJhdGVzLCBhbmQgY29ycmVzcG9uZHMgdG8gdGhlIG91dHB1dCBnaXZlbiBi eSB0aGUKPiB3aW5kb3dzIGRyaXZlci4KPiAKPiBUaGUgdGhlb3JldGljYWwgYmF1ZCByYXRlIGhh cyBiZWVuIGNhbGN1bGF0ZWQgZm9yIGFsbCBiYXVkIHJhdGVzIGZyb20gMQo+IHRvIDNNLCBhbmQg YXMgZXhwZWN0ZWQsIHRoZSBlcnJvciBpcyBjZW50ZXJlZCBhcm91bmQgMCwgd2l0aCBhIHRyaWFu Z2xlCj4gc2hhcGUgaW5zdGVhZCBvZiBhIHNhd3Rvb3RoLCBzbyB0aGUgbWF4aW11bSBlcnJvciBp cyBkZWNyZWFzZWQgdG8gaGFsZi4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBOaWtvbGFqIEZvZ2ggPG5p a29sYWpmb2doQGdtYWlsLmNvbT4KPiAKPiAtLS0KPiAgwqBkcml2ZXJzL3VzYi9zZXJpYWwvZnRk aV9zaW8uYyB8IDYgKysrLS0tCj4gIMKgMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwg MyBkZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy91c2Ivc2VyaWFsL2Z0ZGlf c2lvLmMgYi9kcml2ZXJzL3VzYi9zZXJpYWwvZnRkaV9zaW8uYwo+IGluZGV4IDYwOTE5OGQ5NTk0 Yy4uMGVkYmQzNDI3NTQ4IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvdXNiL3NlcmlhbC9mdGRpX3Np by5jCj4gKysrIGIvZHJpdmVycy91c2Ivc2VyaWFsL2Z0ZGlfc2lvLmMKPiBAQCAtMTEzMCw3ICsx MTMwLDcgQEAgc3RhdGljIHVuc2lnbmVkIHNob3J0IGludCAKPiBmdGRpXzIzMmFtX2JhdWRfYmFz ZV90b19kaXZpc29yKGludCBiYXVkLCBpbnQgYmFzZSkKPiAgwqB7Cj4gIMKgwqDCoMKgIHVuc2ln bmVkIHNob3J0IGludCBkaXZpc29yOwo+ICDCoMKgwqDCoCAvKiBkaXZpc29yIHNoaWZ0ZWQgMyBi aXRzIHRvIHRoZSBsZWZ0ICovCj4gLcKgwqDCoCBpbnQgZGl2aXNvcjMgPSBiYXNlIC8gMiAvIGJh dWQ7Cj4gK8KgwqDCoCBpbnQgZGl2aXNvcjMgPSBESVZfUk9VTkRfQ0xPU0VTVChiYXNlLCAyICog YmF1ZCk7Cj4gIMKgwqDCoMKgIGlmICgoZGl2aXNvcjMgJiAweDcpID09IDcpCj4gIMKgwqDCoMKg IMKgwqDCoCBkaXZpc29yMysrOyAvKiByb3VuZCB4LjcvOCB1cCB0byB4KzEgKi8KPiAgwqDCoMKg wqAgZGl2aXNvciA9IGRpdmlzb3IzID4+IDM7CgpUaGlzIHZlcnNpb24gdHVybmVkIG91dCB0byBi ZSB3aGl0ZS1zcGFjZSBkYW1hZ2VkIGJ5IGdtYWlsICg/KSB3aXRoIHRhYnMKcmVwbGFjZWQgYnkg c3BhY2VzLgoKSSBmaXhlZCBpdCB1cCBtYW51YWxseSwgYnV0IG5leHQgdGltZSB0cnkgc2VuZGlu ZyB0aGUgcGF0Y2ggdG8geW91cnNlbGYKYW5kIG1ha2Ugc3VyZSBjYW4gYXBwbHkgaXQgKGFuZC9v ciBydW4gY2hlY2twYXRjaCBvbiB0aGUgcmVzdWx0KS4KCkkgYWxzbyBzaG9ydGVuZWQgdGhlIHN1 bW1hcnkgZnVydGhlciBhbmQgZWRpdGVkIHRoZSBjb21taXQgbWVzc2FnZSB2ZXJ5CnNsaWdodGx5 LiBUaGUgcmVzdWx0IGNhbiBiZSBzZWVuIGhlcmUgKHNvb24pOgoKCWh0dHBzOi8vZ2l0Lmtlcm5l bC5vcmcvcHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L2pvaGFuL3VzYi1zZXJpYWwuZ2l0L2NvbW1p dC8/aD11c2ItbmV4dCZpZD02YWJkODM3MTA0YTNhOGUxY2RhNjRmYzRkNzY3NWY2YzNlY2U5ZDhi CgpBZ2FpbiwgdGhhbmtzIGZvciBmaXhpbmcgdGhpcy4KCkpvaGFuCg==