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: usb: Don't disable Latency tolerance Messaging (LTM) before port reset From: Mathias Nyman Message-Id: <726d7901-a8ee-17bb-e6b1-6de43dcb2292@linux.intel.com> Date: Fri, 2 Mar 2018 11:27:07 +0200 To: Alan Stern Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org List-ID: T24gMDEuMDMuMjAxOCAyMDowNywgQWxhbiBTdGVybiB3cm90ZToKPiBPbiBUaHUsIDEgTWFyIDIw MTgsIE1hdGhpYXMgTnltYW4gd3JvdGU6Cj4gCj4+IERpc2FiaW5nIExhdGVuY3kgVG9sZXJhbmNl IE1lc3NhZ2luZyBiZWZvcmUgcG9ydCByZXNldCBpcyB1bm5lY2Vzc2FyeS4KPj4gTFRNIGlzIGF1 dG9tYXRpY2FsbHkgZGlzYWJsZWQgYXQgcG9ydCByZXNldC4KPj4KPj4gSWYgaG9zdCBjYW4ndCBj b21tdW5pY2F0ZSB3aXRoIHRoZSBkZXZpY2UgdGhlIExUTSBtZXNzYWdlIHdpbGwgZmFpbCwgYW5k Cj4+IHRoZSBodWIgZHJpdmVyIHdpbGwgdW5uZWNlc3NhcmlseSBkbyBhIGxvZ2ljYWwgZGlzY29u bmVjdC4KPj4gQnJva2VuIGNvbW11bmljYXRpb24gaXMgb2Z0ZXIgdGhlIHJlYXNvbiBmb3IgYSBy ZXNldCBpbiB0aGUgZmlyc3QgcGxhY2UuCj4+Cj4+IEFkZGl0aW9uYWxseSB3ZSBjYW4ndCBndWFy YW50ZWUgZGV2aWNlIGlzIGluIGEgY29uZmlndXJlZCBzdGF0ZSwKPj4gZXBlY2lhbGx5IGluIHJl c2V0LXJlc3VtZSBjYXNlIHdoZW4gcm9vdCBodWIgbG9zdCBwb3dlci4KPj4gTFRNIGNhbid0IGJl IG1vZGlmaWVkIHVubGVzcyBkZXZpY2UgaXMgaW4gYSBjb25maWd1cmVkIHN0YXRlLgo+Pgo+PiBK dXN0IHJlbW92ZSBMVE0gZGlzYWJsaW5nIGJlZm9yZSBwb3J0IHJlc2V0Lgo+IAo+IFRoYXQgZGVm aW5pdGVseSBzb3VuZHMgbGlrZSB0aGUgcmlnaHQgYXBwcm9hY2guCj4gCj4+IERldGFpbHMgYWJv dXQgTFRNIGFuZCBwb3J0IHJlc2V0IGluIFVTQiAzIHNwZWNpZmljYXRpb246Cj4+Cj4+IFVTQiAz IHNwZWMgc2VjdGlvbiA5LjQuNQo+PiAiVGhlIExUTSBFbmFibGUgZmllbGQgY2FuIGJlIG1vZGlm aWVkIGJ5IHRoZSBTZXRGZWF0dXJlKCkgYW5kCj4+IENsZWFyRmVhdHVyZSgpIHJlcXVlc3RzIHVz aW5nIHRoZSBMVE1fRU5BQkxFIGZlYXR1cmUgc2VsZWN0b3IuCj4+IFRoaXMgZmllbGQgaXMgcmVz ZXQgdG8gemVybyB3aGVuIHRoZSBkZXZpY2UgaXMgcmVzZXQuIgo+Pgo+PiBVU0IgMyBzcGVjIHNl Y3Rpb24gOS40LjEKPj4gIlRoZSBkZXZpY2Ugc2hhbGwgcHJvY2VzcyBhIENsZWFyIEZlYXR1cmUg KFUxX0VuYWJsZSBvciBVMl9FbmFibGUgb3IKPj4gTFRNX0VuYWJsZSkgb25seSBpZiB0aGUgZGV2 aWNlIGlzIGluIHRoZSBjb25maWd1cmVkIHN0YXRlLiIKPj4KPj4gU2lnbmVkLW9mZi1ieTogTWF0 aGlhcyBOeW1hbiA8bWF0aGlhcy5ueW1hbkBsaW51eC5pbnRlbC5jb20+Cj4gCj4gQWNrZWQtYnk6 IEFsYW4gU3Rlcm4gPHN0ZXJuQHJvd2xhbmQuaGFydmFyZC5lZHU+Cj4gCj4+IC0tLQo+PiAgIGRy aXZlcnMvdXNiL2NvcmUvaHViLmMgfCAxMiArKystLS0tLS0tLS0KPj4gICAxIGZpbGUgY2hhbmdl ZCwgMyBpbnNlcnRpb25zKCspLCA5IGRlbGV0aW9ucygtKQo+Pgo+PiBkaWZmIC0tZ2l0IGEvZHJp dmVycy91c2IvY29yZS9odWIuYyBiL2RyaXZlcnMvdXNiL2NvcmUvaHViLmMKPj4gaW5kZXggYzVj MWY2Yy4uYWM3YmFiNyAxMDA2NDQKPj4gLS0tIGEvZHJpdmVycy91c2IvY29yZS9odWIuYwo+PiAr KysgYi9kcml2ZXJzL3VzYi9jb3JlL2h1Yi5jCj4+IEBAIC01NTA1LDIxICs1NTA1LDE1IEBAIHN0 YXRpYyBpbnQgdXNiX3Jlc2V0X2FuZF92ZXJpZnlfZGV2aWNlKHN0cnVjdCB1c2JfZGV2aWNlICp1 ZGV2KQo+PiAgIAlpZiAodWRldi0+dXNiMl9od19scG1fZW5hYmxlZCA9PSAxKQo+PiAgIAkJdXNi X3NldF91c2IyX2hhcmR3YXJlX2xwbSh1ZGV2LCAwKTsKPj4gICAKPj4gLQkvKiBEaXNhYmxlIExQ TSBhbmQgTFRNIHdoaWxlIHdlIHJlc2V0IHRoZSBkZXZpY2UgYW5kIHJlaW5zdGFsbCB0aGUgYWx0 Cj4+IC0JICogc2V0dGluZ3MuICBEZXZpY2UtaW5pdGlhdGVkIExQTSBzZXR0aW5ncywgYW5kIHN5 c3RlbSBleGl0IGxhdGVuY3kKPj4gLQkgKiBzZXR0aW5ncyBhcmUgY2xlYXJlZCB3aGVuIHRoZSBk ZXZpY2UgaXMgcmVzZXQsIHNvIHdlIGhhdmUgdG8gc2V0Cj4+IC0JICogdGhlbSB1cCBhZ2Fpbi4K Pj4gKwkvKiBEaXNhYmxlIExQTSB3aGlsZSB3ZSByZXNldCB0aGUgZGV2aWNlIGFuZCByZWluc3Rh bGwgdGhlIGFsdCBzZXR0aW5ncy4KPj4gKwkgKiBEZXZpY2UtaW5pdGlhdGVkIExQTSwgYW5kIHN5 c3RlbSBleGl0IGxhdGVuY3kgc2V0dGluZ3MgYXJlIGNsZWFyZWQKPj4gKwkgKiB3aGVuIHRoZSBk ZXZpY2UgaXMgcmVzZXQsIHNvIHdlIGhhdmUgdG8gc2V0IHRoZW0gdXAgYWdhaW4uCj4+ICAgCSAq Lwo+IAo+IEluIHRoZW9yeSwgc2luY2UgeW91J3JlIGNoYW5naW5nIHRoaXMgY29tbWVudCBhbnl3 YXksIGl0IGNvdWxkIGJlCj4gcmVmb3JtYXR0ZWQgaW50byB0aGUgbW9yZSBjb21tb25seSBhY2Nl cHRlZCBmb3JtOgo+IAo+IAkvKgo+IAkgKiBibGFoLCBibGFoLCBibGFoCj4gCSAqIGJsYWgsIGJs YWgsIGJsYWgKPiAJICovCj4gCj4gQnV0IGl0J3Mgbm90IGEgYmlnIGRlYWwuCgpHb29kIHBvaW50 LgpJJ20gdHJ5aW5nIHRvIGdldCByaWQgb2YgTFBNIGRpc2FibGUgYmVmb3JlIHJlc2V0IGFzIHdl bGwsIHRoZW4gd2UgY2FuIGdldCBvZiB0aGUgd2hvbGUgY29tbWVudC4KanVzdCBuZWVkIHRvIGRv IHNvbWUgTFBNIHRlc3RpbmcgZmlyc3QuCiAgCi1NYXRoaWFzCi0tLQpUbyB1bnN1YnNjcmliZSBm cm9tIHRoaXMgbGlzdDogc2VuZCB0aGUgbGluZSAidW5zdWJzY3JpYmUgbGludXgtdXNiIiBpbgp0 aGUgYm9keSBvZiBhIG1lc3NhZ2UgdG8gbWFqb3Jkb21vQHZnZXIua2VybmVsLm9yZwpNb3JlIG1h am9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdlci5rZXJuZWwub3JnL21ham9yZG9tby1pbmZvLmh0 bWwK