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 enable LPM if it's already enabled From: Mathias Nyman Message-Id: Date: Tue, 30 Oct 2018 16:24:08 +0200 To: Kai-Heng Feng , gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Alan Stern List-ID: T24gMzAuMTAuMjAxOCAwNzo1NCwgS2FpLUhlbmcgRmVuZyB3cm90ZToKPiBVU0IgQmx1ZXRvb3Ro IGNvbnRyb2xsZXIgUUNBIFJPTUUgKDBjZjM6ZTAwNykgc29tZXRpbWVzIHN0b3BzIHdvcmtpbmcK PiBhZnRlciBTMzoKPiBbIDE2NS4xMTA3NDJdIEJsdWV0b290aDogaGNpMDogdXNpbmcgTlZNIGZp bGU6IHFjYS9udm1fdXNiXzAwMDAwMzAyLmJpbgo+IFsgMTY4LjQzMjA2NV0gQmx1ZXRvb3RoOiBo Y2kwOiBGYWlsZWQgdG8gc2VuZCBib2R5IGF0IDQgb2YgMTk1MyAoLTExMCkKPiAKPiBBZnRlciBz b21lIGV4cGVyaW1lbnRzLCBJIGZvdW5kIHRoYXQgZGlzYWJsaW5nIExQTSBjYW4gd29ya2Fyb3Vu ZCB0aGUKPiBpc3N1ZS4KPiAKPiBPbiBzb21lIHBsYXRmb3JtcywgdGhlIFVTQiBwb3dlciBpcyBj dXQgZHVyaW5nIFMzLCBzbyB0aGUgZHJpdmVyIHVzZXMKPiByZXNldC1yZXN1bWUgdG8gcmVzdW1l IHRoZSBkZXZpY2UuIER1cmluZyBwb3J0IHJlc3VtZSwgTFBNIGdldHMgZW5hYmxlZAo+IHR3aWNl LCBieSB1c2JfcmVzZXRfYW5kX3ZlcmlmeV9kZXZpY2UoKSBhbmQgdXNiX3BvcnRfcmVzdW1lKCku Cj4gCj4gU28gbGV0J3MgZW5hYmxlIExQTSBmb3IganVzdCBvbmNlLCBhcyB0aGlzIHNvbHZlcyB0 aGUgaXNzdWUgZm9yIHRoZQo+IGRldmljZSBpbiBxdWVzdGlvbi4KPiAKPiBTaWduZWQtb2ZmLWJ5 OiBLYWktSGVuZyBGZW5nIDxrYWkuaGVuZy5mZW5nQGNhbm9uaWNhbC5jb20+Cj4gLS0tCj4gICBk cml2ZXJzL3VzYi9jb3JlL2RyaXZlci5jIHwgMyArKy0KPiAgIDEgZmlsZSBjaGFuZ2VkLCAyIGlu c2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy91c2Iv Y29yZS9kcml2ZXIuYyBiL2RyaXZlcnMvdXNiL2NvcmUvZHJpdmVyLmMKPiBpbmRleCA1MzU2NDM4 NmVkNTcuLmUxMWQyZWFjNzZiNiAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL3VzYi9jb3JlL2RyaXZl ci5jCj4gKysrIGIvZHJpdmVycy91c2IvY29yZS9kcml2ZXIuYwo+IEBAIC0xOTAxLDcgKzE5MDEs OCBAQCBpbnQgdXNiX3NldF91c2IyX2hhcmR3YXJlX2xwbShzdHJ1Y3QgdXNiX2RldmljZSAqdWRl diwgaW50IGVuYWJsZSkKPiAgIAlzdHJ1Y3QgdXNiX2hjZCAqaGNkID0gYnVzX3RvX2hjZCh1ZGV2 LT5idXMpOwo+ICAgCWludCByZXQgPSAtRVBFUk07Cj4gICAKPiAtCWlmIChlbmFibGUgJiYgIXVk ZXYtPnVzYjJfaHdfbHBtX2FsbG93ZWQpCj4gKwlpZiAoZW5hYmxlICYmICF1ZGV2LT51c2IyX2h3 X2xwbV9hbGxvd2VkIHx8Cj4gKwkgICAgdWRldi0+dXNiMl9od19scG1fZW5hYmxlZCA9PSBlbmFi bGUpCj4gICAJCXJldHVybiAwOwo+ICAgCj4gICAJaWYgKGhjZC0+ZHJpdmVyLT5zZXRfdXNiMl9o d19scG0pIHsKPiAKClNvbWV0aGluZyBsaWtlIHRoYXQgd291bGQgcHJvYmFibHkgd29yay4KCldv dWxkIGl0IG1ha2Ugc2Vuc2UgdG8gc2tpcCBVU0IyIGh3IExQTSBlbmFibGluZyBpbiB1c2JfcG9y dF9yZXN1bWUoKSBpZgpwb3J0IHdhcyBqdXN0IHJlc2V0IChhbmQgdGh1cyBMUE0gZW5hYmxlZCk/ Cgpzb21ldGhpbmcgbGlrZSB0aGlzOgoKCi1NYXRoaWFzCgotLS0gYS9kcml2ZXJzL3VzYi9jb3Jl L2h1Yi5jCisrKyBiL2RyaXZlcnMvdXNiL2NvcmUvaHViLmMKQEAgLTM1MjAsNyArMzUyMCw3IEBA IGludCB1c2JfcG9ydF9yZXN1bWUoc3RydWN0IHVzYl9kZXZpY2UgKnVkZXYsIHBtX21lc3NhZ2Vf dCBtc2cpCiAgICAgICAgICAgICAgICAgaHViX3BvcnRfbG9naWNhbF9kaXNjb25uZWN0KGh1Yiwg cG9ydDEpOwogICAgICAgICB9IGVsc2UgIHsKICAgICAgICAgICAgICAgICAvKiBUcnkgdG8gZW5h YmxlIFVTQjIgaGFyZHdhcmUgTFBNICovCi0gICAgICAgICAgICAgICBpZiAodWRldi0+dXNiMl9o d19scG1fY2FwYWJsZSA9PSAxKQorICAgICAgICAgICAgICAgaWYgKHVkZXYtPnVzYjJfaHdfbHBt X2NhcGFibGUgPT0gMSAmJiAhdWRldi0+cmVzZXRfcmVzdW1lKQogICAgICAgICAgICAgICAgICAg ICAgICAgdXNiX3NldF91c2IyX2hhcmR3YXJlX2xwbSh1ZGV2LCAxKTsKICAKICAgICAgICAgICAg ICAgICAvKiBUcnkgdG8gZW5hYmxlIFVTQjMgTFRNICovCg==