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 hub driver bug in overcurrent handling? From: Bin Liu Message-Id: <20180713192646.GB3949@uda0271908> Date: Fri, 13 Jul 2018 14:26:46 -0500 To: linux-usb@vger.kernel.org List-ID: T24gRnJpLCBKdWwgMTMsIDIwMTggYXQgMDI6MjI6MzJQTSAtMDUwMCwgQmluIExpdSB3cm90ZToK PiBIaSwKPiAKPiBJIGdvdCBhIHJlcG9ydCBzYXlpbmcgdGhhdCB3aGVuIG92ZXJjdXJyZW50IGhh cHBlbnMgaW4gb25lIG9mIHRoZSBodWIKPiBkb3duc3RyZWFtIHBvcnRzLCBVU0JfUE9SVF9TVEFU X09WRVJDVVJSRU5UIGlzIG5vdCBzZXQgaW4gcG9ydHN0YXR1cywKPiBpbnN0ZWFkIFVTQl9QT1JU X1NUQVRfQ19PVkVSQ1VSUkVOVCBpcyBzZXQgaW4gcG9ydGNoYW5nZSwgdGhlbiB0aGUKPiBvdmVy Y3VycmVudCBjb25kaXRpb24gaXMgbm90IGhhbmRsZWQgaW4gaHViX2V2ZW50KCkuCgpub3QgaGFu ZGxlZCBiZWNhdXNlIG5laXRoZXIgaHViLT5jaGFuZ2VfYml0cyBub3IgaHViLT5ldmVudF9iaXRz IGlzIHNldC4KCj4gVGhlIGZvbGxvd2luZyBwYXRjaCBzb2x2ZXMgdGhlIGlzc3VlLgo+IAo+IHQg YS9kcml2ZXJzL3VzYi9jb3JlL2h1Yi5jIGIvZHJpdmVycy91c2IvY29yZS9odWIuYwo+IGluZGV4 IDQ0MmJlN2YzMTJmNi4uMTE4NTU3YWNjNzRiIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvdXNiL2Nv cmUvaHViLmMKPiArKysgYi9kcml2ZXJzL3VzYi9jb3JlL2h1Yi5jCj4gQEAgLTExNDQsNyArMTE0 NCw4IEBAIHN0YXRpYyB2b2lkIGh1Yl9hY3RpdmF0ZShzdHJ1Y3QgdXNiX2h1YiAqaHViLCBlbnVt IGh1Yl9hY3RpdmF0aW9uX3R5cGUgdHlwZSkKPiAgICAgICAgICAgICAgICAgICAgICAgICAgKiBj aGVjayBmb3IgYSBuZXcgY29ubmVjdGlvbgo+ICAgICAgICAgICAgICAgICAgICAgICAgICAqLwo+ ICAgICAgICAgICAgICAgICAgICAgICAgIGlmICh1ZGV2IHx8IChwb3J0c3RhdHVzICYgVVNCX1BP UlRfU1RBVF9DT05ORUNUSU9OKSB8fAo+IC0gICAgICAgICAgICAgICAgICAgICAgICAgICAocG9y dHN0YXR1cyAmIFVTQl9QT1JUX1NUQVRfT1ZFUkNVUlJFTlQpKQo+ICsgICAgICAgICAgICAgICAg ICAgICAgICAgICAocG9ydHN0YXR1cyAmIFVTQl9QT1JUX1NUQVRfT1ZFUkNVUlJFTlQpIHx8Cj4g KyAgICAgICAgICAgICAgICAgICAgICAgICAgIChwb3J0Y2hhbmdlICYgVVNCX1BPUlRfU1RBVF9D X09WRVJDVVJSRU5UKSkKPiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIHNldF9iaXQo cG9ydDEsIGh1Yi0+Y2hhbmdlX2JpdHMpOwo+ICAKPiAgICAgICAgICAgICAgICAgfSBlbHNlIGlm IChwb3J0c3RhdHVzICYgVVNCX1BPUlRfU1RBVF9FTkFCTEUpIHsKPiAKPiBUaGUgdXNiMi4wIHNw ZWMgc2VjdGlvbiAxMS4xMi41IHN0YXRlcwo+ICAgICAiSWYgYSBodWIgaGFzIHBlci1wb3J0IHBv d2VyIHN3aXRjaGluZyBhbmQgcGVyLXBvcnQgY3VycmVudCBsaW1pdGluZywgYW4KPiAgICAgIG92 ZXItY3VycmVudCBvbiBvbmUgcG9ydCBtYXkgc3RpbGwgY2F1c2UgdGhlIHBvd2VyIG9uIGFub3Ro ZXIgcG9ydCB0bwo+ICAgICAgZmFsbCBiZWxvdyBzcGVjaWZpYyBtaW5pbXVtcy4gSW4gdGhpcyBj YXNlLCB0aGUgYWZmZWN0ZWQgcG9ydCBpcyBwbGFjZWQKPiAgICAgIGluIHRoZSBQb3dlci1PZmYg c3RhdGUgYW5kIENfUE9SVF9PVkVSX0NVUlJFTlQgaXMgc2V0IGZvciB0aGUgcG9ydCwgYnV0Cj4g ICAgICBQT1JUX09WRVJfQ1VSUkVOVCBpcyBub3Qgc2V0LiIKPiAKPiBTbyBpcyB0aGUgcGF0Y2gg YWJvdmUgYSBwcm9wZXIgZml4PyBvciBzb21ldGhpbmcgZWxzZSBtaWdodCBiZSBtaXNzaW5nPwo+ IAo+IFRoYW5rcywKPiAtQmluLgotLS0KVG8gdW5zdWJzY3JpYmUgZnJvbSB0aGlzIGxpc3Q6IHNl bmQgdGhlIGxpbmUgInVuc3Vic2NyaWJlIGxpbnV4LXVzYiIgaW4KdGhlIGJvZHkgb2YgYSBtZXNz YWdlIHRvIG1ham9yZG9tb0B2Z2VyLmtlcm5lbC5vcmcKTW9yZSBtYWpvcmRvbW8gaW5mbyBhdCAg aHR0cDovL3ZnZXIua2VybmVsLm9yZy9tYWpvcmRvbW8taW5mby5odG1sCg==