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: <20180713192232.GA3949@uda0271908> Date: Fri, 13 Jul 2018 14:22:32 -0500 To: linux-usb@vger.kernel.org List-ID: SGksCgpJIGdvdCBhIHJlcG9ydCBzYXlpbmcgdGhhdCB3aGVuIG92ZXJjdXJyZW50IGhhcHBlbnMg aW4gb25lIG9mIHRoZSBodWIKZG93bnN0cmVhbSBwb3J0cywgVVNCX1BPUlRfU1RBVF9PVkVSQ1VS UkVOVCBpcyBub3Qgc2V0IGluIHBvcnRzdGF0dXMsCmluc3RlYWQgVVNCX1BPUlRfU1RBVF9DX09W RVJDVVJSRU5UIGlzIHNldCBpbiBwb3J0Y2hhbmdlLCB0aGVuIHRoZQpvdmVyY3VycmVudCBjb25k aXRpb24gaXMgbm90IGhhbmRsZWQgaW4gaHViX2V2ZW50KCkuCgpUaGUgZm9sbG93aW5nIHBhdGNo IHNvbHZlcyB0aGUgaXNzdWUuCgp0IGEvZHJpdmVycy91c2IvY29yZS9odWIuYyBiL2RyaXZlcnMv dXNiL2NvcmUvaHViLmMKaW5kZXggNDQyYmU3ZjMxMmY2Li4xMTg1NTdhY2M3NGIgMTAwNjQ0CgpU aGUgdXNiMi4wIHNwZWMgc2VjdGlvbiAxMS4xMi41IHN0YXRlcwogICAgIklmIGEgaHViIGhhcyBw ZXItcG9ydCBwb3dlciBzd2l0Y2hpbmcgYW5kIHBlci1wb3J0IGN1cnJlbnQgbGltaXRpbmcsIGFu CiAgICAgb3Zlci1jdXJyZW50IG9uIG9uZSBwb3J0IG1heSBzdGlsbCBjYXVzZSB0aGUgcG93ZXIg b24gYW5vdGhlciBwb3J0IHRvCiAgICAgZmFsbCBiZWxvdyBzcGVjaWZpYyBtaW5pbXVtcy4gSW4g dGhpcyBjYXNlLCB0aGUgYWZmZWN0ZWQgcG9ydCBpcyBwbGFjZWQKICAgICBpbiB0aGUgUG93ZXIt T2ZmIHN0YXRlIGFuZCBDX1BPUlRfT1ZFUl9DVVJSRU5UIGlzIHNldCBmb3IgdGhlIHBvcnQsIGJ1 dAogICAgIFBPUlRfT1ZFUl9DVVJSRU5UIGlzIG5vdCBzZXQuIgoKU28gaXMgdGhlIHBhdGNoIGFi b3ZlIGEgcHJvcGVyIGZpeD8gb3Igc29tZXRoaW5nIGVsc2UgbWlnaHQgYmUgbWlzc2luZz8KClRo YW5rcywKLUJpbi4KLS0tClRvIHVuc3Vic2NyaWJlIGZyb20gdGhpcyBsaXN0OiBzZW5kIHRoZSBs aW5lICJ1bnN1YnNjcmliZSBsaW51eC11c2IiIGluCnRoZSBib2R5IG9mIGEgbWVzc2FnZSB0byBt YWpvcmRvbW9Admdlci5rZXJuZWwub3JnCk1vcmUgbWFqb3Jkb21vIGluZm8gYXQgIGh0dHA6Ly92 Z2VyLmtlcm5lbC5vcmcvbWFqb3Jkb21vLWluZm8uaHRtbAoKLS0tIGEvZHJpdmVycy91c2IvY29y ZS9odWIuYworKysgYi9kcml2ZXJzL3VzYi9jb3JlL2h1Yi5jCkBAIC0xMTQ0LDcgKzExNDQsOCBA QCBzdGF0aWMgdm9pZCBodWJfYWN0aXZhdGUoc3RydWN0IHVzYl9odWIgKmh1YiwgZW51bSBodWJf YWN0aXZhdGlvbl90eXBlIHR5cGUpCiAgICAgICAgICAgICAgICAgICAgICAgICAqIGNoZWNrIGZv ciBhIG5ldyBjb25uZWN0aW9uCiAgICAgICAgICAgICAgICAgICAgICAgICAqLwogICAgICAgICAg ICAgICAgICAgICAgICBpZiAodWRldiB8fCAocG9ydHN0YXR1cyAmIFVTQl9QT1JUX1NUQVRfQ09O TkVDVElPTikgfHwKLSAgICAgICAgICAgICAgICAgICAgICAgICAgIChwb3J0c3RhdHVzICYgVVNC X1BPUlRfU1RBVF9PVkVSQ1VSUkVOVCkpCisgICAgICAgICAgICAgICAgICAgICAgICAgICAocG9y dHN0YXR1cyAmIFVTQl9QT1JUX1NUQVRfT1ZFUkNVUlJFTlQpIHx8CisgICAgICAgICAgICAgICAg ICAgICAgICAgICAocG9ydGNoYW5nZSAmIFVTQl9QT1JUX1NUQVRfQ19PVkVSQ1VSUkVOVCkpCiAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgc2V0X2JpdChwb3J0MSwgaHViLT5jaGFuZ2Vf Yml0cyk7CiAKICAgICAgICAgICAgICAgIH0gZWxzZSBpZiAocG9ydHN0YXR1cyAmIFVTQl9QT1JU X1NUQVRfRU5BQkxFKSB7Cg==