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: <20180718144234.GC3949@uda0271908> Date: Wed, 18 Jul 2018 09:42:34 -0500 To: Alan Stern Cc: linux-usb@vger.kernel.org List-ID: T24gRnJpLCBKdWwgMTMsIDIwMTggYXQgMDQ6MzU6MzNQTSAtMDQwMCwgQWxhbiBTdGVybiB3cm90 ZToKPiBPbiBGcmksIDEzIEp1bCAyMDE4LCBCaW4gTGl1IHdyb3RlOgo+IAo+ID4gSGksCj4gPiAK PiA+IEkgZ290IGEgcmVwb3J0IHNheWluZyB0aGF0IHdoZW4gb3ZlcmN1cnJlbnQgaGFwcGVucyBp biBvbmUgb2YgdGhlIGh1Ygo+ID4gZG93bnN0cmVhbSBwb3J0cywgVVNCX1BPUlRfU1RBVF9PVkVS Q1VSUkVOVCBpcyBub3Qgc2V0IGluIHBvcnRzdGF0dXMsCj4gPiBpbnN0ZWFkIFVTQl9QT1JUX1NU QVRfQ19PVkVSQ1VSUkVOVCBpcyBzZXQgaW4gcG9ydGNoYW5nZSwgdGhlbiB0aGUKPiA+IG92ZXJj dXJyZW50IGNvbmRpdGlvbiBpcyBub3QgaGFuZGxlZCBpbiBodWJfZXZlbnQoKS4KPiA+IAo+ID4g VGhlIGZvbGxvd2luZyBwYXRjaCBzb2x2ZXMgdGhlIGlzc3VlLgo+ID4gCj4gPiB0IGEvZHJpdmVy cy91c2IvY29yZS9odWIuYyBiL2RyaXZlcnMvdXNiL2NvcmUvaHViLmMKPiA+IGluZGV4IDQ0MmJl N2YzMTJmNi4uMTE4NTU3YWNjNzRiIDEwMDY0NAo+ID4gLS0tIGEvZHJpdmVycy91c2IvY29yZS9o dWIuYwo+ID4gKysrIGIvZHJpdmVycy91c2IvY29yZS9odWIuYwo+ID4gQEAgLTExNDQsNyArMTE0 NCw4IEBAIHN0YXRpYyB2b2lkIGh1Yl9hY3RpdmF0ZShzdHJ1Y3QgdXNiX2h1YiAqaHViLCBlbnVt IGh1Yl9hY3RpdmF0aW9uX3R5cGUgdHlwZSkKPiA+ICAgICAgICAgICAgICAgICAgICAgICAgICAq IGNoZWNrIGZvciBhIG5ldyBjb25uZWN0aW9uCj4gPiAgICAgICAgICAgICAgICAgICAgICAgICAg Ki8KPiA+ICAgICAgICAgICAgICAgICAgICAgICAgIGlmICh1ZGV2IHx8IChwb3J0c3RhdHVzICYg VVNCX1BPUlRfU1RBVF9DT05ORUNUSU9OKSB8fAo+ID4gLSAgICAgICAgICAgICAgICAgICAgICAg ICAgIChwb3J0c3RhdHVzICYgVVNCX1BPUlRfU1RBVF9PVkVSQ1VSUkVOVCkpCj4gPiArICAgICAg ICAgICAgICAgICAgICAgICAgICAgKHBvcnRzdGF0dXMgJiBVU0JfUE9SVF9TVEFUX09WRVJDVVJS RU5UKSB8fAo+ID4gKyAgICAgICAgICAgICAgICAgICAgICAgICAgIChwb3J0Y2hhbmdlICYgVVNC X1BPUlRfU1RBVF9DX09WRVJDVVJSRU5UKSkKPiA+ICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgc2V0X2JpdChwb3J0MSwgaHViLT5jaGFuZ2VfYml0cyk7Cj4gPiAgCj4gPiAgICAgICAg ICAgICAgICAgfSBlbHNlIGlmIChwb3J0c3RhdHVzICYgVVNCX1BPUlRfU1RBVF9FTkFCTEUpIHsK PiAKPiBQbGVhc2UgYWxzbyB1cGRhdGUgdGhlIGltbWVkaWF0ZWx5IHByZWNlZGluZyBjb21tZW50 LgoKU3VyZS4KCj4gCj4gPiBUaGUgdXNiMi4wIHNwZWMgc2VjdGlvbiAxMS4xMi41IHN0YXRlcwo+ ID4gICAgICJJZiBhIGh1YiBoYXMgcGVyLXBvcnQgcG93ZXIgc3dpdGNoaW5nIGFuZCBwZXItcG9y dCBjdXJyZW50IGxpbWl0aW5nLCBhbgo+ID4gICAgICBvdmVyLWN1cnJlbnQgb24gb25lIHBvcnQg bWF5IHN0aWxsIGNhdXNlIHRoZSBwb3dlciBvbiBhbm90aGVyIHBvcnQgdG8KPiA+ICAgICAgZmFs bCBiZWxvdyBzcGVjaWZpYyBtaW5pbXVtcy4gSW4gdGhpcyBjYXNlLCB0aGUgYWZmZWN0ZWQgcG9y dCBpcyBwbGFjZWQKPiA+ICAgICAgaW4gdGhlIFBvd2VyLU9mZiBzdGF0ZSBhbmQgQ19QT1JUX09W RVJfQ1VSUkVOVCBpcyBzZXQgZm9yIHRoZSBwb3J0LCBidXQKPiA+ICAgICAgUE9SVF9PVkVSX0NV UlJFTlQgaXMgbm90IHNldC4iCj4gPiAKPiA+IFNvIGlzIHRoZSBwYXRjaCBhYm92ZSBhIHByb3Bl ciBmaXg/IG9yIHNvbWV0aGluZyBlbHNlIG1pZ2h0IGJlIG1pc3Npbmc/Cj4gCj4gSXQgY2VydGFp bmx5IHNlZW1zIGxpa2UgYSByZWFzb25hYmxlIHRoaW5nIHRvIGRvLiAgSWYgeW91IHNheSBpdCBm aXhlcyAKPiB0aGUgcHJvYmxlbSwgd2UgY2FuIGFkZCBpdCBpbi4KCldpbGwgc2VuZCB0aGUgcGF0 Y2guCgpUaGFua3MsCi1CaW4uCi0tLQpUbyB1bnN1YnNjcmliZSBmcm9tIHRoaXMgbGlzdDogc2Vu ZCB0aGUgbGluZSAidW5zdWJzY3JpYmUgbGludXgtdXNiIiBpbgp0aGUgYm9keSBvZiBhIG1lc3Nh Z2UgdG8gbWFqb3Jkb21vQHZnZXIua2VybmVsLm9yZwpNb3JlIG1ham9yZG9tbyBpbmZvIGF0ICBo dHRwOi8vdmdlci5rZXJuZWwub3JnL21ham9yZG9tby1pbmZvLmh0bWwK