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: MUSB interrupt storm on device removal From: Bin Liu Message-Id: <20190123201238.GD18982@uda0271908> Date: Wed, 23 Jan 2019 14:12:38 -0600 To: Alan Stern Cc: Johan Hovold , Greg KH , =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?= , linux-usb@vger.kernel.org List-ID: T24gV2VkLCBKYW4gMjMsIDIwMTkgYXQgMTI6NDI6MzZQTSAtMDUwMCwgQWxhbiBTdGVybiB3cm90 ZToKPiBPbiBXZWQsIDIzIEphbiAyMDE5LCBCaW4gTGl1IHdyb3RlOgo+IAo+ID4gPiBPbmUgcG9z c2liaWxpdHkgaXMgdG8gZ2l2ZWJhY2sgVVJCcyB3aXRoIGNlcnRhaW4gZXJyb3JzIChzdWNoIGFz Cj4gPiA+IC1FUFJPVE8pIG9ubHkgYXQgYSBmcmFtZSBib3VuZGFyeSwgb3IgYXQgMS1tcyBpbnRl cnZhbHMuICBUaGlzIGZlZWxzIAo+ID4gPiBsaWtlIGEgdmVyeSBhcnRpZmljaWFsIHNvbHV0aW9u LCB0aG91Z2guCj4gPiAKPiA+IE15IHBsYW4gaXMgdG8gYWRkIGFuIGVycm9yIGNvdW50ZXIgaW4g bXVzYiBkcml2ZXIgZW5kcG9pbnQgc3RydWN0LCBpZgo+ID4gLUVQUk9UTyBoYXMgaGFwcGVuZWQg Y29uc2VxdWVudGlhbGx5IGZvciBhIGNlcnRhaW4gdGltZXMsIGZvciBleGFtcGxlIDMsCj4gPiBn aXZlYmFjayBVUkJzIHdpdGggLUVQSVBFIGluc3RlYWQgLUVQUk9UTy4gVGhpcyBpcyB0aGUgc2lt cGxlc3Qgc29sdXRpb24KPiA+IEkgY2FuIHRoaW5rIG9mLCB0aG91Z2ggSSBoYXRlIGV4cGVuZGlu ZyBzdHJ1Y3QgdW5uZWNlc3NhcmlseSwgdGhpcyBpcwo+ID4gb25lIG9mIHRoZSBjYXNlcy4KPiAK PiBCdXQgLUVQSVBFIGlzIGRvY3VtZW50ZWQgdG8gbWVhbiB0aGF0IHRoZSBkZXZpY2UgcmVwbGll ZCB3aXRoIGEgU1RBTEwuICAKPiBZb3Ugd291bGQgYmUgdmlvbGF0aW5nIHRoZSBkb2N1bWVudGF0 aW9uLgoKKHNpZ2guLi4pCgo+ID4gPiA+ID4gSSBkbyBzZWUgbm93IHRoYXQgb2YgYWxsIFVTQiBk cml2ZXJzIHdlIGhhdmUgdHdvIGRyaXZlcnMgdGhhdCBoYW5kbGVzCj4gPiA+ID4gPiAtRVBST1RP IGJ5IHJlc3VibWl0dGluZyBhZnRlciBhIGRlbGF5LCB3aGlsZSBhIGhhbmRmdWwgZXhwbGljaXRs eSBkZWFscwo+ID4gPiA+ID4gd2l0aCAtRVBST1RPIGJ5IHNpbXBseSBzdG9wcGluZyB0byByZXN1 Ym1pdCAoc29tZSBwcm9iYWJseSBiYWlsIG91dCBvbgo+ID4gPiA+ID4gYWxsIGVycm9ycywgYnV0 IHRoZSBtYWpvcml0eSBhcHBlYXIgdG8gcmVzdWJtaXQgb24gLUVQUk9UTykuCj4gPiA+IAo+ID4g PiBBbnkgZHJpdmVyIHdoaWNoIGltbWVkaWF0ZWx5IHJldHJpZXMgYW4gVVJCIGFmdGVyIGdldHRp bmcgLUVQUk9UTyBvcgo+ID4gPiAtRUlMU0VRIG9yIC1FVElNRSwgYW5kIGhhcyBubyBtZWNoYW5p c20gZm9yIGJhY2tpbmcgb2ZmIG9yIGxpbWl0aW5nIHRoZQo+ID4gPiByZXRyaWVzLCBpcyBidWdn eS4gIEFzIGZhciBhcyBJIGNhbiBzZWUsIHRoYXQncyBhbGwgdGhlcmUgaXMgdG8gaXQuCj4gPiAK PiA+IEFncmVlZCwgYnV0IGdpdmVuIHRoYXQgbWFqb3JpdHkgYXBwZWFyIHRvIHJlc3VibWl0IG9u IC1FUFJPVE8gYXMgSm9oYW4KPiA+IHNhaWQsIEkgdGhpbmsgYmV0dGVyIHRvIGhhbmRsZSBpdCBp biBIQ0QuCj4gCj4gRG8gYWxsIHRob3NlIG90aGVyIGRyaXZlcnMgaGFuZGxlIC1FUElQRSBjb3Jy ZWN0bHk/ICBBIGxvZ2ljYWwgd2F5IHRvIAo+IHJlc3BvbmQgdG8gLUVQSVBFIGlzIHRvIGlzc3Vl IGEgQ2xlYXItSGFsdCByZXF1ZXN0OyB3aGF0IHdpbGwgaGFwcGVuIAo+IHdoZW4gdGhhdCBhbHNv IGZhaWxzPwo+IAo+IEkgdGhpbmsgaXQgbWFrZXMgbW9yZSBzZW5zZSB0byBjb250aW51ZSB1c2lu ZyAtRVBST1RPIGJ1dCBzbG93IGRvd24gdGhlIAo+IGV4Y2hhbmdlIG9mIHBhY2tldHMgc28gdGhh dCB0aGVyZSBpcyBubyBpbnRlcnJ1cHQgc3Rvcm0uCgp0aGUgbXVzYiBkcml2ZXIgZG9lc24ndCB1 c2UgU09GIGludGVycnVwdHMsIHNvIFNPRiBpbnRlcnJ1cHQgaXMKZGlzYWJsZWQuIEFub3RoZXIg d2F5IHRvIGFkZCBkZWxheSBmb3IgLUVQUk9UTyB3b3VsZCBiZSBtb3Zpbmcgc3VjaCBVUkJzCmlu dG8gYSBuZXcgbGlua2VkIGxpc3QgYW5kIHVzaW5nIGEgdGltZXIgdG8gcmVzY2hlZHVsZSB0aGUg bGlzdC4gVGhlCm11c2IgZHJpdmVyIGFscmVhZHkgaGFzIGVub3VnaCBtZXNzLCBJIHJlYWxseSBk b24ndCB3YW50IHRvIGFkZCB0aGlzCmxvZ2ljIGlmIHRoZXJlIGlzIG90aGVyIHNpbXBsZXIgb3B0 aW9uLi4uCgo+IAo+ID4gPiA+IFRoYW5rcyBmb3IgdGhlIGluZm8uCj4gPiA+ID4gSSB3aWxsIGhh bmRsZSB0aGlzIGNhc2UgaW4gbXVzYiBkcml2ZXIuCj4gPiA+IAo+ID4gPiBXaHkgZG9lc24ndCB0 aGUgc2FtZSBwcm9ibGVtIG9jY3VyIHdpdGggb3RoZXIgdHlwZXMgb2YgaG9zdCBjb250cm9sbGVy Pwo+ID4gCj4gPiBOb3Qgc3VyZSwgSSBhbSBvbiBtdXNiIGZvciBtb3N0IG9mIHRoZSB0aW1lcy4g TWF5YmUgb3RoZXIgSENEIGRvZXNuJ3QKPiA+IGdpdmViYWNrIFVSQnMgd2l0aCAtRVBST1RPIGlu IHN1Y2ggZXJyb3IgY2FzZS4KPiAKPiBlaGNpLWhjZCBhbHNvIHVzZXMgLUVQUk9UTy4KCklzIGl0 IHBvc3NpYmxlIHRvIHRlc3QgdGhlIHVzZSBjYXNlIG9uIGVoY2k/CgotIGNvbm5lY3QgYSBtdWx0 aS1wb3J0cyB1c2Igc2VyaWFsIGRldmljZSB0byBhIGh1YjsKLSBvcGVuIG11bHRpcGxlIHBvcnRz IHdpdGggY2F0IGNvbW1hbmQ7Ci0gcmVtb3ZlIHRoZSB1c2Igc2VyaWFsIGRldmljZSBmcm9tIHRo ZSBodWI7Ci0gY29uc29sZSBsb2NrdXAgaGFwcGVucz8KCj4gPiBtdXNiIGNvbnRyb2xsZXIgaGFz IGEgcmVnaXN0ZXIgYml0IHRlbGxpbmcgdGhlIGNvbnRyb2xsZXIgaGFzIHRyaWVkIHRoZQo+ID4g dHJhbnNhY3Rpb24gMyB0aW1lcyBidXQgZGlkbid0IHJlY2VpdmUgYW55IHJlc3BvbnNlLCB0aGVu IHRoZSBtdXNiCj4gPiBkcml2ZXIganVzdCBnaXZlYmFjayB0aGlzIFVSQiB3aXRoIC1FUFJPVE8u Cj4gCj4gU2FtZSB3aXRoIEVIQ0kuCgpSZWdhcmRzLAotQmluLgo=