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: <20190121163140.GE30080@uda0271908> Date: Mon, 21 Jan 2019 10:31:40 -0600 To: =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?= Cc: linux-usb@vger.kernel.org List-ID: T24gRnJpLCBKYW4gMTgsIDIwMTkgYXQgMDg6MTU6MDJQTSArMDAwMCwgTcOlbnMgUnVsbGfDpXJk IHdyb3RlOgo+IEJpbiBMaXUgPGItbGl1QHRpLmNvbT4gd3JpdGVzOgo+IAo+ID4gT24gTW9uLCBE ZWMgMTcsIDIwMTggYXQgMDk6MzY6MTdQTSArMDAwMCwgTcOlbnMgUnVsbGfDpXJkIHdyb3RlOgo+ ID4+IEJpbiBMaXUgPGItbGl1QHRpLmNvbT4gd3JpdGVzOgo+ID4+IAo+ID4+ID4gT24gTW9uLCBE ZWMgMTcsIDIwMTggYXQgMDc6MTY6MDhQTSArMDAwMCwgTcOlbnMgUnVsbGfDpXJkIHdyb3RlOgo+ ID4+ID4+IEJpbiBMaXUgPGItbGl1QHRpLmNvbT4gd3JpdGVzOgo+ID4+ID4+IAo+ID4+ID4+ID4g SGksCj4gPj4gPj4gPgo+ID4+ID4+ID4gT24gTW9uLCBEZWMgMTcsIDIwMTggYXQgMDM6MTM6MTJQ TSArMDAwMCwgTcOlbnMgUnVsbGfDpXJkIHdyb3RlOgo+ID4+ID4+ID4+IEkgaGF2ZSBhIHN0cmFu Z2UgcHJvYmxlbSB3aXRoIHRoZSBtdXNiIGRyaXZlciBpbiBob3N0IG1vZGUgb24gQU0zMzU4Cj4g Pj4gPj4gPj4gKGJlYWdsZWJvbmUpIGhhcmR3YXJlLiAgSWYgSSBjb25uZWN0IGEgbXVsdGktcG9y dCBzZXJpYWwgYWRhcHRlciBhbmQKCklzIHRoaXMgb24gYmVhZ2xlYm9uZSBvciBiZWFnbGVib25l YmxhY2s/Cgo+ID4+ID4+ID4+IG9wZW4gdHdvIG9yIG1vcmUgb2YgdGhlIHR0eXMsIHRoZW4gdW5w bHVnIHRoZSBkZXZpY2UsIGFuIGludGVycnVwdCBzdG9ybQo+ID4+ID4+ID4+IGVuc3VlcyB0aGF0 IG1ha2VzIHRoZSBzeXN0ZW0gY29tcGxldGVseSB1bnJlc3BvbnNpdmUgdW50aWwgdGhlIHdhdGNo ZG9nCj4gPj4gPj4gPj4gcmVzZXRzIGl0LiAgRW5hYmxpbmcgc29tZSBkZWJ1ZyBtZXNzYWdlcywg SSBnZXQgdGhpcyByZXBlYXRlZCBlbmRsZXNzbHk6Cj4gPj4gPj4gPj4gCj4gPj4gPj4gPj4gbXVz Yi1oZHJjIG11c2ItaGRyYy4xOiB1c2JpbnRyICgwKSBlcGludHIoMWMwMDAwKQo+ID4+ID4+ID4+ IG11c2ItaGRyYyBtdXNiLWhkcmMuMTogZW5kIDIgUlggcHJvdG8gZXJyb3IKPiA+PiA+PiA+PiBt dXNiLWhkcmMgbXVzYi1oZHJjLjE6IC4uLiBuZXh0IGVwMiBSWCB1cmIgNzJhYWJjMTMKPiA+PiA+ PiA+PiBtdXNiLWhkcmMgbXVzYi1oZHJjLjE6IDwtLSBodzIgdXJiIDcyYWFiYzEzIHNwZDMgZGV2 NCBlcDNpbiBoX2FkZHIwMiBoX3BvcnQwMCBieXRlcyA0MDk2Cj4gPj4gPj4gPj4gbXVzYi1oZHJj IG11c2ItaGRyYy4xOiBSWENTUjIgOj0gMjAyMAo+ID4+ID4+ID4+IG11c2ItaGRyYyBtdXNiLWhk cmMuMTogZW5kIDMgUlggcHJvdG8gZXJyb3IKPiA+PiA+PiA+PiBtdXNiLWhkcmMgbXVzYi1oZHJj LjE6IC4uLiBuZXh0IGVwMyBSWCB1cmIgOTRjMmNjNDMKPiA+PiA+PiA+PiBtdXNiLWhkcmMgbXVz Yi1oZHJjLjE6IDwtLSBodzMgdXJiIDk0YzJjYzQzIHNwZDMgZGV2NCBlcDJpbiBoX2FkZHIwMiBo X3BvcnQwMCBieXRlcyA0MDk2Cj4gPj4gPj4gPj4gbXVzYi1oZHJjIG11c2ItaGRyYy4xOiBSWENT UjMgOj0gMjAyMAo+ID4+ID4+ID4+IG11c2ItaGRyYyBtdXNiLWhkcmMuMTogZW5kIDQgUlggcHJv dG8gZXJyb3IKPiA+PiA+PiA+PiBtdXNiLWhkcmMgbXVzYi1oZHJjLjE6IC4uLiBuZXh0IGVwNCBS WCB1cmIgY2JkYzM5YzYKPiA+PiA+PiA+PiBtdXNiLWhkcmMgbXVzYi1oZHJjLjE6IDwtLSBodzQg dXJiIGNiZGMzOWM2IHNwZDMgZGV2NCBlcDVpbiBoX2FkZHIwMiBoX3BvcnQwMCBieXRlcyA0MDk2 Cj4gPj4gPj4gPj4gbXVzYi1oZHJjIG11c2ItaGRyYy4xOiBSWENTUjQgOj0gMjAyMAo+ID4+ID4+ ID4+IAo+ID4+ID4+ID4+IFRoaXMgaGFwcGVucyB3aXRoIGJvdGggYSB0d28tcG9ydCBGVERJIHNl cmlhbCBhZGFwdGVyIGFuZCBhIFNpbWNvbSBHU00KPiA+PiA+PiA+PiBtb2RlbSAoUXVhbGNvbW0g YmFzZWQpIHVzaW5nIHRoZSAib3B0aW9uIiBkcml2ZXIuICBJbiBib3RoIGNhc2VzLCB0aGUKPiA+ PiA+PiA+PiBwcm9ibGVtIG9jY3VycyBvbmx5IGlmIHR3byBvciBtb3JlIG9mIHRoZSB0dHlzIGFy ZSBvcGVuZWQgd2hlbiB0aGUKPiA+PiA+PiA+PiBkZXZpY2UgaXMgdW5wbHVnZ2VkLgo+ID4+ID4+ ID4KPiA+PiA+PiA+IFBsZWFzZSBoZWxwIG1lIHRvIHVuZGVyc3RhbmQgdGhlIHRlc3QgY2FzZSBz byB0aGF0IEkgY2FuIHRyeSB0bwo+ID4+ID4+ID4gcmVwbGljYXRlIHRoZSBpc3N1ZSAtIGlmIEkg Y29ubmVjdCBhIG11bHRpLXBvcnQgRlRESSBhZGFwdGVyLCB1c2UgY2F0Cj4gPj4gPj4gPiBjb21t YW5kIHRvIG9wZW4gbW9yZSB0aGFuIG9uZSBwb3J0IHRoZW4gdW5wbHVnIHRoZSBhZGFwdGVyLCBJ IHNob3VsZAo+ID4+ID4+ID4gc2VlIHRoZSBmbG9vZGluZyBkZWJ1ZyBtZXNzYWdlcz8KPiA+PiA+ PiAKPiA+PiA+PiBZZXMsIHRoYXQncyB3aGF0IEknbSBzZWVpbmcuICBPYnZpb3VzbHksIHlvdSBo YXZlIHRvIGZpcnN0IGVuYWJsZSB0aG9zZQo+ID4+ID4+IGRlYnVnIG1lc3NhZ2VzLiAgT3RoZXJ3 aXNlIGl0IGp1c3Qgc3RvcHMgZGVhZCBpbiBpdHMgdHJhY2tzLgo+ID4+ID4+IAo+ID4+ID4+IEkg Zm9yZ290IHRvIG1lbnRpb24sIEkgYWxzbyB0cmllZCBtYWtpbmcgdGhlIGludGVycnVwdCBoYW5k bGVyIHRocmVhZGVkLgo+ID4+ID4+IFRoaXMgYWxsb3dzIHRoZSBzeXN0ZW0gdG8gcmVtYWluIHNs aWdodGx5IHJlc3BvbnNpdmUsIGJ1dCBpdCBuZXZlcgo+ID4+ID4+IHJlY292ZXJzLgo+ID4+ID4+ IAo+ID4+ID4+ID4gT24gd2hpY2gga2VybmVsIHZlcnNpb24gZG8geW91IHNlZSB0aGUgcHJvYmxl bT8KPiA+PiA+PiAKPiA+PiA+PiBUaGlzIHdhcyBvbiA0LjE5LjkuICBJIGRvbid0IHNlZSBhbnkg bGF0ZXIgY29tbWl0cyB0aGF0IGxvb2sgcmVsYXRlZCwKPiA+PiA+PiBidXQgSSBjYW4gdHJ5IHNv bWUgb3RoZXIgdHJlZSBpZiB5b3Ugc3VnZ2VzdCBvbmUuCj4gPj4gPgo+ID4+ID4gVGhpcyBzaG91 bGQgYmUgZmluZS4gVGhlIGRyaXZlciB3YXMgYmFyZWx5IHRvdWNoZWQgcmVjZW50bHkuCj4gPj4g PiBJIGhhdmUgb25seSBhIGZldyBkYXlzIGxlZnQgZm9yIDIwMTgsIGxldCBtZSB0cnkgdG8gcmVw cm9kdWNlIGl0IGZpcnN0Cj4gPj4gPiBhZnRlciBJIGFtIGJhY2sgaW4gSmFuLgo+ID4+IAo+ID4+ IE5vIHByb2JsZW0uICBJIHN1c3BlY3QgbW9zdCBvZiB1cyB3aWxsIGhhdmUgc29tZSB0aW1lIG9m ZiBkdXJpbmcgdGhlCj4gPj4gaG9saWRheXMuCj4gPj4gCj4gPj4gSWYgaXQgaGVscHMsIHdlIGZp cnN0IG5vdGljZWQgdGhpcyB3aXRoIGEgNC45IChzdGFibGUpIGtlcm5lbCwgc28gaXQncwo+ID4+ IG5vdCBhIHJlY2VudCByZWdyZXNzaW9uLgo+ID4KPiA+IFdoZW4gSSB0cmllZCB0byByZXByb2R1 Y2UgdGhlIGlzc3VlIHRvZGF5LCBzb21ldGhpbmcgd2VpcmQgaGFwcGVuZWQsIHRoZQo+ID4gdjQu MTkuOSBrZXJuZWwgSSBjb21waWxlZCBkb2Vzbid0IGJyaW5nIHVzYjEgcG9ydCBvbiBteSBCQkIg dG8gaG9zdAo+ID4gbW9kZSwgb3RnIHN0YXRlIHdhcyBzdHVjayBpbiBhX2lkbGUsIERldkN0bCBy ZWdpc3RlciBpcyAweDgxLiBUaGUgbGF0ZXN0CgpJIGZpeGVkIHRoZSB0aGUgYnVnIHdoaWNoIHdh cyBpbiB0aGUgYW0zMzV4IHBoeSBkcml2ZXIgbGFzdCB3ZWVrLAoKPiA+IHY1LjAtcmMxIGFuZCBz b21ld2hlcmUgaW4gdjQuMTYgZG8gbm90IGhhdmUgc3VjaCBwcm9ibGVtLiBJIHRyaWVkIGdpdAo+ ID4gYmlzZWN0LCBidXQgaXQgd2FzIHNjcmV3ZWQgdXAgc29tZXdoZXJlIG5lZWQgdG8gc3RhcnQg b3Zlci4gSSB3aWxsIGZpbmQKPiA+IHNvbWUgdGltZSBmb3IgdGhpcyBpc3N1ZS4KPiA+Cj4gPiBC eSB0aGUgd2F5LCBJIGRvbid0IHNlZSB0aGUgaW50ZXJydXB0IHN0b3JtIGlzc3VlIHdpdGggdjUu MC1yYzEgb24gbXkKPiA+IEJCQiwgd2hlbiB1bnBsdWdnZWQgdGhlIEZUREkgNC1wb3J0IGRldmlj ZSwgdGhlICdwcm90byBlcnJvcicgbWVzc2FnZQo+ID4gb25seSBzaG93cyBvbmNlIGZvciBlYWNo IHBvcnQgb3BlbmVkLCB0aGVuIE1VU0JfRElTQ09OTkVDVCBpbnRlcnJ1cHQKPiA+ICgweDIwKSBo YXBwZW5lZCBhbmQgZXZlcnl0aGluZyB3YXMgdG9ybiBkb3duLgo+IAo+IEkgdGVzdGVkIHRoaXMg d2l0aCB2NS4wLXJjMi4gIE5vdyB0aGUgYmFkbmVzcyBkb2Vzbid0IGhhcHBlbiBldmVyeSB0aW1l LAo+IGJ1dCB0d28gb3IgdGhyZWUgYXR0ZW1wdHMgaXMgc3RpbGwgZW5vdWdoIHRvIHJlcHJvZHVj ZSBpdC4gIEFsc28sIHdoZW4KPiBpdCBkb2VzIGhhcHBlbiwgdGhlIHN5c3RlbSBubyBsb25nZXIg ZnJlZXplcyBjb21wbGV0ZWx5LiAgSXQgaXMgbm93Cj4gcG9zc2libGUgdG8gaW50ZXJydXB0IHRo ZSBwcm9jZXNzIHdpdGggdGhlIHR0eSBvcGVuLCBhdCB3aGljaCBwb2ludCB0aGUKPiBrZXJuZWwg cHJpbnRzIHRoZXNlIG1lc3NhZ2VzOgo+IAo+IGZ0ZGlfc2lvIHR0eVVTQjA6IGZhaWxlZCB0byBn ZXQgbW9kZW0gc3RhdHVzOiAtNzEKPiBmdGRpX3NpbyB0dHlVU0IwOiBlcnJvciBmcm9tIGZsb3dj b250cm9sIHVyYgo+IAo+IE1lYW53aGlsZSwgYWJvdXQgMTBrIGludGVycnVwdHMgcGVyIHNlY29u ZCBoYXZlIGJlZW4gcmVjb3JkZWQuICBUaGUgVVNCCj4gZGV2aWNlIGlzIHN0aWxsIHJlcG9ydGVk IGFzIGNvbm5lY3RlZCwgYW5kIHRoZSBwb3J0IHJlbWFpbnMgdW51c2FibGUuCgpidXQgSSBzdGls bCBjYW5ub3Qgc2VlIHRoZSBpbnRlcnJ1cHQgc3Rvcm0gcHJvYmxlbSBpbiB2NC4xOS45LgpEaWQg eW91IGJ1aWxkIHRoZSBrZXJuZWwgd2l0aCBvbWFwMnBsdXNfZGVmY29uZmlnIHdpdGhvdXQgYW55 IG90aGVyCmNoYW5nZXM/CgpSZWdhcmRzLAotQmluLgo=