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: cdc-acm: fix race during wakeup blocking TX traffic From: Oliver Neukum Message-Id: <1553594441.2729.7.camel@suse.com> Date: Tue, 26 Mar 2019 11:00:41 +0100 To: Romain Izard , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org List-ID: T24gRnIsIDIwMTktMDMtMjIgYXQgMTY6NTMgKzAxMDAsIFJvbWFpbiBJemFyZCB3cm90ZToKPiBX aGVuIHRoZSBrZXJuZWwgaXMgY29tcGlsZWQgd2l0aCBwcmVlbXB0aW9uIGVuYWJsZWQsIHRoZSBV UkIgY29tcGxldGlvbgo+IGhhbmRsZXIgY2FuIHJ1biBpbiBwYXJhbGxlbCB3aXRoIHRoZSB3b3Jr IHJlc3BvbnNpYmxlIGZvciB3YWtpbmcgdXAgdGhlCj4gdHR5IGxheWVyLiBJZiB0aGUgVVJCIGhh bmRsZXIgc2V0cyB0aGUgRVZFTlRfVFRZX1dBS0VVUCBiaXQgZHVyaW5nIHRoZQo+IGNhbGwgdG8g dHR5X3BvcnRfdHR5X3dha2V1cCgpIHRvIHNpZ25hbCB0aGF0IHRoZXJlIGlzIHJvb20gZm9yIGFk ZGl0aW9uYWwKPiBpbnB1dCwgaXQgd2lsbCBiZSBjbGVhcmVkIGF0IHRoZSBlbmQgb2YgdGhpcyBj YWxsLiBBcyBhIHJlc3VsdCwgVFggdHJhZmZpYwo+IG9uIHRoZSB1cHBlciBsYXllciB3aWxsIGJl IGJsb2NrZWQuCgpHb29kIGNhdGNoLgoKPiBUaGlzIGNhbiBiZSBzZWVuIHdpdGggYSBrZXJuZWwg Y29uZmlndXJlZCB3aXRoIENPTkZJR19QUkVFTVBULCBhbmQgYSBmYXN0Cj4gbW9kZW0gY29ubmVj dGVkIHdpdGggUFBQIHJ1bm5pbmcgb3ZlciBhIFVTQiBDREMtQUNNIHBvcnQuCj4gCj4gVXNlIHRl c3RfYW5kX2NsZWFyX2JpdCgpIGluc3RlYWQsIHdoaWNoIGVuc3VyZXMgdGhhdCBlYWNoIHdha2V1 cCByZXF1ZXN0ZWQKPiBieSB0aGUgVVJCIGNvbXBsZXRpb24gY29kZSB3aWxsIHRyaWdnZXIgYSBj YWxsIHRvIHR0eV9wb3J0X3R0eV93YWtldXAoKS4KPiAKPiBGaXhlczogMWFiYTU3OWYzY2Y1IGNk Yy1hY206IGhhbmRsZSByZWFkIHBpcGUgZXJyb3JzCj4gU2lnbmVkLW9mZi1ieTogUm9tYWluIEl6 YXJkIDxyb21haW4uaXphcmQucHJvQGdtYWlsLmNvbT4KQWNrZWQtYnk6IE9saXZlciBOZXVrdW0g PG9uZXVrdW1Ac3VzZS5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvdXNiL2NsYXNzL2NkYy1hY20uYyB8 IDQgKy0tLQo+ICAxIGZpbGUgY2hhbmdlZCwgMSBpbnNlcnRpb24oKyksIDMgZGVsZXRpb25zKC0p Cj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNiL2NsYXNzL2NkYy1hY20uYyBiL2RyaXZlcnMv dXNiL2NsYXNzL2NkYy1hY20uYwo+IGluZGV4IDczOWY4OTYwODExYS4uZWM2NjZlYjRiN2I0IDEw MDY0NAo+IC0tLSBhL2RyaXZlcnMvdXNiL2NsYXNzL2NkYy1hY20uYwo+ICsrKyBiL2RyaXZlcnMv dXNiL2NsYXNzL2NkYy1hY20uYwo+IEBAIC01NTgsMTAgKzU1OCw4IEBAIHN0YXRpYyB2b2lkIGFj bV9zb2Z0aW50KHN0cnVjdCB3b3JrX3N0cnVjdCAqd29yaykKPiAgCQljbGVhcl9iaXQoRVZFTlRf UlhfU1RBTEwsICZhY20tPmZsYWdzKTsKPiAgCX0KPiAgCj4gLQlpZiAodGVzdF9iaXQoRVZFTlRf VFRZX1dBS0VVUCwgJmFjbS0+ZmxhZ3MpKSB7Cj4gKwlpZiAodGVzdF9hbmRfY2xlYXJfYml0KEVW RU5UX1RUWV9XQUtFVVAsICZhY20tPmZsYWdzKSkKPiAgCQl0dHlfcG9ydF90dHlfd2FrZXVwKCZh Y20tPnBvcnQpOwo+IC0JCWNsZWFyX2JpdChFVkVOVF9UVFlfV0FLRVVQLCAmYWNtLT5mbGFncyk7 Cj4gLQl9Cj4gIH0KPiAgCj4gIC8qCg==