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: [v5] cdc-acm: fix abnormal DATA RX issue for Mediatek Preloader. From: Lars Melin Message-Id: <3465233a-1afd-8112-ebd6-78cceb426c9d@gmail.com> Date: Wed, 19 Dec 2018 10:31:49 +0700 To: Macpaul Lin Cc: Oliver Neukum , Andrey Arapov , Johan Hovold , Greg Kroah-Hartman , Mediatek WSD Upstream , linux-usb@vger.kernel.org, stable@vger.kernel.org List-ID: T24gMTIvMTkvMjAxOCAxMDoxNiwgTWFjcGF1bCBMaW4gd3JvdGU6CgouCj4gSGVyZSBjb21lcyB0 aGUgdmVyYm9zZSBsc3VzYiAtdiBkdW1wLgo+IAo+IEJ1cyAwMDEgRGV2aWNlIDAwMzogSUQgMGU4 ZDowMDAzIE1lZGlhVGVrIEluYy4gTVQ2MjI3IHBob25lCj4gWzQzMi8zMTYwXQo+IERldmljZSBE ZXNjcmlwdG9yOgo+ICAgIGJMZW5ndGggICAgICAgICAgICAgICAgMTgKPiAgICBiRGVzY3JpcHRv clR5cGUgICAgICAgICAxCj4gICAgYmNkVVNCICAgICAgICAgICAgICAgMS4xMAo+ICAgIGJEZXZp Y2VDbGFzcyAgICAgICAgICAgIDIgQ29tbXVuaWNhdGlvbnMKPiAgICBiRGV2aWNlU3ViQ2xhc3Mg ICAgICAgICAwCj4gICAgYkRldmljZVByb3RvY29sICAgICAgICAgMAo+ICAgIGJNYXhQYWNrZXRT aXplMCAgICAgICAgNjQKPiAgICBpZFZlbmRvciAgICAgICAgICAgMHgwZThkIE1lZGlhVGVrIElu Yy4KPiAgICBpZFByb2R1Y3QgICAgICAgICAgMHgwMDAzIE1UNjIyNyBwaG9uZQo+ICAgIGJjZERl dmljZSAgICAgICAgICAgIDEuMDAKPiAgICBpTWFudWZhY3R1cmVyICAgICAgICAgICAwCj4gICAg aVByb2R1Y3QgICAgICAgICAgICAgICAgMAo+ICAgIGlTZXJpYWwgICAgICAgICAgICAgICAgIDAK PiAgICBiTnVtQ29uZmlndXJhdGlvbnMgICAgICAxCj4gICAgQ29uZmlndXJhdGlvbiBEZXNjcmlw dG9yOgo+ICAgICAgYkxlbmd0aCAgICAgICAgICAgICAgICAgOQo+ICAgICAgYkRlc2NyaXB0b3JU eXBlICAgICAgICAgMgo+ICAgICAgd1RvdGFsTGVuZ3RoICAgICAgICAgICA2Nwo+ICAgICAgYk51 bUludGVyZmFjZXMgICAgICAgICAgMgo+ICAgICAgYkNvbmZpZ3VyYXRpb25WYWx1ZSAgICAgMQo+ ICAgICAgaUNvbmZpZ3VyYXRpb24gICAgICAgICAgMAo+ICAgICAgYm1BdHRyaWJ1dGVzICAgICAg ICAgMHg4MAo+ICAgICAgICAoQnVzIFBvd2VyZWQpCj4gICAgICBNYXhQb3dlciAgICAgICAgICAg ICAgICAwbUEKPiAgICAgIEludGVyZmFjZSBEZXNjcmlwdG9yOgo+ICAgICAgICBiTGVuZ3RoICAg ICAgICAgICAgICAgICA5Cj4gICAgICAgIGJEZXNjcmlwdG9yVHlwZSAgICAgICAgIDQKPiAgICAg ICAgYkludGVyZmFjZU51bWJlciAgICAgICAgMAo+ICAgICAgICBiQWx0ZXJuYXRlU2V0dGluZyAg ICAgICAwCj4gICAgICAgIGJOdW1FbmRwb2ludHMgICAgICAgICAgIDEKPiAgICAgICAgYkludGVy ZmFjZUNsYXNzICAgICAgICAgMiBDb21tdW5pY2F0aW9ucwo+ICAgICAgICBiSW50ZXJmYWNlU3Vi Q2xhc3MgICAgICAyIEFic3RyYWN0IChtb2RlbSkKPiAgICAgICAgYkludGVyZmFjZVByb3RvY29s ICAgICAgMSBBVC1jb21tYW5kcyAodi4yNXRlcikKPiAgICAgICAgaUludGVyZmFjZSAgICAgICAg ICAgICAgMSAoZXJyb3IpCj4gICAgICAgIENEQyBIZWFkZXI6Cj4gICAgICAgICAgYmNkQ0RDICAg ICAgICAgICAgICAgMS4xMAo+ICAgICAgICBDREMgQUNNOgo+ICAgICAgICAgIGJtQ2FwYWJpbGl0 aWVzICAgICAgIDB4MGYKPiAgICAgICAgICAgIGNvbm5lY3Rpb24gbm90aWZpY2F0aW9ucwo+ICAg ICAgICAgICAgc2VuZHMgYnJlYWsKPiAgICAgICAgICAgIGxpbmUgY29kaW5nIGFuZCBzZXJpYWwg c3RhdGUKPiAgICAgICAgICAgIGdldC9zZXQvY2xlYXIgY29tbSBmZWF0dXJlcwo+ICAgICAgICBD REMgVW5pb246Cj4gICAgICAgICAgYk1hc3RlckludGVyZmFjZSAgICAgICAgMAo+ICAgICAgICAg IGJTbGF2ZUludGVyZmFjZSAgICAgICAgIDEKPiAgICAgICAgQ0RDIENhbGwgTWFuYWdlbWVudDoK PiAgICAgICAgICBibUNhcGFiaWxpdGllcyAgICAgICAweDAzCj4gICAgICAgICAgICBjYWxsIG1h bmFnZW1lbnQKPiAgICAgICAgICAgIHVzZSBEYXRhSW50ZXJmYWNlCj4gICAgICAgICAgYkRhdGFJ bnRlcmZhY2UgICAgICAgICAgMQo+ICAgICAgICBFbmRwb2ludCBEZXNjcmlwdG9yOgo+ICAgICAg ICAgIGJMZW5ndGggICAgICAgICAgICAgICAgIDcKPiAgICAgICAgICBiRGVzY3JpcHRvclR5cGUg ICAgICAgICA1Cj4gICAgICAgICAgYkVuZHBvaW50QWRkcmVzcyAgICAgMHg4NCAgRVAgNCBJTgo+ ICAgICAgICAgIGJtQXR0cmlidXRlcyAgICAgICAgICAgIDMKPiAgICAgICAgICAgIFRyYW5zZmVy IFR5cGUgICAgICAgICAgICBJbnRlcnJ1cHQKPiAgICAgICAgICAgIFN5bmNoIFR5cGUgICAgICAg ICAgICAgICBOb25lCj4gICAgICAgICAgICBVc2FnZSBUeXBlICAgICAgICAgICAgICAgRGF0YQo+ ICAgICAgICAgIHdNYXhQYWNrZXRTaXplICAgICAweDAwNDAgIDF4IDY0IGJ5dGVzCj4gICAgICAg ICAgYkludGVydmFsICAgICAgICAgICAgICAgMQo+ICAgICAgSW50ZXJmYWNlIERlc2NyaXB0b3I6 Cj4gICAgICAgIGJMZW5ndGggICAgICAgICAgICAgICAgIDkKPiAgICAgICAgYkRlc2NyaXB0b3JU eXBlICAgICAgICAgNAo+ICAgICAgICBiSW50ZXJmYWNlTnVtYmVyICAgICAgICAxCj4gICAgICAg IGJBbHRlcm5hdGVTZXR0aW5nICAgICAgIDAKPiAgICAgICAgYk51bUVuZHBvaW50cyAgICAgICAg ICAgMgo+ICAgICAgICBiSW50ZXJmYWNlQ2xhc3MgICAgICAgIDEwIENEQyBEYXRhCj4gICAgICAg IGJJbnRlcmZhY2VTdWJDbGFzcyAgICAgIDAgVW51c2VkCj4gICAgICAgIGJJbnRlcmZhY2VQcm90 b2NvbCAgICAgIDAKPiAgICAgICAgaUludGVyZmFjZSAgICAgICAgICAgICAgMiAoZXJyb3IpCj4g ICAgICAgIEVuZHBvaW50IERlc2NyaXB0b3I6Cj4gICAgICAgICAgYkxlbmd0aCAgICAgICAgICAg ICAgICAgNwo+ICAgICAgICAgIGJEZXNjcmlwdG9yVHlwZSAgICAgICAgIDUKPiAgICAgICAgICBi RW5kcG9pbnRBZGRyZXNzICAgICAweDgxICBFUCAxIElOCj4gICAgICAgICAgYm1BdHRyaWJ1dGVz ICAgICAgICAgICAgMgo+ICAgICAgICAgICAgVHJhbnNmZXIgVHlwZSAgICAgICAgICAgIEJ1bGsK PiAgICAgICAgICAgIFN5bmNoIFR5cGUgICAgICAgICAgICAgICBOb25lCj4gICAgICAgICAgICBV c2FnZSBUeXBlICAgICAgICAgICAgICAgRGF0YQo+ICAgICAgICAgIHdNYXhQYWNrZXRTaXplICAg ICAweDAyMDAgIDF4IDUxMiBieXRlcwo+ICAgICAgICAgIGJJbnRlcnZhbCAgICAgICAgICAgICAg IDAKPiAgICAgICAgRW5kcG9pbnQgRGVzY3JpcHRvcjoKPiAgICAgICAgICBiTGVuZ3RoICAgICAg ICAgICAgICAgICA3Cj4gICAgICAgICAgYkRlc2NyaXB0b3JUeXBlICAgICAgICAgNQo+ICAgICAg ICAgIGJFbmRwb2ludEFkZHJlc3MgICAgIDB4MDEgIEVQIDEgT1VUCj4gICAgICAgICAgYm1BdHRy aWJ1dGVzICAgICAgICAgICAgMgo+ICAgICAgICAgICAgVHJhbnNmZXIgVHlwZSAgICAgICAgICAg IEJ1bGsKPiAgICAgICAgICAgIFN5bmNoIFR5cGUgICAgICAgICAgICAgICBOb25lCj4gICAgICAg ICAgICBVc2FnZSBUeXBlICAgICAgICAgICAgICAgRGF0YQo+ICAgICAgICAgIHdNYXhQYWNrZXRT aXplICAgICAweDAyMDAgIDF4IDUxMiBieXRlcwo+ICAgICAgICAgIGJJbnRlcnZhbCAgICAgICAg ICAgICAgIDAKPiBEZXZpY2UgU3RhdHVzOiAgICAgMHg3NDEwCj4gICAgKEJ1cyBQb3dlcmVkKQoK PiBSZWdhcmRzLAo+IE1hY3BhdWwgTGluCj4gCgpIaSBNYWNwYXVsLAp5b3VyIHZlcmJvc2UgdXNi IGxpc3Rpbmcgc2hvdyBtZSB0aGF0IE1lZGlhdGVrIGhhcyBtYWRlIHR3byBkaWZmZXJlbnQgCjBl OGQ6MDAzIGRldmljZXMsIHNlZSBteSB2ZXJib3NlIGxzdXNiIGxpc3RpbmcgYmVsb3cuCihOb3Rp Y2UgYWxzbyB0aGUgcmV2ZXJzZSBvcmRlciBmb3IgY21kIGFuZCBkYXRhIGludGVyZmFjZXMgaW4g aXQgCmNvbXBhcmVkIHRvIHlvdXJzKS4KVVNCIGlkJ3MgYXJlIGludGVuZGVkIHRvIGlkZW50aWZ5 IGEgZGV2aWNlIGFuZCBpdHMgbmVlZHMgc28gdGhlcmUgc2hvdWxkCm5ldmVyIGJlIG1vcmUgdGhh biBvbmUgdW5pcXVlIGRldmljZSBwZXIgaWQuCgoKRmFpcnBob25lIEZQLTEsIE1UNjIyNyAgKG5v IENEQyB1bmlvbiAhISEpCgoKTUlfMDAgVVNCIFNpbmdsZSBQb3J0CgoKQnVzIDAwMSBEZXZpY2Ug MDA0OiBJRCAwZThkOjAwMDMKRGV2aWNlIERlc2NyaXB0b3I6CiAgIGJMZW5ndGggICAgICAgICAg ICAgICAgMTgKICAgYkRlc2NyaXB0b3JUeXBlICAgICAgICAgMQogICBiY2RVU0IgICAgICAgICAg ICAgICAxLjEwCiAgIGJEZXZpY2VDbGFzcyAgICAgICAgICAgIDIgQ29tbXVuaWNhdGlvbnMKICAg YkRldmljZVN1YkNsYXNzICAgICAgICAgMAogICBiRGV2aWNlUHJvdG9jb2wgICAgICAgICAwCiAg IGJNYXhQYWNrZXRTaXplMCAgICAgICAgIDgKICAgaWRWZW5kb3IgICAgICAgICAgIDB4MGU4ZAog ICBpZFByb2R1Y3QgICAgICAgICAgMHgwMDAzCiAgIGJjZERldmljZSAgICAgICAgICAgIDAuMDEK ICAgaU1hbnVmYWN0dXJlciAgICAgICAgICAgMyBNZWRpYVRlayBJbmMKICAgaVByb2R1Y3QgICAg ICAgICAgICAgICAgNCBTRUFUVExFCiAgIGlTZXJpYWwgICAgICAgICAgICAgICAgIDUgNTM0NTc0 MDAxMDA0CiAgIGJOdW1Db25maWd1cmF0aW9ucyAgICAgIDEKICAgQ29uZmlndXJhdGlvbiBEZXNj cmlwdG9yOgogICAgIGJMZW5ndGggICAgICAgICAgICAgICAgIDkKICAgICBiRGVzY3JpcHRvclR5 cGUgICAgICAgICAyCiAgICAgd1RvdGFsTGVuZ3RoICAgICAgICAgICA2NwogICAgIGJOdW1JbnRl cmZhY2VzICAgICAgICAgIDIKICAgICBiQ29uZmlndXJhdGlvblZhbHVlICAgICAxCiAgICAgaUNv bmZpZ3VyYXRpb24gICAgICAgICAgMAogICAgIGJtQXR0cmlidXRlcyAgICAgICAgIDB4ODAKICAg ICAgIChCdXMgUG93ZXJlZCkKICAgICBNYXhQb3dlciAgICAgICAgICAgICAgNTAwbUEKCiAgICAg SW50ZXJmYWNlIERlc2NyaXB0b3I6CiAgICAgICBiTGVuZ3RoICAgICAgICAgICAgICAgICA5CiAg ICAgICBiRGVzY3JpcHRvclR5cGUgICAgICAgICA0CiAgICAgICBiSW50ZXJmYWNlTnVtYmVyICAg ICAgICAwCiAgICAgICBiQWx0ZXJuYXRlU2V0dGluZyAgICAgICAwCiAgICAgICBiTnVtRW5kcG9p bnRzICAgICAgICAgICAyCiAgICAgICBiSW50ZXJmYWNlQ2xhc3MgICAgICAgIDEwIERhdGEKICAg ICAgIGJJbnRlcmZhY2VTdWJDbGFzcyAgICAgIDAgVW51c2VkCiAgICAgICBiSW50ZXJmYWNlUHJv dG9jb2wgICAgICAwCiAgICAgICBpSW50ZXJmYWNlICAgICAgICAgICAgICAxIDYyMThCIENPTQog ICAgICAgRW5kcG9pbnQgRGVzY3JpcHRvcjoKICAgICAgICAgYkxlbmd0aCAgICAgICAgICAgICAg ICAgNwogICAgICAgICBiRGVzY3JpcHRvclR5cGUgICAgICAgICA1CiAgICAgICAgIGJFbmRwb2lu dEFkZHJlc3MgICAgIDB4ODEgIEVQIDEgSU4KICAgICAgICAgYm1BdHRyaWJ1dGVzICAgICAgICAg ICAgMgogICAgICAgICAgIFRyYW5zZmVyIFR5cGUgICAgICAgICAgICBCdWxrCiAgICAgICAgICAg U3luY2ggVHlwZSAgICAgICAgICAgICAgIE5vbmUKICAgICAgICAgICBVc2FnZSBUeXBlICAgICAg ICAgICAgICAgRGF0YQogICAgICAgICB3TWF4UGFja2V0U2l6ZSAgICAgMHgwMDQwICAxeCA2NCBi eXRlcwogICAgICAgICBiSW50ZXJ2YWwgICAgICAgICAgICAgICAwCiAgICAgICBFbmRwb2ludCBE ZXNjcmlwdG9yOgogICAgICAgICBiTGVuZ3RoICAgICAgICAgICAgICAgICA3CiAgICAgICAgIGJE ZXNjcmlwdG9yVHlwZSAgICAgICAgIDUKICAgICAgICAgYkVuZHBvaW50QWRkcmVzcyAgICAgMHgw MSAgRVAgMSBPVVQKICAgICAgICAgYm1BdHRyaWJ1dGVzICAgICAgICAgICAgMgogICAgICAgICAg IFRyYW5zZmVyIFR5cGUgICAgICAgICAgICBCdWxrCiAgICAgICAgICAgU3luY2ggVHlwZSAgICAg ICAgICAgICAgIE5vbmUKICAgICAgICAgICBVc2FnZSBUeXBlICAgICAgICAgICAgICAgRGF0YQog ICAgICAgICB3TWF4UGFja2V0U2l6ZSAgICAgMHgwMDQwICAxeCA2NCBieXRlcwogICAgICAgICBi SW50ZXJ2YWwgICAgICAgICAgICAgICAwCgogICAgIEludGVyZmFjZSBEZXNjcmlwdG9yOgogICAg ICAgYkxlbmd0aCAgICAgICAgICAgICAgICAyOAogICAgICAgYkRlc2NyaXB0b3JUeXBlICAgICAg ICAgNAogICAgICAgYkludGVyZmFjZU51bWJlciAgICAgICAgMQogICAgICAgYkFsdGVybmF0ZVNl dHRpbmcgICAgICAgMAogICAgICAgYk51bUVuZHBvaW50cyAgICAgICAgICAgMQogICAgICAgYklu dGVyZmFjZUNsYXNzICAgICAgICAgMiBDb21tdW5pY2F0aW9ucwogICAgICAgYkludGVyZmFjZVN1 YkNsYXNzICAgICAgMiBBYnN0cmFjdCAobW9kZW0pCiAgICAgICBiSW50ZXJmYWNlUHJvdG9jb2wg ICAgICAxIEFULWNvbW1hbmRzICh2LjI1dGVyKQogICAgICAgaUludGVyZmFjZSAgICAgICAgICAg ICAgMiA2MjE4QiBDT00KICAgICAgIEVuZHBvaW50IERlc2NyaXB0b3I6CiAgICAgICAgIGJMZW5n dGggICAgICAgICAgICAgICAgIDcKICAgICAgICAgYkRlc2NyaXB0b3JUeXBlICAgICAgICAgNQog ICAgICAgICBiRW5kcG9pbnRBZGRyZXNzICAgICAweDgzICBFUCAzIElOCiAgICAgICAgIGJtQXR0 cmlidXRlcyAgICAgICAgICAgIDMKICAgICAgICAgICBUcmFuc2ZlciBUeXBlICAgICAgICAgICAg SW50ZXJydXB0CiAgICAgICAgICAgU3luY2ggVHlwZSAgICAgICAgICAgICAgIE5vbmUKICAgICAg ICAgICBVc2FnZSBUeXBlICAgICAgICAgICAgICAgRGF0YQogICAgICAgICB3TWF4UGFja2V0U2l6 ZSAgICAgMHgwMDA4ICAxeCA4IGJ5dGVzCiAgICAgICAgIGJJbnRlcnZhbCAgICAgICAgICAgICAg IDEKRGV2aWNlIFN0YXR1czogICAgIDB4MDAwMAogICAoQnVzIFBvd2VyZWQpCgoKL0xhcnMK