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: [v4] cdc-acm: fix abnormal DATA RX issue for Mediatek Preloader. From: macpaul.lin@mediatek.com Message-Id: <1545133087-5145-1-git-send-email-macpaul.lin@mediatek.com> Date: Tue, 18 Dec 2018 19:38:07 +0800 To: Johan Hovold , Oliver Neukum , Greg Kroah-Hartman , linux-usb@vger.kernel.org, stable@vger.kernel.org Cc: Mediatek WSD Upstream , Macpaul Lin List-ID: TWVkaWF0ZWsgUHJlbG9hZGVyIGlzIGEgcHJvcHJpZXRhcnkgZW1iZWRkZWQgYm9vdCBsb2FkZXIg Zm9yIGxvYWRpbmcKTGl0dGxlIEtlcm5lbCBhbmQgTGludXggaW50byBkZXZpY2UgRFJBTS4KClRo aXMgYm9vdCBsb2FkZXIgYWxzbyBoYW5kbGUgZmlybXdhcmUgdXBkYXRlLiBNZWRpYXRlayBQcmVs b2FkZXIgd2lsbCBiZQplbnVtZXJhdGVkIGFzIGEgdmlydHVhbCBDT00gcG9ydCB3aGVuIHRoZSBk ZXZpY2UgaXMgY29ubmVjdGVkIHRvIFdpbmRvd3MKb3IgTGludXggT1MgdmlhIENEQy1BQ00gY2xh c3MgZHJpdmVyLiBXaGVuIHRoZSBVU0IgZW51bWVyYXRpb24gaGFzIGJlZW4KZG9uZSwgTWVkaWF0 ZWsgUHJlbG9hZGVyIHdpbGwgc2VuZCBvdXQgaGFuZHNoYWtlIGNvbW1hbmQgIlJFQURZIiB0byBQ QwphY3RpdmVseSBpbnN0ZWFkIG9mIHdhaXRpbmcgY29tbWFuZCBmcm9tIHRoZSBkb3dubG9hZCB0 b29sLgpTaW5jZSBMaW51eCA0LjEyLCB0aGUgY29tbWl0ICJ0dHk6IHJlc2V0IHRlcm1pb3Mgc3Rh dGUgb24gZGV2aWNlCnJlZ2lzdHJhdGlvbiIgKDkzODU3ZWRkOTgyOWUxNDRhY2I2YzdlNzJkNTkz ZjZlMDFhZWFkNjYpIGNhdXNlcyBNZWRpYXRlawpQcmVsb2FkZXIgcmVjZWl2aW5nIHNvbWUgYWJu b3JhbWwgY29tbWFuZCBsaWtlICJSRUFEWVhYIiBhcyBpdCBzZW50LgpUaGlzIHdpbGwgYmUgcmVj b2duaXplZCBhcyBhbiBpbmNvcnJlY3QgcmVzcG9uc2UuIFRoZSBiZWhhdmlvciBjaGFuZ2UKYWxz byBjYXVzZXMgdGhlIGRvd25sb2FkIGhhbmRzaGFrZSBmYWlsLgoKQnkgZGlzYWJsaW5nIHRoZSBF Q0hPIHRlcm1pb3MgZmxhZyBjb3VsZCBhdm9pZCB0aGlzIHByb2JsZW0uIEhvd2V2ZXIsIGl0CmNh bm5vdCBiZSBkb25lIGJ5IHVzZXIgc3BhY2UgY29uZmlndXJhdGlvbiB3aGVuIGRvd25sb2FkIHRv b2wgb3BlbgovZGV2L3R0eUFDTTAuIFRoaXMgaXMgYmVjYXVzZSB0aGUgZGV2aWNlIHJ1bm5pbmcg TWVkaWF0ZWsgUHJlbG9hZGVyIHdpbGwKc2VuZCBoYW5kc2hha2UgY29tbWFuZCAiUkVBRFkiIGlt bWVkaWF0ZWx5IG9uY2UgdGhlIENEQy1BQ00gZHJpdmVyIGlzCnJlYWR5LgoKVGhpcyBwYXRjaCB3 YW50cyB0byBmaXggYWJvdmUgcHJvYmxlbSBieSBpbnRyb2R1Y2luZyAiRElTQUJMRV9FQ0hPIgpw cm9wZXJ0eSBpbiBkcml2ZXJfaW5mby4gV2hlbiBNZWRpYXRlayBQcmVsb2FkZXIgaXMgY29ubmVj dGVkLCB0aGUKQ0RDLUFDTSBkcml2ZXIgY291bGQgZGlzYWJsZSBFQ0hPIGZsYWcgaW4gdGVybWlv cyB0byBhdm9pZCB0aGUgcHJvYmxlbS4KClNpZ25lZC1vZmYtYnk6IE1hY3BhdWwgTGluIDxtYWNw YXVsLmxpbkBtZWRpYXRlay5jb20+Ci0tLQpDaGFuZ2VzIGZvciB2MjoKIC0gTW92ZSBxdWlya3Mg dGVzdGluZyBvZiBESVNBQkxFX0VDSE8gZmxhZyBpbnRvIGFjbV90dHlfaW5zdGFsbCgpLgogLSBD aGFuZ2UgcXVpcmtzIHRlc3RpbmcgaW50byBiaXR3aXNlIGNvbXBhcmlzb24uCkNoYW5nZXMgZm9y IHYzOgogLSBSZXBsYWNlIHF1aXJrcyB0ZXN0aW5nIGZyb20gaW5pdF90ZXJtaW9zIHRvIHR0eS0+ dGVybWlvcy4KIC0gUmVtb3ZlIHBhcmVudGhlc2lzIGZvciBFQ0hPIGZsYWcuCkNoYW5nZXMgZm9y IHY0OgogLSBEcm9wIHF1aXJrcyB2YXJpYmxlIHRvIHNpbXBsaWZ5IHRoZSBwYXRjaC4KIC0gTW92 ZSB0ZXJtaW9zIG9wZXJhdGlvbiByaWdodCBhZnRlciB0aGUgZHJpdmVyX2RhdGEgaGFzIGJlZW4g aW5zdGFsbGVkLgogLSBXcml0ZSBnZW5lcmFsIHN0eWxlIGNvbW1lbnQgZm9yIHN1cHByZXNzaW5n IGluaXRpYWwgZWNob2luZy4gCgogZHJpdmVycy91c2IvY2xhc3MvY2RjLWFjbS5jIHwgMTIgKysr KysrKysrKystCiBkcml2ZXJzL3VzYi9jbGFzcy9jZGMtYWNtLmggfCAgMSArCiAyIGZpbGVzIGNo YW5nZWQsIDEyIGluc2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKCmRpZmYgLS1naXQgYS9kcml2 ZXJzL3VzYi9jbGFzcy9jZGMtYWNtLmMgYi9kcml2ZXJzL3VzYi9jbGFzcy9jZGMtYWNtLmMKaW5k ZXggMWI2OGZlZC4uYWI4NjA5ZSAxMDA2NDQKLS0tIGEvZHJpdmVycy91c2IvY2xhc3MvY2RjLWFj bS5jCisrKyBiL2RyaXZlcnMvdXNiL2NsYXNzL2NkYy1hY20uYwpAQCAtNTgzLDYgKzU4MywxMyBA QCBzdGF0aWMgaW50IGFjbV90dHlfaW5zdGFsbChzdHJ1Y3QgdHR5X2RyaXZlciAqZHJpdmVyLCBz dHJ1Y3QgdHR5X3N0cnVjdCAqdHR5KQogCiAJdHR5LT5kcml2ZXJfZGF0YSA9IGFjbTsKIAorCS8q CisJICogU3VwcHJlc3MgaW5pdGlhbCBlY2hvaW5nIGZvciBzb21lIGRldmljZXMgd2hpY2ggbWln aHQgc2VuZCBkYXRhCisJICogaW1tZWRpYXRlbHkgYWZ0ZXIgYWNtIGRyaXZlciBoYXMgYmVlbiBp bnN0YWxsZWQuCisJICovCisJaWYgKGFjbS0+cXVpcmtzICYgRElTQUJMRV9FQ0hPKQorCQl0dHkt PnRlcm1pb3MuY19sZmxhZyAmPSB+RUNITzsKKwogCXJldHVybiAwOwogCiBlcnJvcl9pbml0X3Rl cm1pb3M6CkBAIC0xNjU1LDcgKzE2NjIsMTAgQEAgc3RhdGljIGludCBhY21fcHJlX3Jlc2V0KHN0 cnVjdCB1c2JfaW50ZXJmYWNlICppbnRmKQogCS5kcml2ZXJfaW5mbyA9IE5PX1VOSU9OX05PUk1B TCwgLyogaGFzIG5vIHVuaW9uIGRlc2NyaXB0b3IgKi8KIAl9LAogCXsgVVNCX0RFVklDRSgweDBl OGQsIDB4MDAwMyksIC8qIEZJUkVGTFksIE1lZGlhVGVrIEluYzsgYW5kcmV5LmFyYXBvdkBnbWFp bC5jb20gKi8KLQkuZHJpdmVyX2luZm8gPSBOT19VTklPTl9OT1JNQUwsIC8qIGhhcyBubyB1bmlv biBkZXNjcmlwdG9yICovCisJLmRyaXZlcl9pbmZvID0gRElTQUJMRV9FQ0hPLCAvKiBESVNBQkxF IEVDSE8gaW4gdGVybWlvcyBmbGFnICovCisJfSwKKwl7IFVTQl9ERVZJQ0UoMHgwZThkLCAweDIw MDApLCAvKiBGSVJFRkxZLCBNZWRpYVRlayBJbmM7IFByZWxvYWRlciAqLworCS5kcml2ZXJfaW5m byA9IERJU0FCTEVfRUNITywgLyogRElTQUJMRSBFQ0hPIGluIHRlcm1pb3MgZmxhZyAqLwogCX0s CiAJeyBVU0JfREVWSUNFKDB4MGU4ZCwgMHgzMzI5KSwgLyogTWVkaWFUZWsgSW5jIEdQUyAqLwog CS5kcml2ZXJfaW5mbyA9IE5PX1VOSU9OX05PUk1BTCwgLyogaGFzIG5vIHVuaW9uIGRlc2NyaXB0 b3IgKi8KZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNiL2NsYXNzL2NkYy1hY20uaCBiL2RyaXZlcnMv dXNiL2NsYXNzL2NkYy1hY20uaAppbmRleCBjYTA2YjIwLi41MTVhYWQwIDEwMDY0NAotLS0gYS9k cml2ZXJzL3VzYi9jbGFzcy9jZGMtYWNtLmgKKysrIGIvZHJpdmVycy91c2IvY2xhc3MvY2RjLWFj bS5oCkBAIC0xNDAsMyArMTQwLDQgQEAgc3RydWN0IGFjbSB7CiAjZGVmaW5lIFFVSVJLX0NPTlRS T0xfTElORV9TVEFURQlCSVQoNikKICNkZWZpbmUgQ0xFQVJfSEFMVF9DT05ESVRJT05TCQlCSVQo NykKICNkZWZpbmUgU0VORF9aRVJPX1BBQ0tFVAkJQklUKDgpCisjZGVmaW5lIERJU0FCTEVfRUNI TwkJCUJJVCg5KQo=