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[91.155.214.58]) by smtp.gmail.com with ESMTPSA id h9sm6332180ljk.96.2020.03.30.01.15.04 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 30 Mar 2020 01:15:04 -0700 (PDT) From: Felipe Balbi To: Thinh Nguyen , Greg Kroah-Hartman , Thinh Nguyen , linux-usb@vger.kernel.org Cc: John Youn Subject: Re: [PATCH v2 0/4] usb: dwc3: gadget: Improve isoc starting mechanism In-Reply-To: References: Date: Mon, 30 Mar 2020 11:15:00 +0300 Message-ID: <87k1322r97.fsf@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Thinh Nguyen writes: > Currently we use the "retry" method to issue START_TRANSFER command multi= ple > times, each with a next interval. There's been report that 5 number of re= tries > may not be enough. See https://lkml.org/lkml/2019/11/11/535 > > We could increase the number of retries. However, that also may not be en= ough > depending on different system latency. It is not often that the latency is > higher than 5 isoc intervals. If it goes beyond 5 intervals, let's restar= t the > whole process again. > > > Changes in v2: > - Include patch "usb: dwc3: gadget: WARN on no-resource status" to this = series > > Thinh Nguyen (4): > usb: dwc3: gadget: Properly handle failed kick_transfer > usb: dwc3: gadget: Store resource index of start cmd > usb: dwc3: gadget: Issue END_TRANSFER to retry isoc transfer > usb: dwc3: gadget: WARN on no-resource status all in testing/next now =2D-=20 balbi --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEElLzh7wn96CXwjh2IzL64meEamQYFAl6BqoQACgkQzL64meEa mQZgGBAAoK/suvU4s9jXUUaov6Nwzxu3q6kV0RYeecfzBPwDB1ZWwGS98t397wMY ls45DUYaBCoq/GVVJuQjV1G2SOXCZwfQNYKe+XchzBzpD9wBZS1KkQEA7Aznr97T aPg4lzAOkm4xgXksKBiXZbwO91j1I1vPzNDJHJljZeRprrPVKl3eWR6kqAiu4dff KSFQp73I8tY8hCliffIcnzfk0dOXgnHTvpQ4Ya74xAd7mff3r1wWgpmDVbTWsICy giJUe+F3HUSDtajtZ2sZn+3gWREF08oQNqWtDWwujA8lwflNgeEh2ZkiZeIjzZI1 1vy8IfiAdHaY5ve5HcCAUZ/2Da2lhq/T2V8zn6CDcXRr024knby47zjEGcm/wwra 9CCXWFX9EfIGnDflzgugUnoCjLwXadzoIyNA8kxNpPmKvXjlhWuaJRt/Dho4+VAo 6AZ/2iL1Aytjny96L1anV8ThM4iSaIs9yZbHiA+OU7N7ZVohUDsGRuynBRnDWesK w0LviS8L4PGIMHfFhUxwjbaF2CSAJ/awNLg0Xn8I5APz5bEqK/AWtltCOYX8ukZ0 lsn1/tTVY4yjauf8UfPlQ3j0snUqaLHbHB0N/EUM9vtXlYzeQUntCAaEhtB4f6nV PLXSW7HrECR70EuV/ZfHFEkNI9wYEjPMH6iHKCS7zdNWBkC7RXQ= =uSNG -----END PGP SIGNATURE----- --=-=-=--