From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 748ED3BBC9 for ; Thu, 22 May 2025 06:57:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747897061; cv=none; b=tElhij1ov6Le/N/9dmsNCw5jbehA83G3M/kvdvTKv1j2uscLtcjjHC6Kqan8+nabm+BCV8dkAAGpXHyzUsccxKG2lb1T20UhesASBwkhh6EEW4Mu3LywcldGaNqF9Lddt4x7GFmwmF2rTbe4NfFVcYmigEMtFVbCKMOTggBEtIk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747897061; c=relaxed/simple; bh=lwTj+kwD88lf4sDXs77K5GCvwgzFI1BEY+NCuIqYLcE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=iZ9CN+ePW2otpN6kVCMmaPuRfj+P4R2HspkKQuh+FnLdX4HIDZRSEhxsI75yhHQB0UTREnbbbAuhXZTGGWI8dWSrm6IIxSpqzkBjqIJ7yB1rc7mqT9G9/DarqF8oUqM/ejD9+eXuFjbr+PqEKPdTxewJPx7NqCx2FARCS7Hvg+A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=jR+F/rxo; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="jR+F/rxo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to; s=k1; bh=lwTj +kwD88lf4sDXs77K5GCvwgzFI1BEY+NCuIqYLcE=; b=jR+F/rxoXRdAbJ6bZYL+ 8P2MHfBdLPeQm9MURvLd8xxqYCxUs7MG/J2j7GN5PhgzD4Z3KAogQSygaZdPr0Bz TS4GZDF2OBdk/Vh9WPVLH94SmoQL0czQC6753MWf4osDqRWPI9FuREEkn95zDaKa 2LZeYiGWY0AyBe+erE3oxfI1KYD+1dol29Ynb/nDnhzixBxXNFiiUJmb1W5DUtH9 1OdSZEwv6rbzoEd8+l1fETVR0oFOIRKJ14DK+LlrOC3avg/rhVg85Dr9JvnEyWUY dwFtcCoNGXKRxaVB6L9vUaSJCpV1bNK179jccPkzGL0gNV24/m3VT/Qww8GT4iWq Vg== Received: (qmail 3538860 invoked from network); 22 May 2025 08:57:37 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 22 May 2025 08:57:37 +0200 X-UD-Smtp-Session: l3s3148p1@1bMx/7M1prAgAwDPXwj7ADHm2wGe7qss Date: Thu, 22 May 2025 08:57:36 +0200 From: Wolfram Sang To: linux-i2c@vger.kernel.org Cc: Alan Stern , Nikita Zhandarovich , Andi Shyti Subject: Re: [PATCH] i2c: robotfuzz-osif: disable zero-length read messages Message-ID: Mail-Followup-To: Wolfram Sang , linux-i2c@vger.kernel.org, Alan Stern , Nikita Zhandarovich , Andi Shyti References: <20250522064234.3721-2-wsa+renesas@sang-engineering.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="rBb3F+D/Tl6AhZtL" Content-Disposition: inline In-Reply-To: <20250522064234.3721-2-wsa+renesas@sang-engineering.com> --rBb3F+D/Tl6AhZtL Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, May 22, 2025 at 08:42:35AM +0200, Wolfram Sang wrote: > This driver passes the length of an i2c_msg directly to > usb_control_msg(). If the message is now a read and of length 0, it > violates the USB protocol and a warning will be printed. Enable the > I2C_AQ_NO_ZERO_LEN_READ quirk for this adapter thus forbidding 0-length > read messages altogether. >=20 > Signed-off-by: Wolfram Sang Fixes: 83e53a8f120f ("i2c: Add bus driver for for OSIF USB i2c device.") --rBb3F+D/Tl6AhZtL Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmguyt0ACgkQFA3kzBSg KbbEKg/+J4bpbPsnwtcmA0QVeOdLVAZBW/qy3SISw0RO0fIGOwumwqTgg7HPRu/i uDFE0l5/sP8+bWYF6ZcFJ1Q5OCQJUGmyrnVoKmSvc/e0eIGNhs7VcbOYSkqTEnYD ah8UHsEvJnxyTYmyya3+YN9gnRIiV2UA+rQgIODYeOHi069aw5xXHK13CwZoBUwp l60WmNnkl+BnTP7a6tuAi4Enhs1VC/7t33xFHivYQYwpqSHS48GPjdtVtfyg1T1G HMcZdk88t8YoNng08fM3y+Oqj2nld6gNaqD60N9oqA8hoUV+fQ1eCVD8QS9Arv0/ 6nrM/Ak22GhKiyF0gbPXFc922MmzkDEm5mGF2wuIQ/DjgxwubiItZPezfHcdUw4F ks4fvGOW4aDBrqGzk7ET9hnFA/G4Db9DX0I2vhaV/whEeBJiMcZpSMcMiwnadWhL EDdkQyvunP3Aslmv5UwywwL0FBYJj9N6SUcpixJrFti3L/hEI7mY29HcPMsyx/0a aMZ5GxTU9hDcMFYlpZfAAHHBB7xNTgj5MJjwxkAvAh9zpkWyQog40hXQQRtsHcHq /ThXrgiBxKSf5cTI4uIMkOej735EYabxmNSnJ1+SKwXRq66O7xOQXFqQlvoBaEEN XSZcz7HPChhbDwxmRhikLeKlgF4YYusc62KrEjs9xuxp1OwqITw= =cKnE -----END PGP SIGNATURE----- --rBb3F+D/Tl6AhZtL--