From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754161AbbJZOrc (ORCPT ); Mon, 26 Oct 2015 10:47:32 -0400 Received: from sauhun.de ([89.238.76.85]:51867 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753719AbbJZOrb (ORCPT ); Mon, 26 Oct 2015 10:47:31 -0400 Date: Mon, 26 Oct 2015 15:47:26 +0100 From: Wolfram Sang To: Ludovic Desroches Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, nicolas.ferre@atmel.com, peda@lysator.liu.se, cyrille.pitchen@atmel.com Subject: Re: [PATCH v3] i2c: at91: manage unexpected RXRDY flag when starting a transfer Message-ID: <20151026144726.GB5588@katana> References: <20151022130847.GE1517@katana> <1445852312-28389-1-git-send-email-ludovic.desroches@atmel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NKoe5XOeduwbEQHU" Content-Disposition: inline In-Reply-To: <1445852312-28389-1-git-send-email-ludovic.desroches@atmel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --NKoe5XOeduwbEQHU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Oct 26, 2015 at 10:38:27AM +0100, Ludovic Desroches wrote: > In some cases, we could start a new i2c transfer with the RXRDY flag > set. It is not a clean state and it leads to print annoying error > messages even if there no real issue. The cause is only having garbage > data in the Receive Holding Register because of a weird behavior of the > RXRDY flag. >=20 > Signed-off-by: Ludovic Desroches > Fixes: 93563a6a71bb ("i2c: at91: fix a race condition when using the DMA > controller") > Reported-by: Peter Rosin > Tested-by: Peter Rosin > Cc: stable@vger.kernel.org #4.1 Applied to for-next, thanks! --NKoe5XOeduwbEQHU Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJWLjz+AAoJEBQN5MwUoCm2i8MQAImiYiIHMtD61s5SR4WSsOXB ZDmTOB9DHTd0kgVwjUJbQogOzEnnbwTtA/e7j9QFT9ca5xc30ymh6BYkEXk+hqHc hXFThLrUeH2ir1xDpmI+/xUj8vKhx897XwoC4ZLjEQXQ9FMjr2Pquq3HRSRb8Txs B8ALZoZqnWPMVl8I9/14ZxToXo0ECsr450IDmU7hWWdBOM9vIB8JpQsTgh+UeF0P Iu7vVj83TlK5lOXvuamZ9gaodSZjVdSok/sAVRHPC0yBlQC8U+5vNLYFs46qUdR+ vMIzAnqv9FUZrIanc22LyxQLssBrVJRGIGGsU/yRuwH1KslLXMp/csTibJr9qQT4 4jjeOU5YN5fEEOxTk1KEGKFGz/82AcRtWIk7lq3z9nMV+lass/qN3NFTn4L7lBvb 06jnzkpvLgX+q1+BcQ/20Xor6w4Y84HAM1wCaR0xGCk1GaDvdas8vNspv5muLhcf mb5FEbEdxbpr4lk0MOG/9KPnHffmi3q351b3OdEmByso6Zy5tKgPT5R46JwxEWbd sH2o0Yg16RP8HBg7nyqZadVn/UoLV9ESCPt3Rz7rIPxh/Uf7VwODzBCaxkOVSh+t EBIVD8ny5u4aNqxK+fNewAvkKMMbhxEDI57ZdSzPaKdFd9ky9QxN4jpEUMutHEfV CdynZC2EAlIkrBYIqd3K =UGM4 -----END PGP SIGNATURE----- --NKoe5XOeduwbEQHU--