From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: [2.6.37 -> 2.6.38 regression] "mv64xxx: I2C bus locked, block: 1, time_left: 0" every few seconds Date: Tue, 31 Jan 2012 02:44:29 +0600 Message-ID: <20120131024429.2affbd1c@natsu> References: <20120101042401.4bef017e@natsu> <20120101073255.GA2402@elie.hsd1.il.comcast.net> <20120108004502.GA20549@ericsson.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4013045066879140383==" Return-path: In-Reply-To: <20120108004502.GA20549@ericsson.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Guenter Roeck Cc: Arnaud Patard , linux-kernel@vger.kernel.org, Jonathan Nieder , Manuel Roeder , Michael Ott , Rodolfo Giometti , Mauro Barella , linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org List-Id: linux-i2c@vger.kernel.org --===============4013045066879140383== Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/d_beU1UD.wwpuu792r=2Ei5"; protocol="application/pgp-signature" --Sig_/d_beU1UD.wwpuu792r=2Ei5 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sat, 7 Jan 2012 16:45:02 -0800 Guenter Roeck wrote: > > - Michael Ott reported with Debian kernel 2.6.38-3 (which is closely > > based on stable v2.6.38.2): > >=20 > > syslog tell me every few seconds: > > i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0 > >=20 > > - Manuel Roeder reported the same and found that upstream v2.6.38 > > triggers the problem and v2.6.37.6 does not. > >=20 > > - Roman Mamedov finds the bug present in Debian 3.1.6-1 (which > > is closely based on stable v3.1.6) and Debian 2.6.37-2 (based on > > stable v2.6.37.2) but not Debian 2.6.37-1 (based on mainline > > v2.6.37). > >=20 > > The regression range described above seems a little inconsistent to > > me, so maybe there's something more going on. > >=20 > Points to commit eda6bee6c7e67b5bd17bdbced0926f5687f686d5 (i2c-mv64xxx: s= end repeated START > between messages in xfer). Maybe you can back it out and see if it makes = a difference. Hello, I have just confirmed that the problem still occurs in the current 3.2.2, and is indeed solved by rolling-back the referred commit. Should be noted that beside the "I2C bus locked" messages in dmesg, the des= cribed problem manifested itself in the inability to read the temperature sensor value or = adjust the fan speed on the D-Link DNS-323. On all problematic kernels the built-in fan of= DNS-323 does not rotate and this risks overheating the device and disks installed in it. Thanks. --=20 With respect, Roman ~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Stallman had a printer, with code he could not see. So he began to tinker, and set the software free." --Sig_/d_beU1UD.wwpuu792r=2Ei5 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk8nAS0ACgkQTLKSvz+PZwhrDwCaAgcdz1dzLFwBNTf39vPNNLIQ NbcAn13HOhNfCAUqoL2HGNsRhOGieZSg =GrIB -----END PGP SIGNATURE----- --Sig_/d_beU1UD.wwpuu792r=2Ei5-- --===============4013045066879140383== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============4013045066879140383==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: rm@romanrm.ru (Roman Mamedov) Date: Tue, 31 Jan 2012 02:44:29 +0600 Subject: [2.6.37 -> 2.6.38 regression] "mv64xxx: I2C bus locked, block: 1, time_left: 0" every few seconds In-Reply-To: <20120108004502.GA20549@ericsson.com> References: <20120101042401.4bef017e@natsu> <20120101073255.GA2402@elie.hsd1.il.comcast.net> <20120108004502.GA20549@ericsson.com> Message-ID: <20120131024429.2affbd1c@natsu> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Sat, 7 Jan 2012 16:45:02 -0800 Guenter Roeck wrote: > > - Michael Ott reported with Debian kernel 2.6.38-3 (which is closely > > based on stable v2.6.38.2): > > > > syslog tell me every few seconds: > > i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0 > > > > - Manuel Roeder reported the same and found that upstream v2.6.38 > > triggers the problem and v2.6.37.6 does not. > > > > - Roman Mamedov finds the bug present in Debian 3.1.6-1 (which > > is closely based on stable v3.1.6) and Debian 2.6.37-2 (based on > > stable v2.6.37.2) but not Debian 2.6.37-1 (based on mainline > > v2.6.37). > > > > The regression range described above seems a little inconsistent to > > me, so maybe there's something more going on. > > > Points to commit eda6bee6c7e67b5bd17bdbced0926f5687f686d5 (i2c-mv64xxx: send repeated START > between messages in xfer). Maybe you can back it out and see if it makes a difference. Hello, I have just confirmed that the problem still occurs in the current 3.2.2, and is indeed solved by rolling-back the referred commit. Should be noted that beside the "I2C bus locked" messages in dmesg, the described problem manifested itself in the inability to read the temperature sensor value or adjust the fan speed on the D-Link DNS-323. On all problematic kernels the built-in fan of DNS-323 does not rotate and this risks overheating the device and disks installed in it. Thanks. -- With respect, Roman ~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Stallman had a printer, with code he could not see. So he began to tinker, and set the software free." -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: not available URL: From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754004Ab2A3U4k (ORCPT ); Mon, 30 Jan 2012 15:56:40 -0500 Received: from nyu.romanrm.ru ([91.206.142.121]:39376 "EHLO nyu.romanrm.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753381Ab2A3U4j (ORCPT ); Mon, 30 Jan 2012 15:56:39 -0500 Date: Tue, 31 Jan 2012 02:44:29 +0600 From: Roman Mamedov To: Guenter Roeck Cc: Jonathan Nieder , Arnaud Patard , linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Manuel Roeder , Michael Ott , Rodolfo Giometti , Mauro Barella Subject: Re: [2.6.37 -> 2.6.38 regression] "mv64xxx: I2C bus locked, block: 1, time_left: 0" every few seconds Message-ID: <20120131024429.2affbd1c@natsu> In-Reply-To: <20120108004502.GA20549@ericsson.com> References: <20120101042401.4bef017e@natsu> <20120101073255.GA2402@elie.hsd1.il.comcast.net> <20120108004502.GA20549@ericsson.com> Organization: http://version6.ru/ X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.8; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/d_beU1UD.wwpuu792r=2Ei5"; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/d_beU1UD.wwpuu792r=2Ei5 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sat, 7 Jan 2012 16:45:02 -0800 Guenter Roeck wrote: > > - Michael Ott reported with Debian kernel 2.6.38-3 (which is closely > > based on stable v2.6.38.2): > >=20 > > syslog tell me every few seconds: > > i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0 > >=20 > > - Manuel Roeder reported the same and found that upstream v2.6.38 > > triggers the problem and v2.6.37.6 does not. > >=20 > > - Roman Mamedov finds the bug present in Debian 3.1.6-1 (which > > is closely based on stable v3.1.6) and Debian 2.6.37-2 (based on > > stable v2.6.37.2) but not Debian 2.6.37-1 (based on mainline > > v2.6.37). > >=20 > > The regression range described above seems a little inconsistent to > > me, so maybe there's something more going on. > >=20 > Points to commit eda6bee6c7e67b5bd17bdbced0926f5687f686d5 (i2c-mv64xxx: s= end repeated START > between messages in xfer). Maybe you can back it out and see if it makes = a difference. Hello, I have just confirmed that the problem still occurs in the current 3.2.2, and is indeed solved by rolling-back the referred commit. Should be noted that beside the "I2C bus locked" messages in dmesg, the des= cribed problem manifested itself in the inability to read the temperature sensor value or = adjust the fan speed on the D-Link DNS-323. On all problematic kernels the built-in fan of= DNS-323 does not rotate and this risks overheating the device and disks installed in it. Thanks. --=20 With respect, Roman ~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Stallman had a printer, with code he could not see. So he began to tinker, and set the software free." --Sig_/d_beU1UD.wwpuu792r=2Ei5 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk8nAS0ACgkQTLKSvz+PZwhrDwCaAgcdz1dzLFwBNTf39vPNNLIQ NbcAn13HOhNfCAUqoL2HGNsRhOGieZSg =GrIB -----END PGP SIGNATURE----- --Sig_/d_beU1UD.wwpuu792r=2Ei5--