From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Subject: Re: Writing to AT24C64C EEPROM fails on RHEL based kernels Date: Mon, 7 Mar 2011 20:48:19 +0100 Message-ID: <20110307194819.GA17883@pengutronix.de> References: <4D753233.8060208@riverbed.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="W/nzBZO5zC0uMSeA" Return-path: Content-Disposition: inline In-Reply-To: <4D753233.8060208-DUeqMYwuH4dWk0Htik3J/w@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Munir Bandukwala Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-i2c@vger.kernel.org --W/nzBZO5zC0uMSeA Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > While looking for patches, I came accross > https://bugzilla.redhat.com/show_bug.cgi?id=3D182687 and adding an extra = delay > in the piix4_transaction function fixes the problem for me as well. So, this is not a problem anymore if I understand you correctly? > I think the problems are related, but any pointers would be appreciated. = I am > pasting information about my machine, please let me know if you guys needs > any more information This seems normal to me. The eeprom needs time to write the data. Any reaso= ns for not using the in-kernel eeprom driver (drivers/misc/eeprom/at24.c)? It deals with all of that (and probably more). Regards, Wolfram --=20 Pengutronix e.K. | Wolfram Sang | Industrial Linux Solutions | http://www.pengutronix.de/ | --W/nzBZO5zC0uMSeA Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAk11NoMACgkQD27XaX1/VRvZxgCgo+aHFh+l6ZkPKXfiHp5udJTv Q4AAoMBfz3XuFluHNQKRubQW+x2cZeT1 =uucj -----END PGP SIGNATURE----- --W/nzBZO5zC0uMSeA--