Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762861AbZFMLIo (ORCPT ); Sat, 13 Jun 2009 07:08:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751143AbZFMLIh (ORCPT ); Sat, 13 Jun 2009 07:08:37 -0400 Received: from 82-117-125-11.tcdsl.calypso.net ([82.117.125.11]:45096 "EHLO smtp.ossman.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751094AbZFMLIg (ORCPT ); Sat, 13 Jun 2009 07:08:36 -0400 Date: Sat, 13 Jun 2009 13:08:29 +0200 From: Pierre Ossman To: Wolfgang =?UTF-8?B?TcO8ZXM=?= Cc: "Andrew Morton" , "Matt Fleming" , "David Brownell" , "Mike Frysinger" , linux-kernel@vger.kernel.org Subject: Re: [PATCH] mmc_spi: fail gracefully if host or card do not support the switch command Message-ID: <20090613130829.49216355@mjolnir.ossman.eu> In-Reply-To: <200906111713.27504.wolfgang.mues@auerswald.de> References: <200906111713.27504.wolfgang.mues@auerswald.de> X-Mailer: Claws Mail 3.7.1 (GTK+ 2.16.1; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; protocol="application/pgp-signature"; boundary="=_freyr.ossman.eu-24991-1244891313-0001-2" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1903 Lines: 54 This is a MIME-formatted message. If you see this text it means that your E-mail software does not support MIME-formatted messages. --=_freyr.ossman.eu-24991-1244891313-0001-2 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Thu, 11 Jun 2009 16:13:27 +0100 Wolfgang M=C3=BCes wrote: > From: Wolfgang Muees >=20 > The switch command (typically speed switching from 25 to 50 MHz clock) > can be rejected by _both_ the host controller/driver and by the card. > Elder revisions of the SD card do not support speed switching. > Fail gracefully if the reject is comming from the card. >=20 > Signed-off-by: Wolfgang Muees >=20 Have you ever seen this in practice? For SD there are several checks before the switch command is actually issued. Sounds like there is something else wrong here. Have you turned off your EMP thingy? ;) PS. Please use the @ossman.eu address. Rgds --=20 -- Pierre Ossman WARNING: This correspondence is being monitored by the Swedish government. Make sure your server uses encryption for SMTP traffic and consider using PGP for end-to-end encryption. --=_freyr.ossman.eu-24991-1244891313-0001-2 Content-Type: application/pgp-signature; name="signature.asc" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (GNU/Linux) iEYEARECAAYFAkoziLEACgkQ7b8eESbyJLhhyACgoM5tDXlCS6icnTlr2hb+ewdN mvsAn0ydr2GYfZN0qvV0pz4M7L4CqQmn =eOyy -----END PGP SIGNATURE----- --=_freyr.ossman.eu-24991-1244891313-0001-2-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/