Return-path: Received: from h1355771.stratoserver.net ([85.214.105.140]:52715 "EHLO h1355771.stratoserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750732Ab2FNGue (ORCPT ); Thu, 14 Jun 2012 02:50:34 -0400 Date: Thu, 14 Jun 2012 07:45:45 +0200 From: Andreas Kemnade To: hong zhang Cc: Dan Williams , linux-wireless@vger.kernel.org, dsd@laptop.org, libertas-dev@lists.infradead.org Subject: Re: poor performance with W2CBW003 (Marvell 8686) Message-ID: <20120614074545.105a459d@kemnade.info> (sfid-20120614_085037_174476_3BC3AC4E) In-Reply-To: <1339612748.69001.YahooMailClassic@web161703.mail.bf1.yahoo.com> References: <20120613194254.076268a8@kemnade.info> <1339612748.69001.YahooMailClassic@web161703.mail.bf1.yahoo.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/hnLahwjvpLBeE9xYX093dB4"; protocol="application/pgp-signature"; micalg=PGP-SHA1 Sender: linux-wireless-owner@vger.kernel.org List-ID: --Sig_/hnLahwjvpLBeE9xYX093dB4 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi, On Wed, 13 Jun 2012 11:39:08 -0700 (PDT) hong zhang wrote: > You have to identify problem caused by=20 > SDIO host controller or wifi driver. >=20 > If driver is working well in x86 with Roch SDIO, that means wifi driver i= s ok.=20 >=20 > You have to find out > 1. SDIO interface if using Interrupt or PIO Hmm, very interesting point, of course, there are interrupts. But after rea= ding the commit logs in the patched 2.6.32 kernel I see there is a patch enabling asynchronous *sdio* interrupts. That looks clearly suspicious.=20 > 2. 1 bit or 4 bit Hmm, 4bit. Greetings Andreas Kemnade --Sig_/hnLahwjvpLBeE9xYX093dB4 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAk/ZeooACgkQvUy8S31NDebPmgCeOZbPYKkwr8Xy7xhO2Ku/jysP qnUAnR65lNJ1eqFnWkNxiHCroJauERgK =nGiz -----END PGP SIGNATURE----- --Sig_/hnLahwjvpLBeE9xYX093dB4--