From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxim Levitsky Subject: Re: [PATCH 2/2] mmc: fix mmc card disappearence on resume on ricoh mmc controllers Date: Tue, 08 Jun 2010 11:57:46 +0300 Message-ID: <1275987466.30596.13.camel@dell16> References: <1275859475.3151.4.camel@maxim-laptop> <1275859731-2898-2-git-send-email-maximlevitsky@gmail.com> <648846745cc9a3a023fa12f306caabf6@localhost> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wy0-f174.google.com ([74.125.82.174]:53560 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752206Ab0FHI54 (ORCPT ); Tue, 8 Jun 2010 04:57:56 -0400 In-Reply-To: <648846745cc9a3a023fa12f306caabf6@localhost> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Philip Langdale Cc: linux-mmc@vger.kernel.org, linux-kernel On Sun, 2010-06-06 at 19:22 -0400, Philip Langdale wrote: > On Mon, 7 Jun 2010 00:28:51 +0300, Maxim Levitsky > wrote: > > The reason was that it takes time for controller to detect the card. > > So wait a bit for the card to appear. > > In worst case scenario, when you suspend the system with mmc card, > > and actually remove it, the resume will be delayed maximum by 2 seconds > > I suspect it's probably sending an SD id command to the card and then that > has to time out on MMC cards. > > Acked-by: Philip Langdale Thanks! Note that I spoke too soon about it being perfect While mmc card that stays in slot now works fine, a card that is inserted while system is asleep, is detected, but then controller becomes confused, so card doesn't work. A reinsert does help though. Overall I need to work around some unusual delays imposed by controller due to unusual card detection. I'll sort that out eventually (and hope not to bring much ugliness to sdhci{,-pci}.c I think I update this patch to address both issues. Best regards, Maxim Levitsky