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From: "Matt Fleming" <mattjfleming@googlemail.com>
To: "Pierre Ossman" <drzeus-mmc@drzeus.cx>
Cc: linux-kernel@vger.kernel.org, dbrownell@users.sourceforge.net
Subject: Re: [RFC][PATCH] MMC: Use write timeout value as read from CSR
Date: Tue, 9 Sep 2008 10:42:53 +0100	[thread overview]
Message-ID: <5ff4a1e50809090242ha576dcdmf82d1e9ec2204178@mail.gmail.com> (raw)
In-Reply-To: <5ff4a1e50809090207o5846f5udf709eeda81653eb@mail.gmail.com>

2008/9/9 Matt Fleming <mattjfleming@googlemail.com>:
> 2008/9/9 Pierre Ossman <drzeus-mmc@drzeus.cx>:
>
>> Why do you have that part though? What case have you found where you
>> need the timeouts and do not have properly set timeout fields?
>>
>
> This check was put in place because the function was being called
> before the card structure was setup properly. I didn't actually work
> out the call path but it stopped the kmmcd thread oopsing :)
>

The stack trace where this check is needed is here,

mmc_get_timeout()
mmc_spi_readblock()
mmc_spi_request()
mmc_wait_for_req()
mmc_send_cxd_data()
mmc_send_csd()
mmc_attach_sd()

Maybe it would be a good idea to move the line at
drivers/mmc/core/mmc.c:447 up before the call to mmc_send_csd()? Then
it'd probably be possible to remove that !host->mmc->card check from
mmc_get_timeout().

  reply	other threads:[~2008-09-09  9:43 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-01 15:12 Matt Fleming
2008-09-07 10:38 ` Pierre Ossman
2008-09-08 13:28   ` Matt Fleming
2008-09-08 19:18     ` David Brownell
2008-09-09  7:22     ` Pierre Ossman
2008-09-09  7:34       ` Matt Fleming
2008-09-09  7:44         ` Pierre Ossman
2008-09-09  7:59           ` Matt Fleming
2008-09-09  8:55             ` Pierre Ossman
2008-09-09  9:07               ` Matt Fleming
2008-09-09  9:42                 ` Matt Fleming [this message]
2008-09-14 13:48                   ` Pierre Ossman
     [not found]                     ` <5ff4a1e50809150103v1e250e0x4192e2fe901750a6@mail.gmail.com>
     [not found]                       ` <20080915103821.2b618bba@mjolnir.drzeus.cx>
2008-09-15  9:24                         ` Matt Fleming
2008-09-20 11:06                           ` Pierre Ossman
2008-09-24 11:16                             ` Matt Fleming
2008-10-02  8:26                               ` Pierre Ossman

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