From: Artem Bityutskiy <dedekind@infradead.org>
To: Alexey Korolev <akorolev@infradead.org>
Cc: linux-mtd@lists.infradead.org
Subject: Re: 2nd problem with read_subpage() ?
Date: Tue, 29 Jul 2008 12:31:12 +0300 [thread overview]
Message-ID: <1217323872.3124.21.camel@sauron> (raw)
In-Reply-To: <1217323810.3124.19.camel@sauron>
On Tue, 2008-07-29 at 12:30 +0300, Artem Bityutskiy wrote:
> On Tue, 2008-07-29 at 09:53 +0300, Artem Bityutskiy wrote:
> > Glance at nand_do_read_ops():
> >
> >
> > if (likely(sndcmd)) {
> > chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
> > sndcmd = 0;
> > }
>
> Alexey,
>
> my investigation showed that this "random output" command is not
> supported by all flashes. ST-micro NANDs seems to support it
> (I checked 2 manuals), while Sumsung NANDs do not (checked manual
> for K9XXG08UXA). This means your implementation will break many
> systems and should be either fixed or reverted.
Note, the Samsung NAND I referred is a large page device.
--
Best regards,
Artem Bityutskiy (Битюцкий Артём)
next prev parent reply other threads:[~2008-07-29 9:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-29 6:53 2nd problem with read_subpage() ? Artem Bityutskiy
2008-07-29 9:30 ` Artem Bityutskiy
2008-07-29 9:31 ` Artem Bityutskiy [this message]
2008-07-29 9:50 ` Alexey Korolev
2008-07-29 10:32 ` Artem Bityutskiy
2008-07-29 9:45 ` Artem Bityutskiy
2008-07-29 9:54 ` Alexey Korolev
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