From: Gernot Hoyler <Gernot.Hoyler@spansion.com>
To: linux-mtd@lists.infradead.org
Cc: fransmeulenbroeks@gmail.com
Subject: Re: Re: protection on cfi-flash
Date: Tue, 24 Aug 2010 11:56:05 +0200 [thread overview]
Message-ID: <4C739735.3090408@spansion.com> (raw)
In-Reply-To: <AANLkTinWBxKC0F-awnJktD7JfJofg3XqT-1onPcQypws@mail.gmail.com>
> I would expect flash_erase to get some error code in that case and
> report it back (or if that is not possible do a readback of the data
> to see if the erase was successful).
Erasing or programing a locked sector does not immediately issue an
error on the S29GL01GP. The status you get from the device in this
case shows a couple of toggle bit cycles before it goes back to read
array mode.
It is the responsibility of higher layers to verify erase and/or program
operations. This verification step is done e.g. in flash file systems
but not in the MTD chip driver.
--Gernot
PS: Feel free to get in direct touch with me regarding adding locking
support to the AMD/Spansion chip driver. I can help you with this.
prev parent reply other threads:[~2010-08-24 9:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-05 8:01 protection on cfi-flash Frans Meulenbroeks
2010-08-24 9:56 ` Gernot Hoyler [this message]
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