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From: David Woodhouse <dwmw2@infradead.org>
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To: Abraham vd Merwe <abraham@2d3d.co.za>
Cc: Frederic Giasson <fgiasson@mediatrix.com>,
    MTD for Linux <linux-mtd@lists.infradead.org>
Subject: Re: mtd_info->write 
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abraham@2d3d.co.za said:
> > If the data is all ones ("1"), it has been erased.   If not, it has
> > not.

> Yes, I know, but I want to know whether I have to check if that's the
> case or not. 

The chip driver is not required to check that the data are all ones. You 
are permitted to write to the same location of a chip repeatedly. If you 
write a 1 where previously there was a zero, obviously the result will be a 
zero. But that is not an error.

--
dwmw2