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From: Frederic Gobry <frederic.gobry@smartdata.ch>
To: linux-mtd@lists.infradead.org
Subject: Re: mmap question
Date: Thu, 11 Jul 2002 18:19:10 +0200	[thread overview]
Message-ID: <20020711161909.GA8143@rhin> (raw)
In-Reply-To: <20020701131443.GA10227@rhin>

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Hi,

I don't despair having an answer to at least one of my questions :-)

I implemented mmap on a mtd device (via a simple remap_page_range). I
have a userland program that opens and mmap a mtd device with success,
and can read-access it correctly. But once I perform a MEMERASE ioctl
or a simple write, the process only reads series of 0x80 bytes. If I
restart the process, it continues reading this value (even before any
erase/write operation) unless I reboot.

Do anybody have a clue about this behavior ?

My setup: ARM process (OMAP1510 board),  MTD device uses cfi_probe 

Thanks in advance,
Frédéric

-- 
Frédéric Gobry    SMARTDATA    	  
      ---         http://www.smartdata.ch
Software Engineer Lausanne - Switzerland
                  +41 21 693 84 98
				  

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  reply	other threads:[~2002-07-11 16:19 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-06-04 13:22 mmap question Frederic Gobry
2002-07-01 13:14 ` Frederic Gobry
2002-07-11 16:19   ` Frederic Gobry [this message]
2002-07-11 19:15     ` Jörn Engel
2002-07-12  7:57       ` Frederic Gobry
2002-07-12 15:08         ` Jörn Engel
2002-07-15  7:41           ` Frederic Gobry
2002-07-12 15:21         ` David Woodhouse
  -- strict thread matches above, loose matches on Subject: below --
2002-09-24  7:26 Der Herr Hofrat
2002-09-24  8:54 ` Der Herr Hofrat
2002-09-24  9:37 ` Zhonghua Dai
2005-03-21 17:59 Eric Van Hensbergen
2005-03-21 21:33 ` Bryan Henderson
2005-03-21 22:23   ` Matthew Wilcox
2005-03-21 23:18     ` Bryan Henderson
     [not found]   ` <a4e6962a05032114575776f94b@mail.gmail.com>
2005-03-21 22:57     ` Eric Van Hensbergen
2005-03-21 23:24       ` Bryan Henderson
2005-03-21 23:27       ` Bryan Henderson
2005-03-22 21:05         ` Eric Van Hensbergen
2005-03-21 23:56 ` Martin Jambor
2005-08-02 22:44 Ruslan Nikolaev

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