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Date: Tue, 4 Sep 2012 05:25:44 -0700
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Manavendra Nath Manav <mnm.kernel@gmail.com>
Cc: kernelnewbies@kernelnewbies.org, devel@driverdev.osuosl.org,
        Greg KH <gregkh@linuxfoundation.org>, linux-kernel@vger.kernel.org
Subject: Re: Why exported const value modified by another driver not updated
 in original driver
Message-ID: <20120904122544.GC19396@mwanda>
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On Tue, Sep 04, 2012 at 03:58:20PM +0530, Manavendra Nath Manav wrote:
> Is the above a genuine kernel bug, or i am missing something out here. Pls help.
> 

When you declare something as const then the compiler assumes it
really is const and uses a literal instead of reading from memory.
I'm surprised the compiler doesn't print a warning message.

It has to do with compilers, nothing to do with kernels.

regards,
dan carpenter