Re: [PATCH -stable] rt2x00: fix memory corruption in rf cache, add a sanity check

["John W. Linville" <linville@tuxdriver.com>]

On Fri, Aug 14, 2009 at 12:59:08PM +0200, Stanislaw Gruszka wrote:
> From: Pavel Roskin <proski@gnu.org>
> 
> Change rt2x00_rf_read() and rt2x00_rf_write() to subtract 1 from the rf
> register number.  This is needed because the rf registers are enumerated
> starting with one.  The size of the rf register cache is just enough to
> hold all registers, so writing to the highest register was corrupting
> memory.  Add a check to make sure that the rf register number is valid.
> 
> Signed-off-by: Pavel Roskin <proski@gnu.org>
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
> ---
> I think nobody send this patch against stable yet. I have problem with
> rt73usb memory corruption on 2.6.30, this patch solve it. Not sure if 
> patch is also useful for 2.6.27. 

Thanks for pointing this out, I missed the memory corruption comment.

Since this hasn't gone to Linus yet, I don't think the stable guys
will take it.  I'll add a "Cc: stable@kernel.org" when I send it to
Dave/Linus so that the stable guys will see it automatically.

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville@tuxdriver.com			might be all we have.  Be ready.