These copies already did a verify_area above.

- Remove unneeded breaks
- Fix double spin_unlock_irqrestore problem

Achieves the same result.  From Lenz Grimmer at Mysql AG

Plus with a little codeshuffling, we can do away with the
prototypes.

From Dave Richards (drichards@mahinetworks.com)

  "While diagnosing an MMX/FPU problem I found a minor problem in the
   code which diagnoses and generates signals for FPU exceptions.  On
   x86 Stack Fault Exception are a subclass of Invalid Operation.  Thus,
   the FPU status register will have both the SF and IF bits set when a
   stack fault occurs.  The code which turns FPU exceptions into signals
   was assuming IF would be clear".

From Hiroshi Miura <miurahr@nttdata.co.jp>

into home.osdl.org:/home/torvalds/v2.5/linux

From Marcelo E Magallon.

into home.osdl.org:/home/torvalds/v2.5/linux

From folks at VIA.

into tetrachloride.(none):/mnt/raid/src/kernel/2.5/trees/agpgart

into kernel.bkbits.net:/home/davem/sparc-2.5

into kernel.bkbits.net:/home/davem/net-2.5

The following patch has been floating around forever.  It is required
for several ARM framebuffer drivers, and several other drivers.  James
has indicated that this is the correct fix back in May.