this patch get rid of cli()/sti(). while correcting this I found
that when a process wakes by an interrupt, pcf_pending doesn't
come back to 0 and next caller will return imediately. also,
there are other drivers with the exact same problem. if you
don't have any comments on this, I'll do the same for other
drivers.


[I2C] i2c-elektor: getting rid of cli()/sti() usage
Signed-off-by: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>