The return value of mcp23s08_read_regs() can only be evaluated when signed
Signed-off-by: NRoel Kluin <12o3l@tiscali.nl>
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>