gpiolib: fix request related issue
Fix request-already-requested handling in gpio_request(). Signed-off-by: NMagnus Damm <damm@igel.co.jp> Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net> Cc: <stable@kernel.org> [2.6.28.x] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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