gpio: Fix gpio direction flags not getting set

GPIO direction flags are not getting set because
an 'if' statement is the wrong way around.

Cc: Stable <stable@vger.kernel.org> # 3.15+
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 15cc0bb..3b54edf 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1674,7 +1674,7 @@
 		set_bit(FLAG_OPEN_SOURCE, &desc->flags);
 
 	/* No particular flag request, return here... */
-	if (flags & GPIOD_FLAGS_BIT_DIR_SET)
+	if (!(flags & GPIOD_FLAGS_BIT_DIR_SET))
 		return desc;
 
 	/* Process flags */