gpio: fix build on CONFIG_GPIO_SYSFS=n
If CONFIG_GENERIC_GPIO=y && CONFIG_GPIO_SYSFS=n, gpio_export() in asm-generic/gpio.h refers -ENOSYS and causes build error. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -2,6 +2,7 @@
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#define _ASM_GENERIC_GPIO_H
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#include <linux/types.h>
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#include <linux/errno.h>
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#ifdef CONFIG_GPIOLIB
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