gpio/gpio-ich: fix ichx_gpio_check_available() return what callers expect
ichx_gpio_check_available() returns either 0 or -ENXIO depending on whether the given GPIO is available or not. However, callers of this function treat the return value as boolean: ... if (!ichx_gpio_check_available(gpio, nr)) return -ENXIO; which erroneusly fails when the GPIO is available and not vice versa. Fix this by making the function return boolean as expected by the callers. Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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