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Valid configurations for the extcon interrupt declarations are - usb_id - usb_vbus - (usb_id | usb_vbus) In the case of a standalone usb_id or usb_vbus failure to find one of the interrupts shouldn't generate a warning message. A warning is already in place if both IRQs are missing. Switch to using platform_get_irq_byname_optional() in order to facilitate this behaviour. Suggested-by: Marijn Suijten <marijn.suijten@somainline.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>