Return PTR_ERR(led_dat->pwm) instead of 0 if pwm_request failed Signed-off-by: Axel Lin <[email protected]> Cc: Richard Purdie <[email protected]> Cc: Luotao Fu <[email protected]> Cc: Reviewed-by: Dmitry Torokhov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>