On Thu, Jan 13, 2022 at 08:43:58PM +0100, Uwe Kleine-König wrote: > The subsystems regulator, clk and gpio have the concept of a dummy > resource. For regulator, clk and gpio there is a semantic difference > between the regular _get() function and the _get_optional() variant. > (One might return the dummy resource, the other won't. Unfortunately > which one implements which isn't the same for these three.) The > difference between platform_get_irq() and platform_get_irq_optional() is > only that the former might emit an error message and the later won't. Reviewed-by: Mark Brown