On 1/13/22 11:17 PM, Mark Brown 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.
This is only a current difference but I'm still going to return 0 ISO -ENXIO from latform_get_irq_optional(), no way I'd leave that -ENXIO there alone... :-)
Reviewed-by: Mark Brown broonie@kernel.org
Hm... I'm seeing a tag bit not seeing the patch itself...
MBR, Sergey