setting/resetting endpoints is required when switching to alternate
interfaces. This is a common operation for usb audio class.
When audio device is enumerated host invokes set_interface request
to alternate with 0 endpoints associated. That operation lead to
disable never enabled endpoints. With previous solution error message
will appear.
This commit limits error messages to be present only if endpoint
was configured/enabled before and there was a problem when trying
to configure/enable it for the first time.
* Kinetis driver was updated with return error value when ep was
already configured/enabled.
* nxp driver updated with return error value when ep was already
enabled
* sam0 driver updated with return codes instead of magic numbers.
This is fix patch to #21741
Signed-off-by: Emil Obalski <emil.obalski@nordicsemi.no>
3ed9dc3a24