Emil Obalski 3ed9dc3a24 usb: Fix for set/reset endpoints ... 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>		2020-02-12 14:40:40 +02:00
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device	usb: Fix for set/reset endpoints	2020-02-12 14:40:40 +02:00
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