With an Arduino Leonardo compatible board attached alongside a
CyberPower CP1500PFCLCD, usbhid-ups would incorrectly conclude that
there was no kernel driver attached to the UPS and then fail subsequent
steps accordingly.

The cause is the global usb_communication_subdriver_t struct; when a
subdriver (e.g. arduino-hid) sets different values during the
enumeration loop, they're not set back to defaults afterwards, causing
issues with other subdrivers (e.g. cps-hid).

So, if a subdriver doesn't match, set a selection of fields back to
their default values using the newly added nut_usb_subdriver_defaults()
before the next attempt.

Signed-off-by: Matt Merhar <[email protected]>

With an Arduino Leonardo compatible board attached alongside a CyberPower CP1500PFCLCD, usbhid-ups would incorrectly conclude that there was no kernel driver attached to the UPS and then fail subsequent steps accordingly.

The cause is the global usb_communication_subdriver_t struct; when a subdriver (e.g. arduino-hid) sets different values during the enumeration loop, they're not set back to defaults afterwards, causing issues with other subdrivers (e.g. cps-hid).

So, if a subdriver doesn't match, set a selection of fields back to their default values using the newly added nut_usb_subdriver_defaults() before the next attempt.

// tofurky

Signed-off-by: Jim Klimov <[email protected]>

…on style [networkupstools#2611]

Signed-off-by: Jim Klimov <[email protected]>