[riot-notifications] [RIOT-OS/RIOT] cpu/nrf5x: enhance external HF clock source handling to allow for substantial energy savings (#15804)

benpicco notifications at github.com
Sun Jan 24 14:55:54 CET 2021

@benpicco commented on this pull request.

> +    --_hfxo_requests;
+    if (_hfxo_requests == 0) {

    if (_hfxo_requests && --_hfxo_requests == 0) {

to avoid the possibility of underflow. 

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