[riot-notifications] [RIOT-OS/RIOT] cpu/atmega_common: RTT and RTC support (#8842)

Marian Buschsieweke notifications at github.com
Thu Apr 18 17:41:18 CEST 2019

maribu requested changes on this pull request.

Please change the code to no longer use `volatile`. `volatile` will globally disable optimization for every access the status info, but does not solve the issue: Accesses to the status info remain racy. So all `volatile` does here is slowing things down for no reason at all.

See inline comments for detailed explanation.

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