drm/linux: Add atomic_dec_if_positive()
commitce3b43504848004321e2876c06f8177df869b470
authorFrançois Tigeot <ftigeot@wolfpond.org>
Tue, 10 Nov 2020 13:58:11 +0000 (10 14:58 +0100)
committerFrançois Tigeot <ftigeot@wolfpond.org>
Tue, 10 Nov 2020 13:58:11 +0000 (10 14:58 +0100)
treeb9e274a949a56213cd4bec7934c33cd3afd36d5f
parente0b6c445b04958dc3889e84cf9f34b5f370eae1a
drm/linux: Add atomic_dec_if_positive()

Obtained-from: FreeBSD
sys/dev/drm/include/linux/atomic.h