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mt76: mt7921: fix a leftover race in runtime-pm
[ Upstream commit 591cdcc ] Fix a possible race in mt7921_pm_power_save_work() if rx/tx napi schedules ps_work and we are currently accessing device register on a different cpu. Fixes: 1d8efc7 ("mt76: mt7921: introduce Runtime PM support") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Sasha Levin <sashal@kernel.org>
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