drivers/hv: Replace binary semaphore with mutex
[ Upstream commit 8aea7f82153d6f292add3eb4bd7ba8edcae5c7f7 ] At a slight footprint cost (24 vs 32 bytes), mutexes are more optimal than semaphores; it's also a nicer interface for mutual exclusion, which is why they are encouraged over binary semaphores, when possible. Replace the hyperv_mmio_lock, its semantics implies traditional lock ownership; that is, the lock owner is the same for both lock/unlock operations. Therefore it is safe to convert. Signed-off-by:Davidlohr Bueso <dbueso@suse.de> Signed-off-by:
Sasha Levin <sashal@kernel.org> Stable-dep-of: 73fe9073c0cc ("Drivers: hv: vmbus: Don't release fb_mmio resource in vmbus_free_mmio()") Signed-off-by:
Sasha Levin <sashal@kernel.org>
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