Drivers: hv: vmbus: Introduce {lock,unlock}_requestor()

To abtract the lock and unlock operations on the requestor spin lock. The helpers will come in handy in hv_pci. No functional change.

Andrea Parri (Microsoft) committed 4 years ago

Commit b91eaf71 parent 0aadb6a2 files · +20 −6Browse files

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@@ -1042,6 +1042,21 @@ struct vmbus_channel { · 1041 unmodified lines
1042	1042	u32 max_pkt_size;
1043	1043	};
1044	1044
	1045	+#define lock_requestor(channel, flags) \
	1046	+do { \
	1047	+ struct vmbus_requestor *rqstor = &(channel)->requestor; \
	1048	+ \
	1049	+ spin_lock_irqsave(&rqstor->req_lock, flags); \
	1050	+} while (0)
	1051	+
	1052	+static __always_inline void unlock_requestor(struct vmbus_channel *channel,
	1053	+ unsigned long flags)
	1054	+{
	1055	+ struct vmbus_requestor *rqstor = &channel->requestor;
	1056	+
	1057	+ spin_unlock_irqrestore(&rqstor->req_lock, flags);
	1058	+}
	1059	+
1045	1060	u64 vmbus_next_request_id(struct vmbus_channel *channel, u64 rqst_addr);
1046	1061	u64 __vmbus_request_addr_match(struct vmbus_channel *channel, u64 trans_id,
1047	1062	u64 rqst_addr);