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	u32 max_pkt_size;	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	u64 vmbus_next_request_id(struct vmbus_channel *channel, u64 rqst_addr);	1060	u64 vmbus_next_request_id(struct vmbus_channel *channel, u64 rqst_addr);
1046	u64 __vmbus_request_addr_match(struct vmbus_channel *channel, u64 trans_id,	1061	u64 __vmbus_request_addr_match(struct vmbus_channel *channel, u64 trans_id,
1047	u64 rqst_addr);	1062	u64 rqst_addr);