PCI: endpoint: Replace spinlock with mutex

The pci_epc_ops is not intended to be invoked from interrupt context. Hence replace spin_lock_irqsave and spin_unlock_irqrestore with mutex_lock and mutex_unlock respectively.

Kishon Vijay Abraham I committed 6 years ago

Commit 3d3248d1 parent 5779dd02 files · +34 −54Browse files

Showing the changes to include/linux (1 of 2 files). Show all

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include/linux/pci-epc.h+3−3

@@ -88,7 +88,7 @@ struct pci_epc_mem { · 87 unmodified lines
88	88	* @mem: address space of the endpoint controller
89	89	* @max_functions: max number of functions that can be configured in this EPC
90	90	* @group: configfs group representing the PCI EPC device
91		− * @lock: spinlock to protect pci_epc ops
	91	+ * @lock: mutex to protect pci_epc ops
92	92	* @notifier: used to notify EPF of any EPC events (like linkup)
93	93	*/
94	94	struct pci_epc {
@@ -98,8 +98,8 @@ struct pci_epc { · 3 unmodified lines
98	98	struct pci_epc_mem *mem;
99	99	u8 max_functions;
100	100	struct config_group *group;
101		− /* spinlock to protect against concurrent access of EP controller */
102		− spinlock_t lock;
	101	+ /* mutex to protect against concurrent access of EP controller */
	102	+ struct mutex lock;
103	103	struct atomic_notifier_head notifier;
104	104	};
105	105