PCI: hv: Convert hv_pci_dev.refs from atomic_t to refcount_t (24196f0c) · Commits · 戴 / test

drivers/pci/host/pci-hyperv.c

+5 −4

Original line number	Diff line number	Diff line
		@@ -56,6 +56,7 @@
		#include <asm/apic.h>
		#include <linux/msi.h>
		#include <linux/hyperv.h>
		#include <linux/refcount.h>
		#include <asm/mshyperv.h>

		/*
		@@ -423,7 +424,7 @@ enum hv_pcidev_ref_reason {
		struct hv_pci_dev {
		/* List protected by pci_rescan_remove_lock */
		struct list_head list_entry;
		atomic_t refs;
		refcount_t refs;
		enum hv_pcichild_state state;
		struct pci_function_description desc;
		bool reported_missing;
		@@ -1262,13 +1263,13 @@ static void q_resource_requirements(void context, struct pci_response resp,
		static void get_pcichild(struct hv_pci_dev *hpdev,
		enum hv_pcidev_ref_reason reason)
		{
		atomic_inc(&hpdev->refs);
		refcount_inc(&hpdev->refs);
		}

		static void put_pcichild(struct hv_pci_dev *hpdev,
		enum hv_pcidev_ref_reason reason)
		{
		if (atomic_dec_and_test(&hpdev->refs))
		if (refcount_dec_and_test(&hpdev->refs))
		kfree(hpdev);
		}

		@@ -1322,7 +1323,7 @@ static struct hv_pci_dev new_pcichild_device(struct hv_pcibus_device hbus,
		wait_for_completion(&comp_pkt.host_event);

		hpdev->desc = *desc;
		get_pcichild(hpdev, hv_pcidev_ref_initial);
		refcount_set(&hpdev->refs, 1);
		get_pcichild(hpdev, hv_pcidev_ref_childlist);
		spin_lock_irqsave(&hbus->device_list_lock, flags);