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Commit 93e5bd06 authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman
Browse files

Drivers: hv: Make the vmbus driver unloadable 



It turns out that the vmbus driver can be made unloadable. Make it
unloadable.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 8b8ee675

drivers/hv/channel_mgmt.c

+11 −0
Original line number Diff line number Diff line
@@ -223,6 +223,17 @@ static void vmbus_process_rescind_offer(struct work_struct *work) 
	vmbus_device_unregister(channel->device_obj);

}



void vmbus_free_channels(void)

{

	struct vmbus_channel *channel;



	list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) {

		vmbus_device_unregister(channel->device_obj);

		kfree(channel->device_obj);

		free_channel(channel);

	}

}



/*

 * vmbus_process_offer - Process the offer by creating a channel/device

 * associated with this offer

drivers/hv/hv.c

+3 −0
Original line number Diff line number Diff line
@@ -237,6 +237,9 @@ void hv_cleanup(void) 
{

	union hv_x64_msr_hypercall_contents hypercall_msr;



	/* Reset our OS id */

	wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0);



	kfree(hv_context.signal_event_buffer);

	hv_context.signal_event_buffer = NULL;

	hv_context.signal_event_param = NULL;

drivers/hv/hyperv_vmbus.h

+1 −0
Original line number Diff line number Diff line
@@ -611,6 +611,7 @@ void vmbus_device_unregister(struct hv_device *device_obj); 


struct vmbus_channel *relid2channel(u32 relid);



void vmbus_free_channels(void);



/* Connection interface */

drivers/hv/vmbus_drv.c

+11 −0
Original line number Diff line number Diff line
@@ -795,8 +795,19 @@ static int __init hv_acpi_init(void) 
	return ret;

}



static void __exit vmbus_exit(void)

{



	free_irq(irq, hv_acpi_dev);

	vmbus_free_channels();

	bus_unregister(&hv_bus);

	hv_cleanup();

	acpi_bus_unregister_driver(&vmbus_acpi_driver);

}





MODULE_LICENSE("GPL");

MODULE_VERSION(HV_DRV_VERSION);



subsys_initcall(hv_acpi_init);

module_exit(vmbus_exit);