[PATCH 1/1] Drivers:hv: Fix a bug in vmbus_driver_unregister()

From: K. Y. Srinivasan
Date: Tue Dec 27 2011 - 16:47:53 EST

The function vmbus_exists() was introduced recently to deal with cases where
the vmbus driver failed to initialize and yet other Hyper-V drivers attempted
to register with the vmbus bus driver. This patch introduced a bug where
vmbus_driver_unregister() would fail to unregister the driver. This patch
fixes the problem.

Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Fuzhou Chen <fuzhouch@xxxxxxxxxxxxx>
Cc: Sasha Levin <levinsasha928@xxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
drivers/hv/vmbus_drv.c | 5 +----
1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index c3875f7..a220e57 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -627,10 +627,7 @@ void vmbus_driver_unregister(struct hv_driver *hv_driver)
pr_info("unregistering driver %s\n", hv_driver->name);

if (!vmbus_exists())
- return;
- driver_unregister(&hv_driver->driver);
+ driver_unregister(&hv_driver->driver);


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