Prevent outgoing traffic when stor dev is destroyed.

Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
Signed-off-by: Haiyang Zhang <haiya...@microsoft.com>
---
 drivers/staging/hv/hyperv_storage.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/hv/hyperv_storage.h 
b/drivers/staging/hv/hyperv_storage.h
index 6b20f1d..53b65be 100644
--- a/drivers/staging/hv/hyperv_storage.h
+++ b/drivers/staging/hv/hyperv_storage.h
@@ -296,7 +296,8 @@ static inline struct storvsc_device *get_out_stor_device(
 
        spin_lock_irqsave(&device->ext_lock, flags);
        stor_device = (struct storvsc_device *)device->ext;
-       if (stor_device && atomic_read(&stor_device->ref_count) > 1)
+       if (stor_device && (atomic_read(&stor_device->ref_count) > 1) &&
+               !stor_device->destroy)
                atomic_inc(&stor_device->ref_count);
        else
                stor_device = NULL;
-- 
1.7.4.1

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