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    Subject[PATCH 083/117] Staging: hv: storvsc: Prevent outgoing traffic when stor dev is destroyed
    Date
    Prevent outgoing traffic when stor dev is destroyed.

    Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
    Signed-off-by: Haiyang Zhang <haiyangz@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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