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    Subject[ 042/109] iommu/amd: Add missing spin_lock initialization
    Date
    From: Greg KH <gregkh@linuxfoundation.org>

    3.4-stable review patch. If anyone has any objections, please let me know.

    ------------------

    From: Joerg Roedel <joerg.roedel@amd.com>

    commit 2c13d47a1a7ee8808796016c617aef25fd1d1925 upstream.

    Add missing spin_lock initialization in
    amd_iommu_bind_pasid() function and make lockdep happy
    again.

    Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/iommu/amd_iommu_v2.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/drivers/iommu/amd_iommu_v2.c
    +++ b/drivers/iommu/amd_iommu_v2.c
    @@ -681,6 +681,8 @@ int amd_iommu_bind_pasid(struct pci_dev

    atomic_set(&pasid_state->count, 1);
    init_waitqueue_head(&pasid_state->wq);
    + spin_lock_init(&pasid_state->lock);
    +
    pasid_state->task = task;
    pasid_state->mm = get_task_mm(task);
    pasid_state->device_state = dev_state;



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