Current implementation attempts to request keys from the keyring even when
security is not enabled. Change behavior so when security is disabled it
will skip key request.

Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
 drivers/nvdimm/security.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/nvdimm/security.c b/drivers/nvdimm/security.c
index 9e45b207ff01..89b85970912d 100644
--- a/drivers/nvdimm/security.c
+++ b/drivers/nvdimm/security.c
@@ -177,6 +177,10 @@ static int __nvdimm_security_unlock(struct nvdimm *nvdimm)
                        || !nvdimm->sec.flags)
                return -EIO;
 
+       /* No need to go further if security is disabled */
+       if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags))
+               return 0;
+
        if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) {
                dev_dbg(dev, "Security operation in progress.\n");
                return -EBUSY;

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