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authorDave Jiang <dave.jiang@intel.com>2019-09-24 10:34:49 -0700
committerDan Williams <dan.j.williams@intel.com>2019-09-24 10:30:10 -0700
commit674f31a352da5e9f621f757b9a89262f486533a0 (patch)
treef25b6549481ec5216506ad1af25266e6b2c630be /drivers/nvdimm
parentc42adf87e4e7ed77f6ffe288dc90f980d07d68df (diff)
downloadlinux-674f31a352da5e9f621f757b9a89262f486533a0.tar.bz2
libnvdimm: prevent nvdimm from requesting key when security is disabled
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. Error messages seen when no keys are installed and libnvdimm is loaded: request-key[4598]: Cannot find command to construct key 661489677 request-key[4606]: Cannot find command to construct key 34713726 Cc: stable@vger.kernel.org Fixes: 4c6926a23b76 ("acpi/nfit, libnvdimm: Add unlock of nvdimm support for Intel DIMMs") Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/156934642272.30222.5230162488753445916.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
-rw-r--r--drivers/nvdimm/security.c4
1 files changed, 4 insertions, 0 deletions
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;