From: Satya Tangirala <satyat@xxxxxxxxxx>
Handle any error from blk_ksm_register() in the callers. Previously,
the callers ignored the return value because blk_ksm_register() wouldn't
fail as long as the request_queue didn't have integrity support too, but
as this is no longer the case, it's safer for the callers to just handle
the return value appropriately.
Signed-off-by: Satya Tangirala <satyat@xxxxxxxxxx>
---
drivers/scsi/ufs/ufshcd-crypto.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd-crypto.c b/drivers/scsi/ufs/ufshcd-crypto.c
index d70cdcd35e43..0fcf9d6752f8 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.c
+++ b/drivers/scsi/ufs/ufshcd-crypto.c
@@ -233,6 +233,15 @@ void ufshcd_init_crypto(struct ufs_hba *hba)
void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
struct request_queue *q)
{
- if (hba->caps & UFSHCD_CAP_CRYPTO)
- blk_ksm_register(&hba->ksm, q);
+ if (hba->caps & UFSHCD_CAP_CRYPTO) {
+ /*
+ * This WARN_ON should never trigger since &hba->ksm won't be
+ * "empty" (i.e. will support at least 1 crypto capability), a
+ * UFS device's request queue doesn't support integrity, and
+ * it also satisfies all the block layer constraints (i.e.
+ * supports SG gaps, doesn't have chunk sectors, has a
+ * sufficiently large supported max_segments per bio)
+ */
+ WARN_ON(!blk_ksm_register(&hba->ksm, q));
+ }
}
--
2.25.1
