Index: share/man/man9/crypto_request.9
===================================================================
--- share/man/man9/crypto_request.9
+++ share/man/man9/crypto_request.9
@@ -473,17 +473,6 @@
 .Fn crypto_done .
 .It Fa crp_flags
 A bitmask of flags.
-The following flags are available in addition to flags discussed previously:
-.Bl -tag -width CRYPTO_F_DONE
-.It Dv CRYPTO_F_DONE
-Set by
-.Fa crypto_done
-before calling
-.Fa crp_callback .
-This flag is not very useful and will likely be removed in the future.
-It can only be safely checked from the callback routine at which point
-it is always set.
-.El
 .It Fa crp_cipher_key
 Pointer to a request-specific encryption key.
 If this value is not set,
Index: sys/contrib/openzfs/module/os/freebsd/zfs/crypto_os.c
===================================================================
--- sys/contrib/openzfs/module/os/freebsd/zfs/crypto_os.c
+++ sys/contrib/openzfs/module/os/freebsd/zfs/crypto_os.c
@@ -198,7 +198,6 @@
 			break;
 		}
 		crp->crp_etype = 0;
-		crp->crp_flags &= ~CRYPTO_F_DONE;
 		session->fs_done = false;
 #if __FreeBSD_version < 1300087
 		/*
Index: sys/opencrypto/crypto.c
===================================================================
--- sys/opencrypto/crypto.c
+++ sys/opencrypto/crypto.c
@@ -1273,8 +1273,6 @@
 	    crp->crp_obuf.cb_type <= CRYPTO_BUF_LAST,
 	    ("incoming crp with invalid output buffer type"));
 	KASSERT(crp->crp_etype == 0, ("incoming crp with error"));
-	KASSERT(!(crp->crp_flags & CRYPTO_F_DONE),
-	    ("incoming crp already done"));
 
 	csp = &crp->crp_session->csp;
 	cb_sanity(&crp->crp_buf, "input");
@@ -1669,7 +1667,6 @@
 {
 	struct cryptop *new;
 
-	MPASS((crp->crp_flags & CRYPTO_F_DONE) == 0);
 	new = crypto_getreq(cses, how);
 	if (new == NULL)
 		return (NULL);
@@ -1685,9 +1682,6 @@
 void
 crypto_done(struct cryptop *crp)
 {
-	KASSERT((crp->crp_flags & CRYPTO_F_DONE) == 0,
-		("crypto_done: op already done, flags 0x%x", crp->crp_flags));
-	crp->crp_flags |= CRYPTO_F_DONE;
 	if (crp->crp_etype != 0)
 		CRYPTOSTAT_INC(cs_errs);
 
Index: sys/opencrypto/cryptodev.h
===================================================================
--- sys/opencrypto/cryptodev.h
+++ sys/opencrypto/cryptodev.h
@@ -434,7 +434,7 @@
 	int		crp_flags;
 
 #define	CRYPTO_F_CBIMM		0x0010	/* Do callback immediately */
-#define	CRYPTO_F_DONE		0x0020	/* Operation completed */
+#define	CRYPTO_F_DONE		0x0020	/* Deprecated, do not use */
 #define	CRYPTO_F_CBIFSYNC	0x0040	/* Do CBIMM if op is synchronous */
 #define	CRYPTO_F_ASYNC_ORDERED	0x0100	/* Completions must happen in order */
 #define	CRYPTO_F_IV_SEPARATE	0x0200	/* Use crp_iv[] as IV. */
Index: sys/opencrypto/cryptodev.c
===================================================================
--- sys/opencrypto/cryptodev.c
+++ sys/opencrypto/cryptodev.c
@@ -826,7 +826,6 @@
 
 	if (crp->crp_etype == EAGAIN) {
 		crp->crp_etype = 0;
-		crp->crp_flags &= ~CRYPTO_F_DONE;
 		cod->done = false;
 		goto again;
 	}
@@ -1029,7 +1028,6 @@
 
 	if (crp->crp_etype == EAGAIN) {
 		crp->crp_etype = 0;
-		crp->crp_flags &= ~CRYPTO_F_DONE;
 		cod->done = false;
 		goto again;
 	}
Index: sys/opencrypto/ktls_ocf.c
===================================================================
--- sys/opencrypto/ktls_ocf.c
+++ sys/opencrypto/ktls_ocf.c
@@ -222,7 +222,6 @@
 		}
 
 		crp->crp_etype = 0;
-		crp->crp_flags &= ~CRYPTO_F_DONE;
 		oo.done = false;
 		counter_u64_add(ocf_retries, 1);
 	}
@@ -238,7 +237,6 @@
 	state = crp->crp_opaque;
 	if (crp->crp_etype == EAGAIN) {
 		crp->crp_etype = 0;
-		crp->crp_flags &= ~CRYPTO_F_DONE;
 		counter_u64_add(ocf_retries, 1);
 		error = crypto_dispatch(crp);
 		if (error != 0) {