@@ -20,6 +20,7 @@ static int noinline_for_stack sun4i_ss_o
 	unsigned int ivsize = crypto_skcipher_ivsize(tfm);
 	struct sun4i_cipher_req_ctx *ctx = skcipher_request_ctx(areq);
 	u32 mode = ctx->mode;
+	void *backup_iv = NULL;
 	/* when activating SS, the default FIFO space is SS_RX_DEFAULT(32) */
 	u32 rx_cnt = SS_RX_DEFAULT;
 	u32 tx_cnt = 0;

@@ -44,6 +45,13 @@ static int noinline_for_stack sun4i_ss_o
 		return -EINVAL;
 	}
 
+	if (areq->iv && ivsize > 0 && mode & SS_DECRYPTION) {
+		backup_iv = kzalloc(ivsize, GFP_KERNEL);
+		if (!backup_iv)
+			return -ENOMEM;
+		scatterwalk_map_and_copy(backup_iv, areq->src, areq->cryptlen - ivsize, ivsize, 0);
+	}
+
 	spin_lock_irqsave(&ss->slock, flags);
 
 	for (i = 0; i < op->keylen; i += 4)

@@ -117,9 +125,12 @@ static int noinline_for_stack sun4i_ss_o
 	} while (oleft);
 
 	if (areq->iv) {
-		for (i = 0; i < 4 && i < ivsize / 4; i++) {
-			v = readl(ss->base + SS_IV0 + i * 4);
-			*(u32 *)(areq->iv + i * 4) = v;
+		if (mode & SS_DECRYPTION) {
+			memcpy(areq->iv, backup_iv, ivsize);
+			kfree_sensitive(backup_iv);
+		} else {
+			scatterwalk_map_and_copy(areq->iv, areq->dst, areq->cryptlen - ivsize,
+						 ivsize, 0);
 		}
 	}
 

@@ -174,6 +185,7 @@ static int sun4i_ss_cipher_poll(struct s
 	unsigned int ileft = areq->cryptlen;
 	unsigned int oleft = areq->cryptlen;
 	unsigned int todo;
+	void *backup_iv = NULL;
 	struct sg_mapping_iter mi, mo;
 	unsigned long pi = 0, po = 0; /* progress for in and out */
 	bool miter_err;

@@ -217,6 +229,13 @@ static int sun4i_ss_cipher_poll(struct s
 	if (need_fallback)
 		return sun4i_ss_cipher_poll_fallback(areq);
 
+	if (areq->iv && ivsize > 0 && mode & SS_DECRYPTION) {
+		backup_iv = kzalloc(ivsize, GFP_KERNEL);
+		if (!backup_iv)
+			return -ENOMEM;
+		scatterwalk_map_and_copy(backup_iv, areq->src, areq->cryptlen - ivsize, ivsize, 0);
+	}
+
 	spin_lock_irqsave(&ss->slock, flags);
 
 	for (i = 0; i < op->keylen; i += 4)

@@ -345,9 +364,12 @@ static int sun4i_ss_cipher_poll(struct s
 		sg_miter_stop(&mo);
 	}
 	if (areq->iv) {
-		for (i = 0; i < 4 && i < ivsize / 4; i++) {
-			v = readl(ss->base + SS_IV0 + i * 4);
-			*(u32 *)(areq->iv + i * 4) = v;
+		if (mode & SS_DECRYPTION) {
+			memcpy(areq->iv, backup_iv, ivsize);
+			kfree_sensitive(backup_iv);
+		} else {
+			scatterwalk_map_and_copy(areq->iv, areq->dst, areq->cryptlen - ivsize,
+						 ivsize, 0);
 		}
 	}