2 files changed, 24 insertions, 13 deletions

diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c
index 943f2abac9b4..ce038d861eb9 100644
--- a/crypto/async_tx/async_raid6_recov.c
+++ b/crypto/async_tx/async_raid6_recov.c
@@ -324,6 +324,7 @@ struct dma_async_tx_descriptor *
 async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
                         struct page **blocks, struct async_submit_ctl *submit)
 {
+        void *scribble = submit->scribble;
         int non_zero_srcs, i;
 
         BUG_ON(faila == failb);
@@ -332,11 +333,13 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
 
         pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes);
 
-        /* we need to preserve the contents of 'blocks' for the async
-         * case, so punt to synchronous if a scribble buffer is not available
+        /* if a dma resource is not available or a scribble buffer is not
+         * available punt to the synchronous path.  In the 'dma not
+         * available' case be sure to use the scribble buffer to
+         * preserve the content of 'blocks' as the caller intended.
          */
-        if (!submit->scribble) {
-                void **ptrs = (void **) blocks;
+        if (!async_dma_find_channel(DMA_PQ) || !scribble) {
+                void **ptrs = scribble ? scribble : (void **) blocks;
 
                 async_tx_quiesce(&submit->depend_tx);
                 for (i = 0; i < disks; i++)
@@ -406,11 +409,13 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila,
 
         pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes);
 
-        /* we need to preserve the contents of 'blocks' for the async
-         * case, so punt to synchronous if a scribble buffer is not available
+        /* if a dma resource is not available or a scribble buffer is not
+         * available punt to the synchronous path.  In the 'dma not
+         * available' case be sure to use the scribble buffer to
+         * preserve the content of 'blocks' as the caller intended.
          */
-        if (!scribble) {
-                void **ptrs = (void **) blocks;
+        if (!async_dma_find_channel(DMA_PQ) || !scribble) {
+                void **ptrs = scribble ? scribble : (void **) blocks;
 
                 async_tx_quiesce(&submit->depend_tx);
                 for (i = 0; i < disks; i++)
diff --git a/crypto/authenc.c b/crypto/authenc.c
index 2bb7348d8d55..05eb32e0d949 100644
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -46,6 +46,12 @@ struct authenc_request_ctx {
         char tail[];
 };
 
+static void authenc_request_complete(struct aead_request *req, int err)
+{
+        if (err != -EINPROGRESS)
+                aead_request_complete(req, err);
+}
+
 static int crypto_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
                                  unsigned int keylen)
 {
@@ -142,7 +148,7 @@ static void authenc_geniv_ahash_update_done(struct crypto_async_request *areq,
                                  crypto_aead_authsize(authenc), 1);
 
 out:
-        aead_request_complete(req, err);
+        authenc_request_complete(req, err);
 }
 
 static void authenc_geniv_ahash_done(struct crypto_async_request *areq, int err)
@@ -208,7 +214,7 @@ static void authenc_verify_ahash_update_done(struct crypto_async_request *areq,
         err = crypto_ablkcipher_decrypt(abreq);
 
 out:
-        aead_request_complete(req, err);
+        authenc_request_complete(req, err);
 }
 
 static void authenc_verify_ahash_done(struct crypto_async_request *areq,
@@ -245,7 +251,7 @@ static void authenc_verify_ahash_done(struct crypto_async_request *areq,
         err = crypto_ablkcipher_decrypt(abreq);
 
 out:
-        aead_request_complete(req, err);
+        authenc_request_complete(req, err);
 }
 
 static u8 *crypto_authenc_ahash_fb(struct aead_request *req, unsigned int flags)
@@ -379,7 +385,7 @@ static void crypto_authenc_encrypt_done(struct crypto_async_request *req,
                 err = crypto_authenc_genicv(areq, iv, 0);
         }
 
-        aead_request_complete(areq, err);
+        authenc_request_complete(areq, err);
 }
 
 static int crypto_authenc_encrypt(struct aead_request *req)
@@ -420,7 +426,7 @@ static void crypto_authenc_givencrypt_done(struct crypto_async_request *req,
                 err = crypto_authenc_genicv(areq, greq->giv, 0);
         }
 
-        aead_request_complete(areq, err);
+        authenc_request_complete(areq, err);
 }
 
 static int crypto_authenc_givencrypt(struct aead_givcrypt_request *req)