Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.15:

  API:

   - Disambiguate EBUSY when queueing crypto request by adding ENOSPC.
     This change touches code outside the crypto API.
   - Reset settings when empty string is written to rng_current.

  Algorithms:

   - Add OSCCA SM3 secure hash.

  Drivers:

   - Remove old mv_cesa driver (replaced by marvell/cesa).
   - Enable rfc3686/ecb/cfb/ofb AES in crypto4xx.
   - Add ccm/gcm AES in crypto4xx.
   - Add support for BCM7278 in iproc-rng200.
   - Add hash support on Exynos in s5p-sss.
   - Fix fallback-induced error in vmx.
   - Fix output IV in atmel-aes.
   - Fix empty GCM hash in mediatek.

  Others:

   - Fix DoS potential in lib/mpi.
   - Fix potential out-of-order issues with padata"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (162 commits)
  lib/mpi: call cond_resched() from mpi_powm() loop
  crypto: stm32/hash - Fix return issue on update
  crypto: dh - Remove pointless checks for NULL 'p' and 'g'
  crypto: qat - Clean up error handling in qat_dh_set_secret()
  crypto: dh - Don't permit 'key' or 'g' size longer than 'p'
  crypto: dh - Don't permit 'p' to be 0
  crypto: dh - Fix double free of ctx->p
  hwrng: iproc-rng200 - Add support for BCM7278
  dt-bindings: rng: Document BCM7278 RNG200 compatible
  crypto: chcr - Replace _manual_ swap with swap macro
  crypto: marvell - Add a NULL entry at the end of mv_cesa_plat_id_table[]
  hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resume
  crypto: atmel - remove empty functions
  crypto: ecdh - remove empty exit()
  MAINTAINERS: update maintainer for qat
  crypto: caam - remove unused param of ctx_map_to_sec4_sg()
  crypto: caam - remove unneeded edesc zeroization
  crypto: atmel-aes - Reset the controller before each use
  crypto: atmel-aes - properly set IV after {en,de}crypt
  hwrng: core - Reset user selected rng by writing "" to rng_current
  ...

5 files changed, 15 insertions, 17 deletions

diff --git a/drivers/crypto/ccp/ccp-crypto-aes-galois.c b/drivers/crypto/ccp/ccp-crypto-aes-galois.c
index 5231352..ff02b71 100644
--- a/drivers/crypto/ccp/ccp-crypto-aes-galois.c
+++ b/drivers/crypto/ccp/ccp-crypto-aes-galois.c
@@ -19,13 +19,12 @@
 #include <crypto/algapi.h>
 #include <crypto/aes.h>
 #include <crypto/ctr.h>
+#include <crypto/gcm.h>
 #include <crypto/scatterwalk.h>
 #include <linux/delay.h>
 
 #include "ccp-crypto.h"
 
-#define	AES_GCM_IVSIZE	12
-
 static int ccp_aes_gcm_complete(struct crypto_async_request *async_req, int ret)
 {
 	return ret;
@@ -95,9 +94,9 @@ static int ccp_aes_gcm_crypt(struct aead_request *req, bool encrypt)
 	 */
 
 	/* Prepare the IV: 12 bytes + an integer (counter) */
-	memcpy(rctx->iv, req->iv, AES_GCM_IVSIZE);
+	memcpy(rctx->iv, req->iv, GCM_AES_IV_SIZE);
 	for (i = 0; i < 3; i++)
-		rctx->iv[i + AES_GCM_IVSIZE] = 0;
+		rctx->iv[i + GCM_AES_IV_SIZE] = 0;
 	rctx->iv[AES_BLOCK_SIZE - 1] = 1;
 
 	/* Set up a scatterlist for the IV */
@@ -160,7 +159,7 @@ static struct aead_alg ccp_aes_gcm_defaults = {
 	.encrypt = ccp_aes_gcm_encrypt,
 	.decrypt = ccp_aes_gcm_decrypt,
 	.init = ccp_aes_gcm_cra_init,
-	.ivsize = AES_GCM_IVSIZE,
+	.ivsize = GCM_AES_IV_SIZE,
 	.maxauthsize = AES_BLOCK_SIZE,
 	.base = {
 		.cra_flags	= CRYPTO_ALG_TYPE_ABLKCIPHER |
diff --git a/drivers/crypto/ccp/ccp-crypto-main.c b/drivers/crypto/ccp/ccp-crypto-main.c
index 35a9de7..b95d199 100644
--- a/drivers/crypto/ccp/ccp-crypto-main.c
+++ b/drivers/crypto/ccp/ccp-crypto-main.c
@@ -222,9 +222,10 @@ static int ccp_crypto_enqueue_cmd(struct ccp_crypto_cmd *crypto_cmd)
 
 	/* Check if the cmd can/should be queued */
 	if (req_queue.cmd_count >= CCP_CRYPTO_MAX_QLEN) {
-		ret = -EBUSY;
-		if (!(crypto_cmd->cmd->flags & CCP_CMD_MAY_BACKLOG))
+		if (!(crypto_cmd->cmd->flags & CCP_CMD_MAY_BACKLOG)) {
+			ret = -ENOSPC;
 			goto e_lock;
+		}
 	}
 
 	/* Look for an entry with the same tfm.  If there is a cmd
@@ -243,9 +244,6 @@ static int ccp_crypto_enqueue_cmd(struct ccp_crypto_cmd *crypto_cmd)
 		ret = ccp_enqueue_cmd(crypto_cmd->cmd);
 		if (!ccp_crypto_success(ret))
 			goto e_lock;	/* Error, don't queue it */
-		if ((ret == -EBUSY) &&
-		    !(crypto_cmd->cmd->flags & CCP_CMD_MAY_BACKLOG))
-			goto e_lock;	/* Not backlogging, don't queue it */
 	}
 
 	if (req_queue.cmd_count >= CCP_CRYPTO_MAX_QLEN) {
diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index 65604fc..44a4d27 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -788,13 +788,12 @@ static int ccp5_init(struct ccp_device *ccp)
 	struct ccp_cmd_queue *cmd_q;
 	struct dma_pool *dma_pool;
 	char dma_pool_name[MAX_DMAPOOL_NAME_LEN];
-	unsigned int qmr, qim, i;
+	unsigned int qmr, i;
 	u64 status;
 	u32 status_lo, status_hi;
 	int ret;
 
 	/* Find available queues */
-	qim = 0;
 	qmr = ioread32(ccp->io_regs + Q_MASK_REG);
 	for (i = 0; i < MAX_HW_QUEUES; i++) {
 
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
index 4e029b1..1b5035d 100644
--- a/drivers/crypto/ccp/ccp-dev.c
+++ b/drivers/crypto/ccp/ccp-dev.c
@@ -292,9 +292,12 @@ int ccp_enqueue_cmd(struct ccp_cmd *cmd)
 	i = ccp->cmd_q_count;
 
 	if (ccp->cmd_count >= MAX_CMD_QLEN) {
-		ret = -EBUSY;
-		if (cmd->flags & CCP_CMD_MAY_BACKLOG)
+		if (cmd->flags & CCP_CMD_MAY_BACKLOG) {
+			ret = -EBUSY;
 			list_add_tail(&cmd->entry, &ccp->backlog);
+		} else {
+			ret = -ENOSPC;
+		}
 	} else {
 		ret = -EINPROGRESS;
 		ccp->cmd_count++;
diff --git a/drivers/crypto/ccp/ccp-dmaengine.c b/drivers/crypto/ccp/ccp-dmaengine.c
index d608043..8b9da58 100644
--- a/drivers/crypto/ccp/ccp-dmaengine.c
+++ b/drivers/crypto/ccp/ccp-dmaengine.c
@@ -223,6 +223,7 @@ static struct ccp_dma_desc *ccp_handle_active_desc(struct ccp_dma_chan *chan,
 				desc->tx_desc.cookie, desc->status);
 
 			dma_cookie_complete(tx_desc);
+			dma_descriptor_unmap(tx_desc);
 		}
 
 		desc = __ccp_next_dma_desc(chan, desc);
@@ -230,9 +231,7 @@ static struct ccp_dma_desc *ccp_handle_active_desc(struct ccp_dma_chan *chan,
 		spin_unlock_irqrestore(&chan->lock, flags);
 
 		if (tx_desc) {
-			if (tx_desc->callback &&
-			    (tx_desc->flags & DMA_PREP_INTERRUPT))
-				tx_desc->callback(tx_desc->callback_param);
+			dmaengine_desc_get_callback_invoke(tx_desc, NULL);
 
 			dma_run_dependencies(tx_desc);
 		}