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

Pull crypto updates from Herbert Xu:
 "API:
   - Add the ability to abort a skcipher walk.

  Algorithms:
   - Fix XTS to actually do the stealing.
   - Add library helpers for AES and DES for single-block users.
   - Add library helpers for SHA256.
   - Add new DES key verification helper.
   - Add surrounding bits for ESSIV generator.
   - Add accelerations for aegis128.
   - Add test vectors for lzo-rle.

  Drivers:
   - Add i.MX8MQ support to caam.
   - Add gcm/ccm/cfb/ofb aes support in inside-secure.
   - Add ofb/cfb aes support in media-tek.
   - Add HiSilicon ZIP accelerator support.

  Others:
   - Fix potential race condition in padata.
   - Use unbound workqueues in padata"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (311 commits)
  crypto: caam - Cast to long first before pointer conversion
  crypto: ccree - enable CTS support in AES-XTS
  crypto: inside-secure - Probe transform record cache RAM sizes
  crypto: inside-secure - Base RD fetchcount on actual RD FIFO size
  crypto: inside-secure - Base CD fetchcount on actual CD FIFO size
  crypto: inside-secure - Enable extended algorithms on newer HW
  crypto: inside-secure: Corrected configuration of EIP96_TOKEN_CTRL
  crypto: inside-secure - Add EIP97/EIP197 and endianness detection
  padata: remove cpu_index from the parallel_queue
  padata: unbind parallel jobs from specific CPUs
  padata: use separate workqueues for parallel and serial work
  padata, pcrypt: take CPU hotplug lock internally in padata_alloc_possible
  crypto: pcrypt - remove padata cpumask notifier
  padata: make padata_do_parallel find alternate callback CPU
  workqueue: require CPU hotplug read exclusion for apply_workqueue_attrs
  workqueue: unconfine alloc/apply/free_workqueue_attrs()
  padata: allocate workqueue internally
  arm64: dts: imx8mq: Add CAAM node
  random: Use wait_event_freezable() in add_hwgenerator_randomness()
  crypto: ux500 - Fix COMPILE_TEST warnings
  ...

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/crypto/ccp/ccp-dmaengine.c b/drivers/crypto/ccp/ccp-dmaengine.c
index 7f22a45bbc11..a54f9367a580 100644
--- a/drivers/crypto/ccp/ccp-dmaengine.c
+++ b/drivers/crypto/ccp/ccp-dmaengine.c
@@ -2,13 +2,14 @@
 /*
  * AMD Cryptographic Coprocessor (CCP) driver
  *
- * Copyright (C) 2016,2017 Advanced Micro Devices, Inc.
+ * Copyright (C) 2016,2019 Advanced Micro Devices, Inc.
  *
  * Author: Gary R Hook <gary.hook@amd.com>
  */
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
@@ -35,6 +36,10 @@ static unsigned int dma_chan_attr = CCP_DMA_DFLT;
 module_param(dma_chan_attr, uint, 0444);
 MODULE_PARM_DESC(dma_chan_attr, "Set DMA channel visibility: 0 (default) = device defaults, 1 = make private, 2 = make public");
 
+static unsigned int dmaengine = 1;
+module_param(dmaengine, uint, 0444);
+MODULE_PARM_DESC(dmaengine, "Register services with the DMA subsystem (any non-zero value, default: 1)");
+
 static unsigned int ccp_get_dma_chan_attr(struct ccp_device *ccp)
 {
 	switch (dma_chan_attr) {
@@ -637,6 +642,9 @@ int ccp_dmaengine_register(struct ccp_device *ccp)
 	unsigned int i;
 	int ret;
 
+	if (!dmaengine)
+		return 0;
+
 	ccp->ccp_dma_chan = devm_kcalloc(ccp->dev, ccp->cmd_q_count,
 					 sizeof(*(ccp->ccp_dma_chan)),
 					 GFP_KERNEL);
@@ -740,6 +748,9 @@ void ccp_dmaengine_unregister(struct ccp_device *ccp)
 {
 	struct dma_device *dma_dev = &ccp->dma_dev;
 
+	if (!dmaengine)
+		return;
+
 	dma_async_device_unregister(dma_dev);
 
 	kmem_cache_destroy(ccp->dma_desc_cache);