Add a config option to exclude DebugFS support in the CCP driver.
Signed-off-by: Gary R Hook <[email protected]>
---
drivers/crypto/ccp/Kconfig | 9 +++++++++
drivers/crypto/ccp/Makefile | 4 ++--
drivers/crypto/ccp/ccp-dev-v5.c | 4 ++++
3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/ccp/Kconfig b/drivers/crypto/ccp/Kconfig
index b9dfae47aefd..6fcedd7b0d42 100644
--- a/drivers/crypto/ccp/Kconfig
+++ b/drivers/crypto/ccp/Kconfig
@@ -44,3 +44,12 @@ config CRYPTO_DEV_SP_PSP
management commands in Secure Encrypted Virtualization (SEV) mode,
along with software-based Trusted Execution Environment (TEE) to
enable third-party trusted applications.
+
+config CRYPTO_DEV_CCP_DEBUGFS
+ bool "Enable CCP Internals in DebugFS"
+ default n
+ depends on CRYPTO_DEV_SP_CCP
+ help
+ Expose CCP device information such as operation statistics, feature
+ information, descriptor queue contents, and module parameter values set
+ at load time.
diff --git a/drivers/crypto/ccp/Makefile b/drivers/crypto/ccp/Makefile
index 51d1c0cf66c7..6b86f1e6d634 100644
--- a/drivers/crypto/ccp/Makefile
+++ b/drivers/crypto/ccp/Makefile
@@ -5,8 +5,8 @@ ccp-$(CONFIG_CRYPTO_DEV_SP_CCP) += ccp-dev.o \
ccp-ops.o \
ccp-dev-v3.o \
ccp-dev-v5.o \
- ccp-dmaengine.o \
- ccp-debugfs.o
+ ccp-dmaengine.o
+ccp-$(CONFIG_CRYPTO_DEV_CCP_DEBUGFS) += ccp-debugfs.o
ccp-$(CONFIG_PCI) += sp-pci.o
ccp-$(CONFIG_CRYPTO_DEV_SP_PSP) += psp-dev.o
diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index c9bfd4f439ce..a5bd11831b80 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -973,8 +973,10 @@ static int ccp5_init(struct ccp_device *ccp)
if (ret)
goto e_hwrng;
+#ifdef CONFIG_CRYPTO_DEV_CCP_DEBUGFS
/* Set up debugfs entries */
ccp5_debugfs_setup(ccp);
+#endif
return 0;
@@ -1012,11 +1014,13 @@ static void ccp5_destroy(struct ccp_device *ccp)
/* Remove this device from the list of available units first */
ccp_del_device(ccp);
+#ifdef CONFIG_CRYPTO_DEV_CCP_DEBUGFS
/* We're in the process of tearing down the entire driver;
* when all the devices are gone clean up debugfs
*/
if (ccp_present())
ccp5_debugfs_destroy();
+#endif
/* Disable and clear interrupts */
ccp5_disable_queue_interrupts(ccp);