From: Randy Dunlap <rdun...@xenotime.net>

Fix build errors by adding kconfig dependency on KEYS:

lib/digsig.c:106:16: error: dereferencing pointer to incomplete type
lib/digsig.c:107:11: error: dereferencing pointer to incomplete type
lib/digsig.c:184:14: error: dereferencing pointer to incomplete type
lib/digsig.c:223:3: error: 'key_ref_t' undeclared (first use in this function)
lib/digsig.c:223:13: error: expected ';' before 'kref'
lib/digsig.c:224:3: error: 'kref' undeclared (first use in this function)
lib/digsig.c:224:3: error: implicit declaration of function 'keyring_search'
lib/digsig.c:231:3: error: implicit declaration of function 'request_key'

and after changing lib/Kconfig:
warning: (INTEGRITY_DIGSIG) selects DIGSIG which has unmet direct dependencies 
(CRYPTO && KEYS)

Signed-off-by: Randy Dunlap <rdun...@xenotime.net>
Cc: Dmitry Kasatkin <dmitry.kasat...@intel.com>
---
 lib/Kconfig                |    4 ++--
 security/integrity/Kconfig |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

--- next-2011-1121.orig/lib/Kconfig
+++ next-2011-1121/lib/Kconfig
@@ -294,10 +294,10 @@ config MPILIB_EXTRA
 
 config DIGSIG
        tristate "In-kernel signature checker"
-       depends on CRYPTO
+       depends on CRYPTO && KEYS
        select MPILIB
        help
          Digital signature verification. Currently only RSA is supported.
-         Implementation is done using GnuPG MPI library
+         Implementation is done using GnuPG MPI library.
 
 endmenu
--- next-2011-1121.orig/security/integrity/Kconfig
+++ next-2011-1121/security/integrity/Kconfig
@@ -5,7 +5,7 @@ config INTEGRITY
 
 config INTEGRITY_DIGSIG
        boolean "Digital signature verification using multiple keyrings"
-       depends on INTEGRITY
+       depends on INTEGRITY && CRYPTO && KEYS
        default n
        select DIGSIG
        help
--
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