kernel.bbclass: include signing keys when copying files required for module builds

The absence of signing_key.* in $kerneldir made signing of
out-of-tree kernel modules fail (silently). Add copying of these
files during the shared_workdir task.

(From OE-Core rev: 7aadc91b5ef86a89a827d59bd19e7b8272a5dd66)

Signed-off-by: Mattias Waldo <mattias.waldo@saabgroup.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 023e308869..d6a0ca8504 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -360,6 +360,14 @@ do_shared_workdir () {
         cp .config $kerneldir/
         mkdir -p $kerneldir/include/config
         cp include/config/kernel.release $kerneldir/include/config/kernel.release
+        if [ -e certs/signing_key.pem ]; then
+                # The signing_key.* files are stored in the certs/ dir in
+                # newer Linux kernels
+                mkdir -p $kerneldir/certs
+                cp certs/signing_key.* $kerneldir/certs/
+        elif [ -e signing_key.priv ]; then
+                cp signing_key.* $kerneldir/
+        fi
 
         # We can also copy over all the generated files and avoid special cases
         # like version.h, but we've opted to keep this small until file creep starts