[PATCH 2/2] kernel: Add optional patch_xenomai task

[Marek Vasut <marex@denx.de>]

Add additional task, do_patch_xenomai, inserted between do_patch and
do_configure tasks. This task applies the cobalt patch to the kernel
sources for a specific machine. This is disabled by default, so use
PACKAGECONFIG[xenomai] of the kernel package to enable the patching.

You will also need a kernel recipe for a kernel version with ipipe
patch applied.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/classes/kernel.bbclass | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index f7b612f84f..70fc39086c 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -481,6 +481,22 @@ do_shared_workdir () {
 	fi
 }
 
+PACKAGECONFIG[xenomai] = ",,"
+
+do_patch_xenomai[depends] += "${@bb.utils.contains('PACKAGECONFIG', 'xenomai', 'xenomai:do_patch', '', d)}"
+do_patch_xenomai() {
+	set +e
+	cd ${S}
+
+	if [ "${@bb.utils.contains('PACKAGECONFIG', 'xenomai', 'yes', 'no', d)}" = "yes" ]; then
+		${TMPDIR}/work-shared/${MACHINE}/xenomai-source/scripts/prepare-kernel.sh \
+			--arch=${TARGET_ARCH} \
+			--linux=${STAGING_KERNEL_DIR} ;
+	fi
+}
+
+addtask patch_xenomai before do_configure after do_patch
+
 # We don't need to stage anything, not the modules/firmware since those would clash with linux-firmware
 sysroot_stage_all () {
 	:
-- 
2.11.0