[OE-core][dunfell v2 02/14] kernel-yocto.bbclass: Fix deps when externalsrc is used

["Steve Sakoman" <steve@sakoman.com>]

From: Paul Barker <pbarker@konsulko.com>

do_kernel_configme was recently removed from SRCTREECOVEREDTASKS so this
task still runs when externalsrc is used. This task normally runs after
do_patch but when externalsrc is used, do_patch is removed and this ordering
restriction does nothing. This allows bitbake to execute do_kernel_configme
too early, causing races with do_unpack.

This is fixed by adding in a dependency on do_unpack when externalsrc is
used.

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
 meta/classes/kernel-yocto.bbclass | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass
index 6792c9a233..5bc627066e 100644
--- a/meta/classes/kernel-yocto.bbclass
+++ b/meta/classes/kernel-yocto.bbclass
@@ -489,6 +489,12 @@ python () {
     # If diffconfig is available, ensure it runs after kernel_configme
     if 'do_diffconfig' in d:
         bb.build.addtask('do_diffconfig', None, 'do_kernel_configme', d)
+
+    externalsrc = d.getVar('EXTERNALSRC')
+    if externalsrc:
+        # If we deltask do_patch, do_kernel_configme is left without
+        # dependencies and runs too early
+        d.setVarFlag('do_kernel_configme', 'deps', (d.getVarFlag('do_kernel_configme', 'deps', False) or []) + ['do_unpack'])
 }
 
 # extra tasks
-- 
2.17.1