kernel-yocto: allow kernel-meta repositories to be patched

For testing purposes, it is often easier to patch a fragment
in a kernel-meta repository versus needing to make a copy or
modify the source repository.

We can allow this sort of patching when a patchdir of kernel-meta
is passed (to indicate the nested kernel-meta repository).

Also note that we must patch the meta data before they are
processed/gathered, since migrated copies to the kernel source
directory will be used later.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass
index 2f556ca03b206ad7fb57ff4dd29d4a1daca9e383..bd7a9575831983a855009dd1154c1ae1da03495c 100644 (file)
--- a/meta/classes/kernel-yocto.bbclass
+++ b/meta/classes/kernel-yocto.bbclass
@@ -5,12 +5,21 @@ PATCH_GIT_USER_NAME ?= "OpenEmbedded"
 
 # returns local (absolute) path names for all valid patches in the
 # src_uri
-def find_patches(d):
+def find_patches(d,subdir):
     patches = src_patches(d)
     patch_list=[]
     for p in patches:
-        _, _, local, _, _, _ = bb.fetch.decodeurl(p)
-        patch_list.append(local)
+        _, _, local, _, _, parm = bb.fetch.decodeurl(p)
+        # if patchdir has been passed, we won't be able to apply it so skip
+        # the patch for now, and special processing happens later
+        patchdir = ''
+        if "patchdir" in parm:
+            patchdir = parm["patchdir"]
+        if patchdir:
+            if subdir == patchdir:
+                patch_list.append(local)
+        else:
+            patch_list.append(local)
 
     return patch_list
 
@@ -119,8 +128,20 @@ do_kernel_metadata() {
                fi
        fi
 
+       # was anyone trying to patch the kernel meta data ?, we need to do
+       # this here, since the scc commands migrate the .cfg fragments to the
+       # kernel source tree, where they'll be used later.
+       check_git_config
+       patches="${@" ".join(find_patches(d,'kernel-meta'))}"
+       for p in $patches; do
+           (
+               cd ${WORKDIR}/kernel-meta
+               git am -s $p
+           )
+       done
+
        sccs_from_src_uri="${@" ".join(find_sccs(d))}"
-       patches="${@" ".join(find_patches(d))}"
+       patches="${@" ".join(find_patches(d,''))}"
        feat_dirs="${@" ".join(find_kernel_feature_dirs(d))}"
 
        # a quick check to make sure we don't have duplicate defconfigs