to avoid further confusion, this thread should be considered closed. I have refactored my patches to have all linux-custom changes in one series
I now have a clean patch for the the ci40 but will be submitting it only after the kernel recipe rework is accepted

On Friday, October 25, 2019 at 7:40:50 PM UTC+2, Cedric Hombourger wrote:
Signed-off-by: Cedric Hombourger <Cedric_H...@mentor.com>
---
 meta-isar/recipes-kernel/linux/files/no-fs-hfs.cfg       | 2 ++
 meta-isar/recipes-kernel/linux/linux-mainline_4.19.80.bb | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 meta-isar/recipes-kernel/linux/files/no-fs-hfs.cfg

diff --git a/meta-isar/recipes-kernel/linux/files/no-fs-hfs.cfg b/meta-isar/recipes-kernel/linux/files/no-fs-hfs.cfg
new file mode 100644
index 0000000..5dbfadb
--- /dev/null
+++ b/meta-isar/recipes-kernel/linux/files/no-fs-hfs.cfg
@@ -0,0 +1,2 @@
+# CONFIG_FS_HFS is not set
+# CONFIG_HFSPLUS_FS is not set
diff --git a/meta-isar/recipes-kernel/linux/linux-mainline_4.19.80.bb b/meta-isar/recipes-kernel/linux/linux-mainline_4.19.80.bb
index b41d1a8..83038f0 100644
--- a/meta-isar/recipes-kernel/linux/linux-mainline_4.19.80.bb
+++ b/meta-isar/recipes-kernel/linux/linux-mainline_4.19.80.bb
@@ -11,7 +11,9 @@ ARCHIVE_VERSION = "${@ d.getVar('PV')[:-2] if d.getVar('PV').endswith('.0') else
 
 SRC_URI += " \
     https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-${ARCHIVE_VERSION}.tar.xz \
-    file://x86_64_defconfig"
+    file://x86_64_defconfig \
+    file://no-fs-hfs.cfg"
+
 SRC_URI[sha256sum] = "80a9ba764e088aa7fddfef5a97c0236905e291468a37832243b6f3828d36e7ec"
 
 SRC_URI_append_de0-nano-soc = " \
--
2.20.1