[PATCH v2] wic/plugins/bootimg-efi-isar: gate root= with creator.rootdev not None

["'Gourav Singh' via isar-users" <isar-users@googlegroups.com>]

From: Cedric Hombourger <cedric.hombourger@siemens.com>

Checks for creator.rootdev not being None were missing and would cause
the kernel command line to read "root=None". When using the Discoverable
Partitions Specification, we really want no root= parameter on the
kernel command line (and root=None is anyhow not a valid option).

Signed-off-by: Cedric Hombourger <cedric.hombourger@siemens.com>
Signed-off-by: Gourav Singh <gouravsingh@siemens.com>
---
 meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py b/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
index 6bc78d42..6c6698d6 100644
--- a/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
+++ b/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
@@ -104,7 +104,7 @@ class BootimgEFIPlugin(SourcePlugin):
                         (get_bitbake_var("KERNEL_IMAGETYPE"), get_bitbake_var("INITRAMFS_LINK_NAME"))

             label = source_params.get('label')
-            label_conf = "root=%s" % creator.rootdev
+            label_conf = f" root={creator.rootdev}" if creator.rootdev else ""
             if label:
                 label_conf = "LABEL=%s" % label

@@ -201,7 +201,8 @@ class BootimgEFIPlugin(SourcePlugin):
             boot_conf += "linux /%s\n" % kernel

             label = source_params.get('label')
-            label_conf = "LABEL=Boot root=%s" % creator.rootdev
+            label_conf = "LABEL=Boot"
+            label_conf += f" root={creator.rootdev}" if creator.rootdev else ""
             if label:
                 label_conf = "LABEL=%s" % label

@@ -366,7 +367,7 @@ class BootimgEFIPlugin(SourcePlugin):

             with tempfile.TemporaryDirectory() as tmp_dir:
                 label = source_params.get('label')
-                label_conf = "root=%s" % creator.rootdev
+                label_conf = f" root={creator.rootdev}" if creator.rootdev else ""
                 if label:
                     label_conf = "LABEL=%s" % label

--
2.39.5

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