On Mon, 03 Jun 2024 15:37:58 -0700, Stephen Boyd wrote: > We'd like to apply overlays to the root node in KUnit so we can test > platform devices created as children of the root node. > > On some architectures (powerpc), the root node isn't marked with > OF_POPULATED_BUS. If an overlay tries to modify the root node on these > platforms it will fail, while on other platforms, such as ARM, it will > succeed. This is because the root node is marked with OF_POPULATED_BUS > by of_platform_default_populate_init() calling > of_platform_default_populate() with NULL as the first argument. > > Loosen the requirement here so that platform devices can be created for > nodes created as children of the root node via DT overlays even if the > platform bus wasn't populated for the root node. > > Cc: Rob Herring <robh@xxxxxxxxxx> > Cc: Saravana Kannan <saravanak@xxxxxxxxxx> > Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx> > --- > drivers/of/platform.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
