ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/target/linux/layerscape/patches-5.4/701-net-0147-bus-fsl-mc-Allocate-mc-portal-from-root-dprc-contain.patch b/target/linux/layerscape/patches-5.4/701-net-0147-bus-fsl-mc-Allocate-mc-portal-from-root-dprc-contain.patch
new file mode 100644
index 0000000..8fd2bb2
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0147-bus-fsl-mc-Allocate-mc-portal-from-root-dprc-contain.patch
@@ -0,0 +1,45 @@
+From 703972946a42cf1f83bf50cf389d618d61b69500 Mon Sep 17 00:00:00 2001
+From: Bharat Bhushan <Bharat.Bhushan@nxp.com>
+Date: Mon, 10 Dec 2018 14:42:51 +0530
+Subject: [PATCH] bus: fsl-mc: Allocate mc-portal from root dprc container
+
+Root dprc container have allocate-able mc-portals which
+can be allocated by kernel drivers.
+
+As per current design mc-portal is allocated from parent
+dprc container if requesting device is not root-dprc.
+This works fine if the requesting device is child of
+root dprc container, because their parent is root-dprc
+container. But if request device is grandchild of root
+dprc container then it tries to allocate from it's parent
+root dprc-container and it fails.
+
+Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
+Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
+---
+ drivers/bus/fsl-mc/mc-io.c | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+--- a/drivers/bus/fsl-mc/mc-io.c
++++ b/drivers/bus/fsl-mc/mc-io.c
+@@ -174,14 +174,16 @@ int __must_check fsl_mc_portal_allocate(
+ int error = -EINVAL;
+ struct fsl_mc_resource *resource = NULL;
+ struct fsl_mc_io *mc_io = NULL;
++ struct device *root_dprc_dev;
+
+- if (mc_dev->flags & FSL_MC_IS_DPRC) {
++ if (fsl_mc_is_root_dprc(&mc_dev->dev)) {
+ mc_bus_dev = mc_dev;
+ } else {
+- if (!dev_is_fsl_mc(mc_dev->dev.parent))
+- return error;
++ fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
++ if (WARN_ON(!root_dprc_dev))
++ return -EINVAL;
+
+- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
++ mc_bus_dev = to_fsl_mc_device(root_dprc_dev);
+ }
+
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);