From 5d8b1f9dea17b4bf5e5f088f39eeab32c7e487be Mon Sep 17 00:00:00 2001

From: Nathan Lynch <nathanl@linux.ibm.com>

Date: Thu, 27 Jun 2019 00:30:44 -0500

Subject: [PATCH] powerpc/pseries/mobility: Add pr_debug() for device tree

 changes

References: bsc#1181674 ltc#189159

Patch-mainline: v5.9-rc1

Git-commit: 5d8b1f9dea17b4bf5e5f088f39eeab32c7e487be

When investigating issues with partition migration or resource

reassignments it is helpful to have a log of which nodes and

properties in the device tree have changed. Use pr_debug() so it's

easy to enable these at runtime with the dynamic debug facility.

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

Link: https://lore.kernel.org/r/20190627053044.9238-3-nathanl@linux.ibm.com

Acked-by: Michal Suchanek <msuchanek@suse.de>

---

 arch/powerpc/platforms/pseries/mobility.c | 5 +++++

 1 file changed, 5 insertions(+)

diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c

index 0ede49a35121..d6f4162478a5 100644

--- a/arch/powerpc/platforms/pseries/mobility.c

+++ b/arch/powerpc/platforms/pseries/mobility.c

@@ -67,6 +67,8 @@ static int delete_dt_node(__be32 phandle)

 	if (!dn)

 		return -ENOENT;

+	pr_debug("removing node %pOFfp\n", dn);

+

 	dlpar_detach_node(dn);

 	of_node_put(dn);

 	return 0;

@@ -125,6 +127,7 @@ static int update_dt_property(struct device_node *dn, struct property **prop,

 	}

 	if (!more) {

+		pr_debug("updating node %pOF property %s\n", dn, name);

 		of_update_property(dn, new_prop);

 		*prop = NULL;

 	}

@@ -243,6 +246,8 @@ static int add_dt_node(__be32 parent_phandle, __be32 drc_index)

 	if (rc)

 		dlpar_free_cc_nodes(dn);

+	pr_debug("added node %pOFfp\n", dn);

+

 	of_node_put(parent_dn);

 	return rc;

 }

-- 

2.26.2