linux-kernel - [PATCH v2 5/5] arm64/numa: avoid inconsistent information to be printed

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Date:	Sat, 28 May 2016 17:22:57 +0800
From:	Zhen Lei <thunder.leizhen@...wei.com>
To:	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	Ganapatrao Kulkarni <gkulkarni@...iumnetworks.com>,
	Robert Richter <rrichter@...ium.com>,
	"David Daney" <david.daney@...ium.com>,
	Rob Herring <robh+dt@...nel.org>,
	"Frank Rowand" <frowand.list@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	devicetree <devicetree@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
CC:	Zefan Li <lizefan@...wei.com>, Xinwei Hu <huxinwei@...wei.com>,
	"Tianhong Ding" <dingtianhong@...wei.com>,
	Hanjun Guo <guohanjun@...wei.com>,
	Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH v2 5/5] arm64/numa: avoid inconsistent information to be printed

numa_init(of_numa_init) may returned error because of numa configuration
error. So "No NUMA configuration found" is inaccurate. In fact, specific
configuration error information should be immediately printed by the
testing branch.

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 arch/arm64/mm/numa.c | 6 +++---
 drivers/of/of_numa.c | 7 +++----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index 2601660..1b9622c 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c
@@ -338,8 +338,10 @@ static int __init numa_init(int (*init_func)(void))
 	if (ret < 0)
 		return ret;

-	if (nodes_empty(numa_nodes_parsed))
+	if (nodes_empty(numa_nodes_parsed)) {
+		pr_info("No NUMA configuration found\n");
 		return -EINVAL;
+	}

 	ret = numa_register_nodes();
 	if (ret < 0)
@@ -370,8 +372,6 @@ static int __init dummy_numa_init(void)

 	if (numa_off)
 		pr_info("NUMA disabled\n"); /* Forced off on command line. */
-	else
-		pr_info("No NUMA configuration found\n");
 	pr_info("NUMA: Faking a node at [mem %#018Lx-%#018Lx]\n",
 	       0LLU, PFN_PHYS(max_pfn) - 1);

diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
index fb62307..3157130 100644
--- a/drivers/of/of_numa.c
+++ b/drivers/of/of_numa.c
@@ -63,7 +63,7 @@ static int __init of_numa_parse_memory_nodes(void)
 	struct device_node *np = NULL;
 	struct resource rsrc;
 	u32 nid;
-	int i, r = 0;
+	int i, r;

 	for_each_node_by_type(np, "memory") {
 		r = of_property_read_u32(np, "numa-node-id", &nid);
@@ -81,12 +81,11 @@ static int __init of_numa_parse_memory_nodes(void)
 		if (!i || r) {
 			of_node_put(np);
 			pr_err("NUMA: bad property in memory node\n");
-			r = r ? : -EINVAL;
-			break;
+			return r ? : -EINVAL;
 		}
 	}

-	return r;
+	return 0;
 }

 static int __init of_numa_parse_distance_map_v1(struct device_node *map)
--
2.5.0