3.16.7-ckt15 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
commit c8fff7bc5bba6bd59cad40441c189c4efe7190f6 upstream.
Node 0 might be offline as well as any other numa node,
in this case kernel cannot handle memory allocation and crashes.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
Fixes: 0c3f061c195c ("of: implement of_node_to_nid as a weak function")
Signed-off-by: Grant Likely <grant.likely@xxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
drivers/of/base.c | 2 +-
include/linux/of.h | 5 ++++-
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 296bc43d26cc..9985665f7397 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -85,7 +85,7 @@ EXPORT_SYMBOL(of_n_size_cells);
#ifdef CONFIG_NUMA
int __weak of_node_to_nid(struct device_node *np)
{
- return numa_node_id();
+ return NUMA_NO_NODE;
}
#endif
diff --git a/include/linux/of.h b/include/linux/of.h
index db2f8ac18dad..55452d38ae06 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -580,7 +580,10 @@ static inline const char *of_prop_next_string(struct property *prop,
#if defined(CONFIG_OF) && defined(CONFIG_NUMA)
extern int of_node_to_nid(struct device_node *np);
#else
-static inline int of_node_to_nid(struct device_node *device) { return 0; }
+static inline int of_node_to_nid(struct device_node *device)
+{
+ return NUMA_NO_NODE;
+}
#endif
static inline struct device_node *of_find_matching_node(
--
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