of: return NUMA_NO_NODE from fallback of_node_to_nid() (c8fff7bc) · Commits · 戴 / test

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@yandex-team.ru> Fixes: ("of: implement of_node_to_nid as a weak function") Signed-off-by:

drivers/of/base.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -89,7 +89,7 @@ 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

+4 −1

Original line number	Diff line number	Diff line
		@@ -667,7 +667,10 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag
		#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(