Not all DT platforms have all the cpus collected under a /cpus node.
That just happens to be a details of FDT, ePAPR and PowerPC platforms.
Sparc does something different, but unfortunately the current code
complains with a warning if /cpus isn't there. This became a problem
with commit f86e4718, "driver/core cpu: initialize of_node in cpu's
device structure", which caused the function to get called for all
architectures.
This commit is a temporary fix to fail silently if the cpus node isn't
present. A proper fix will come later to allow arch code to provide a
custom mechanism for decoding the CPU hwid if the 'reg' property isn't
appropriate.
Signed-off-by: Grant Likely <[email protected]>
Cc: David Miller <[email protected]>
Cc: Sudeep KarkadaNagesha <[email protected]>
Cc: Rob Herring <[email protected]>
---
drivers/of/base.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 865d3f6..7d4c70f 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -303,10 +303,8 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
struct device_node *cpun, *cpus;
cpus = of_find_node_by_path("/cpus");
- if (!cpus) {
- pr_warn("Missing cpus node, bailing out\n");
+ if (!cpus)
return NULL;
- }
for_each_child_of_node(cpus, cpun) {
if (of_node_cmp(cpun->type, "cpu"))
--
1.8.1.2