[Xen-devel] [RFC PATCH 5/7] cpufreq: cpufreq-cpu0: change cpus data path in devtree for Dom0 kernel

[Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx>]

Xen hypervisor creates standard cpus nodes for virtual cpus.
All information needed for this driver about physical cpus
now located in /cpus/cpu@0/private_data node instead of the
/cpus node.

Signed-off-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx>
---
 drivers/cpufreq/cpufreq-cpu0.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c
index ef4fbc4..3c4474a 100644
--- a/drivers/cpufreq/cpufreq-cpu0.c
+++ b/drivers/cpufreq/cpufreq-cpu0.c
@@ -182,7 +182,11 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
        struct device_node *np;
        int ret;
 
+#ifdef CONFIG_XEN_DOM0
+       np = of_find_node_by_path("/cpus/cpu@0/private_data/cpu@0");
+#else
        np = of_find_node_by_path("/cpus/cpu@0");
+#endif
        if (!np) {
                pr_err("failed to find cpu0 node\n");
                return -ENOENT;
-- 
1.9.1


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