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-rw-r--r--drivers/coresight/of_coresight.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/coresight/of_coresight.c b/drivers/coresight/of_coresight.c
index 9a5ff56f34d9..c3efa418a86d 100644
--- a/drivers/coresight/of_coresight.c
+++ b/drivers/coresight/of_coresight.c
@@ -117,7 +117,7 @@ struct coresight_platform_data *of_get_coresight_platform_data(
struct coresight_platform_data *pdata;
struct of_endpoint endpoint, rendpoint;
struct device *rdev;
- struct device_node *cpu;
+ struct device_node *dn;
struct device_node *ep = NULL;
struct device_node *rparent = NULL;
struct device_node *rport = NULL;
@@ -186,14 +186,16 @@ struct coresight_platform_data *of_get_coresight_platform_data(
/* Affinity defaults to CPU0 */
pdata->cpu = 0;
- cpu = of_parse_phandle(node, "cpu", 0);
- if (cpu) {
- const u32 *mpidr;
+ dn = of_parse_phandle(node, "cpu", 0);
+ if (dn) {
+ const u32 *cell;
int len, index;
+ u64 hwid;
- mpidr = of_get_property(cpu, "reg", &len);
- if (mpidr && len == 4) {
- index = get_logical_index(be32_to_cpup(mpidr));
+ cell = of_get_property(dn, "reg", &len);
+ if (cell) {
+ hwid = of_read_number(cell, of_n_addr_cells(dn));
+ index = get_logical_index(hwid);
if (index != -EINVAL)
pdata->cpu = index;
}