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coresight: making cpu index lookup arm64 compliant 

Function "get_logical_index()" is not available on arm64.
Instead of adding the function simply using "of_get_cpu_node()" and
comparing the return value with cpu handles yields the same
result.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathieu Poirier 2015-03-30 14:13:34 -06:00 committed by Greg Kroah-Hartman
parent d86fb45b5c
commit 8c02a5ba34
1 changed files with 6 additions and 12 deletions
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18
drivers/coresight/of_coresight.c
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@ -22,6 +22,7 @@
#include <linux/platform_device.h>
#include <linux/amba/bus.h>
#include <linux/coresight.h>
#include <linux/cpumask.h>
#include <asm/smp_plat.h>
@ -113,7 +114,7 @@ static int of_coresight_alloc_memory(struct device *dev,
struct coresight_platform_data *of_get_coresight_platform_data(
struct device *dev, struct device_node *node)
{
int i = 0, ret = 0;
int i = 0, ret = 0, cpu;
struct coresight_platform_data *pdata;
struct of_endpoint endpoint, rendpoint;
struct device *rdev;
@ -187,17 +188,10 @@ struct coresight_platform_data *of_get_coresight_platform_data(
/* Affinity defaults to CPU0 */
pdata->cpu = 0;
dn = of_parse_phandle(node, "cpu", 0);
if (dn) {
const u32 *cell;
int len, index;
u64 hwid;
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;
for (cpu = 0; dn && cpu < nr_cpu_ids; cpu++) {
if (dn == of_get_cpu_node(cpu, NULL)) {
pdata->cpu = cpu;
break;
}
}