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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2017-06-05 22:15:14 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-09 11:45:24 +0200 |
| commit | 04c9490035691a398d851fd160ce8af08ba0af0d (patch) | |
| tree | bd22e56074f1f34707539b06d359e7f25a038ccc /drivers/hwtracing | |
| parent | MAINTAINERS: update file entries for Coresight subsystem (diff) | |
| download | linux-04c9490035691a398d851fd160ce8af08ba0af0d.tar.xz linux-04c9490035691a398d851fd160ce8af08ba0af0d.zip | |
coresight: of_get_coresight_platform_data: Add missing of_node_put
The of_get_coresight_platform_data iterates over the possible CPU nodes
to find a given cpu phandle. However it does not drop the reference
to the node pointer returned by the of_get_coresight_platform_data.
This patch also introduces another minor fix is to use
of_cpu_device_node_get() to replace of_get_cpu_node().
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
[Leo: minor tweaks for of_get_coresight_platform_data]
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/of_coresight.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c index 2749853b9010..225b2dd5970c 100644 --- a/drivers/hwtracing/coresight/of_coresight.c +++ b/drivers/hwtracing/coresight/of_coresight.c @@ -109,7 +109,8 @@ of_get_coresight_platform_data(struct device *dev, struct coresight_platform_data *pdata; struct of_endpoint endpoint, rendpoint; struct device *rdev; - struct device_node *dn; + bool found; + struct device_node *dn, *np; struct device_node *ep = NULL; struct device_node *rparent = NULL; struct device_node *rport = NULL; @@ -176,17 +177,19 @@ of_get_coresight_platform_data(struct device *dev, } while (ep); } - /* Affinity defaults to CPU0 */ - pdata->cpu = 0; dn = of_parse_phandle(node, "cpu", 0); - for (cpu = 0; dn && cpu < nr_cpu_ids; cpu++) { - if (dn == of_get_cpu_node(cpu, NULL)) { - pdata->cpu = cpu; + for_each_possible_cpu(cpu) { + np = of_cpu_device_node_get(cpu); + found = (dn == np); + of_node_put(np); + if (found) break; - } } of_node_put(dn); + /* Affinity to CPU0 if no cpu nodes are found */ + pdata->cpu = found ? cpu : 0; + return pdata; } EXPORT_SYMBOL_GPL(of_get_coresight_platform_data); |