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| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-09-08 16:50:38 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-09 13:52:59 +0200 |
| commit | 8e67cdbc2f7b57bc1448c505ce5c20e60238728b (patch) | |
| tree | df128c8ebe563e049eb5006ca0b50a91f6e8907d /drivers/hwtracing | |
| parent | 3ba1eb17b633b419737b65429fa7124ce87c5efc (diff) | |
| download | linux-8e67cdbc2f7b57bc1448c505ce5c20e60238728b.tar.gz linux-8e67cdbc2f7b57bc1448c505ce5c20e60238728b.tar.bz2 linux-8e67cdbc2f7b57bc1448c505ce5c20e60238728b.zip | |
coresight: perf: deal with error condition properly
Function coresight_build_path() should return -ENOMEM when kzalloc
fails to allocated the requested memory. That way callers can deal
with the error condition in a similar way.
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/coresight-etm-perf.c | 4 | ||||
| -rw-r--r-- | drivers/hwtracing/coresight/coresight.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 98eb207684fa..2cd7c718198a 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -135,7 +135,7 @@ static void free_event_data(struct work_struct *work) } for_each_cpu(cpu, mask) { - if (event_data->path[cpu]) + if (!(IS_ERR_OR_NULL(event_data->path[cpu]))) coresight_release_path(event_data->path[cpu]); } @@ -220,7 +220,7 @@ static void *etm_setup_aux(int event_cpu, void **pages, * referenced later when the path is actually needed. */ event_data->path[cpu] = coresight_build_path(csdev); - if (!event_data->path[cpu]) + if (IS_ERR(event_data->path[cpu])) goto err; } diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index fcbedd3905e3..7bf00a0beb6f 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -429,7 +429,7 @@ struct list_head *coresight_build_path(struct coresight_device *csdev) path = kzalloc(sizeof(struct list_head), GFP_KERNEL); if (!path) - return NULL; + return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(path); |