diff options
| -rw-r--r-- | drivers/hwtracing/coresight/coresight.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 4969b329511c..7f2b478a048f 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -107,7 +107,7 @@ static int coresight_find_link_inport(struct coresight_device *csdev, dev_err(&csdev->dev, "couldn't find inport, parent: %s, child: %s\n", dev_name(&parent->dev), dev_name(&csdev->dev)); - return 0; + return -ENODEV; } static int coresight_find_link_outport(struct coresight_device *csdev, @@ -125,7 +125,7 @@ static int coresight_find_link_outport(struct coresight_device *csdev, dev_err(&csdev->dev, "couldn't find outport, parent: %s, child: %s\n", dev_name(&csdev->dev), dev_name(&child->dev)); - return 0; + return -ENODEV; } static int coresight_enable_sink(struct coresight_device *csdev, u32 mode) @@ -178,6 +178,9 @@ static int coresight_enable_link(struct coresight_device *csdev, else refport = 0; + if (refport < 0) + return refport; + if (atomic_inc_return(&csdev->refcnt[refport]) == 1) { if (link_ops(csdev)->enable) { ret = link_ops(csdev)->enable(csdev, inport, outport); |