Handle failures in fixing up connections for a newly registered device. This will be useful to handle cases where we fail to expose the links via sysfs for the connections.
Cc: Mathieu Poirier <[email protected]> Signed-off-by: Suzuki K Poulose <[email protected]> --- drivers/hwtracing/coresight/coresight.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 010bc86..4d63063 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -1025,18 +1025,18 @@ static int coresight_orphan_match(struct device *dev, void *data) return 0; } -static void coresight_fixup_orphan_conns(struct coresight_device *csdev) +static int coresight_fixup_orphan_conns(struct coresight_device *csdev) { /* * No need to check for a return value as orphan connection(s) * are hooked-up with each newly added component. */ - bus_for_each_dev(&coresight_bustype, NULL, + return bus_for_each_dev(&coresight_bustype, NULL, csdev, coresight_orphan_match); } -static void coresight_fixup_device_conns(struct coresight_device *csdev) +static int coresight_fixup_device_conns(struct coresight_device *csdev) { int i; @@ -1056,6 +1056,8 @@ static void coresight_fixup_device_conns(struct coresight_device *csdev) conn->child_dev = NULL; } } + + return 0; } static int coresight_remove_match(struct device *dev, void *data) @@ -1265,10 +1267,15 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) mutex_lock(&coresight_mutex); - coresight_fixup_device_conns(csdev); - coresight_fixup_orphan_conns(csdev); + ret = coresight_fixup_device_conns(csdev); + if (!ret) + ret = coresight_fixup_orphan_conns(csdev); mutex_unlock(&coresight_mutex); + if (ret) { + coresight_unregister(csdev); + return ERR_PTR(ret); + } return csdev; -- 2.7.4
