From: Mike Christie <michaelc@xxxxxxxxxxx>
class_find_device gets a ref to the device so we must release it.
The class will serialize access to the ep so we do not have to worry
about a remove racing with the callers access, so we can simplify the
use and drop the ref right away.
Signed-off-by: Mike Christie <michaelc@xxxxxxxxxxx>
---
drivers/scsi/scsi_transport_iscsi.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 8e34f3c..3af7cbc 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -219,6 +219,7 @@ EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint);
struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle)
{
+ struct iscsi_endpoint *ep;
struct device *dev;
dev = class_find_device(&iscsi_endpoint_class, &handle,
@@ -226,7 +227,13 @@ struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle)
if (!dev)
return NULL;
- return iscsi_dev_to_endpoint(dev);
+ ep = iscsi_dev_to_endpoint(dev);
+ /*
+ * we can drop this now because the interface will prevent
+ * removals and lookups from racing.
+ */
+ put_device(dev);
+ return ep;
}
EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint);
--
1.5.4.1
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