stm class: Mark src::link __rcu

Source device's link is protected with srcu, mark it as such to have
proper build-time validation of accesses to this field. The update
side that's dereferencing it under an update lock also needs an
accessor to dereference this field to keep sparse happy.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/hwtracing/stm/stm.h b/drivers/hwtracing/stm/stm.h
index cf33bf976abe..95ece0292c99 100644
--- a/drivers/hwtracing/stm/stm.h
+++ b/drivers/hwtracing/stm/stm.h
@@ -74,7 +74,7 @@ struct stm_source_device {
         struct device           dev;
         struct stm_source_data  *data;
         spinlock_t              link_lock;
-        struct stm_device       *link;
+        struct stm_device __rcu *link;
         struct list_head        link_entry;
         /* one output per stm_source device */
         struct stp_policy_node  *policy_node;