[PATCH 06/15] nvme: add Clang context annotations for nvme_dev::shutdown_lock

[Nilay Shroff]

nvme_setup_io_queues_trylock() conditionally acquires dev->shutdown_lock
using mutex_trylock(). The function returns 0 when the lock is
successfully acquired and a negative error code otherwise.

Annotate the function with __cond_acquires(0, &dev->shutdown_lock) so
that Clang's lock context analysis can track the lock state based on
the return value and verify correct lock usage at call sites.

Signed-off-by: Nilay Shroff <nilay at linux.ibm.com>
---
 drivers/nvme/host/pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index b5f846200678..894da63127a7 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2194,6 +2194,7 @@ static void nvme_init_queue(struct nvme_queue *nvmeq, u16 qid)
  * Try getting shutdown_lock while setting up IO queues.
  */
 static int nvme_setup_io_queues_trylock(struct nvme_dev *dev)
+	__cond_acquires(0, &dev->shutdown_lock)
 {
 	/*
 	 * Give up if the lock is being held by nvme_dev_disable.
-- 
2.53.0