[PATCH 3/3] drm/amdkfd: Don't create BUG due to incorrect user parameter

[Oded Gabbay]

This patch changes a BUG_ON() statement to pr_debug, in case the user tries to
update a non-existing queue.

Signed-off-by: Oded Gabbay <oded.gabbay at amd.com>
Reviewed-by: Ben Goz <ben.goz at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index f37cf5e..2fda1927 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -315,7 +315,11 @@ int pqm_update_queue(struct process_queue_manager *pqm, 
unsigned int qid,
        BUG_ON(!pqm);

        pqn = get_queue_by_qid(pqm, qid);
-       BUG_ON(!pqn);
+       if (!pqn) {
+               pr_debug("amdkfd: No queue %d exists for update operation\n",
+                               qid);
+               return -EFAULT;
+       }

        pqn->q->properties.queue_address = p->queue_address;
        pqn->q->properties.queue_size = p->queue_size;
-- 
1.9.1