drm/amdkfd: fix a memory leak issue

[ Upstream commit 087d764159996ae378b08c0fdd557537adfd6899 ]

In the resume stage of GPU recovery, start_cpsch will call pm_init
which set pm->allocated as false, cause the next pm_release_ib has
no chance to release ib memory.

Add pm_release_ib in stop_cpsch which will be called in the suspend
stage of GPU recovery.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index aa1e0f0550835eea73f72415be2ddbb8f3fae6ca..6b00cdbb083687dd56148cf5747c59e881e21d6a 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -1177,6 +1177,8 @@ static int stop_cpsch(struct device_queue_manager *dqm)
        dqm->sched_running = false;
        dqm_unlock(dqm);
 
+       pm_release_ib(&dqm->packets);
+
        kfd_gtt_sa_free(dqm->dev, dqm->fence_mem);
        pm_uninit(&dqm->packets, hanging);