drm/amdkfd: debugfs hang_hws skip GPU with MES

[ Upstream commit fe9d0061c413f8fb8c529b18b592b04170850ded ]

debugfs hang_hws is used by GPU reset test with HWS, for MES this crash
the kernel with NULL pointer access because dqm->packet_mgr is not setup
for MES path.

Skip GPU with MES for now, MES hang_hws debugfs interface will be
supported later.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Kent Russell <kent.russell@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@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.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 9d0b0bf70ad1eaafa98ac2055a26726ce7259127..2786d47961e075e835606c901a60d5c78312682e 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -1388,6 +1388,11 @@ int kfd_debugfs_hang_hws(struct kfd_node *dev)
                return -EINVAL;
        }
 
+       if (dev->kfd->shared_resources.enable_mes) {
+               dev_err(dev->adev->dev, "Inducing MES hang is not supported\n");
+               return -EINVAL;
+       }
+
        return dqm_debugfs_hang_hws(dev->dqm);
 }