drm/amdgpu/gfx12: return early in preempt_ib()

When MES is enabled KIQ is not available.  Return an error
when someone uses the debugfs preempt test interface in
that case.

Acked-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
index 54059cbcfc08982c1c3e57ec86f96f5c77556527..6f700800f346bb121cb07191686834bc4c733634 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -4501,6 +4501,9 @@ static int gfx_v12_0_ring_preempt_ib(struct amdgpu_ring *ring)
        struct amdgpu_ring *kiq_ring = &kiq->ring;
        unsigned long flags;
 
+       if (adev->enable_mes)
+               return -EINVAL;
+
        if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)
                return -EINVAL;