drm/radeon: avoid crash if VM command submission isn't available
Signed-off-by: Christian König <christian.koenig@amd.com> CC: stable@vger.kernel.org
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@ -342,10 +342,17 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
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return -EINVAL;
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/* we only support VM on some SI+ rings */
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if ((p->rdev->asic->ring[p->ring]->cs_parse == NULL) &&
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((p->cs_flags & RADEON_CS_USE_VM) == 0)) {
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DRM_ERROR("Ring %d requires VM!\n", p->ring);
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return -EINVAL;
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if ((p->cs_flags & RADEON_CS_USE_VM) == 0) {
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if (p->rdev->asic->ring[p->ring]->cs_parse == NULL) {
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DRM_ERROR("Ring %d requires VM!\n", p->ring);
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return -EINVAL;
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}
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} else {
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if (p->rdev->asic->ring[p->ring]->ib_parse == NULL) {
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DRM_ERROR("VM not supported on ring %d!\n",
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p->ring);
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return -EINVAL;
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}
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}
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}
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