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drm/radeon: avoid crash if VM command submission isn't available

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Signed-off-by: Christian König <[email protected]>
CC: [email protected]
This commit is contained in:
Christian König 2014-05-21 17:43:59 +02:00
commit 60a445405a
1 changed files with 11 additions and 4 deletions
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15
drivers/gpu/drm/radeon/radeon_cs.c
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@ -342,10 +342,17 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
return -EINVAL;
/* we only support VM on some SI+ rings */
if ((p->rdev->asic->ring[p->ring]->cs_parse == NULL) &&
((p->cs_flags & RADEON_CS_USE_VM) == 0)) {
DRM_ERROR("Ring %d requires VM!\n", p->ring);
return -EINVAL;
if ((p->cs_flags & RADEON_CS_USE_VM) == 0) {
if (p->rdev->asic->ring[p->ring]->cs_parse == NULL) {
DRM_ERROR("Ring %d requires VM!\n", p->ring);
return -EINVAL;
}
} else {
if (p->rdev->asic->ring[p->ring]->ib_parse == NULL) {
DRM_ERROR("VM not supported on ring %d!\n",
p->ring);
return -EINVAL;
}
}
}