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authorAlex Deucher <alexander.deucher@amd.com>2012-05-30 10:09:30 -0400
committerDave Airlie <airlied@redhat.com>2012-06-01 17:00:21 +0100
commit9b00147d9f2ba137ce74b66b768a8312be0b6781 (patch)
treebc37f50072056deb5bfa586db8aeae67cd20afcf /drivers/gpu
parent0824db38e515644f8d1bfd64adbd7cb2c6ea7c62 (diff)
drm/radeon: fix regression in UMS CS ioctl
radeon_cs_parser_init is called by both the legacy UMS CS ioctl and the KMS CS ioctl. Protect KMS specific pieces of the code by checking that rdev is not NULL. Reported-by: Michael Burian <michael.burian@sbg.at> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/radeon_cs.c31
1 files changed, 17 insertions, 14 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 0137689ed46..142f89462aa 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -147,6 +147,7 @@ static int radeon_cs_sync_rings(struct radeon_cs_parser *p)
sync_to_ring, p->ring);
}
+/* XXX: note that this is called from the legacy UMS CS ioctl as well */
int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
{
struct drm_radeon_cs *cs = data;
@@ -245,22 +246,24 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
}
}
- if ((p->cs_flags & RADEON_CS_USE_VM) &&
- !p->rdev->vm_manager.enabled) {
- DRM_ERROR("VM not active on asic!\n");
- return -EINVAL;
- }
-
- /* we only support VM on SI+ */
- if ((p->rdev->family >= CHIP_TAHITI) &&
- ((p->cs_flags & RADEON_CS_USE_VM) == 0)) {
- DRM_ERROR("VM required on SI+!\n");
- return -EINVAL;
- }
+ /* these are KMS only */
+ if (p->rdev) {
+ if ((p->cs_flags & RADEON_CS_USE_VM) &&
+ !p->rdev->vm_manager.enabled) {
+ DRM_ERROR("VM not active on asic!\n");
+ return -EINVAL;
+ }
- if (radeon_cs_get_ring(p, ring, priority))
- return -EINVAL;
+ /* we only support VM on SI+ */
+ if ((p->rdev->family >= CHIP_TAHITI) &&
+ ((p->cs_flags & RADEON_CS_USE_VM) == 0)) {
+ DRM_ERROR("VM required on SI+!\n");
+ return -EINVAL;
+ }
+ if (radeon_cs_get_ring(p, ring, priority))
+ return -EINVAL;
+ }
/* deal with non-vm */
if ((p->chunk_ib_idx != -1) &&