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| author | Alex Deucher <alexander.deucher@amd.com> | 2012-05-30 10:09:30 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-10 00:36:13 +0900 |
| commit | 44920b1991d9182bc3ff8f90df71b0e5311448dc (patch) | |
| tree | 9c690c224456a44b0d1f9dd27afda1afe55f07cf /drivers | |
| parent | 1e98ce80a4493f32b44f227d6050318462ca9d5d (diff) | |
| download | linux-3.10-44920b1991d9182bc3ff8f90df71b0e5311448dc.tar.gz linux-3.10-44920b1991d9182bc3ff8f90df71b0e5311448dc.tar.bz2 linux-3.10-44920b1991d9182bc3ff8f90df71b0e5311448dc.zip | |
drm/radeon: fix regression in UMS CS ioctl
commit 9b00147d9f2ba137ce74b66b768a8312be0b6781 upstream.
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>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_cs.c | 31 |
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 5cac8327833..2418cf6da1c 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -158,6 +158,7 @@ static int radeon_cs_sync_rings(struct radeon_cs_parser *p) return 0; } +/* 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; @@ -252,22 +253,24 @@ 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) && |