diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2010-12-03 14:37:22 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-12-08 09:35:05 +1000 |
| commit | 8961d52d4cc52edf5672f8f2712c57162b736793 (patch) | |
| tree | bb70f07b4b6097a2c71aada6570b3cd15a74dc09 | |
| parent | dd7cc55a258400440aff5869d3e1e111142297cd (diff) | |
drm/radeon/kms: fix vram base calculation on rs780/rs880
Avoid overflowing a 32 bit value.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/r600.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index a3552594ccc..a322d4f647b 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1195,8 +1195,10 @@ void r600_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc) mc->vram_end, mc->real_vram_size >> 20); } else { u64 base = 0; - if (rdev->flags & RADEON_IS_IGP) - base = (RREG32(MC_VM_FB_LOCATION) & 0xFFFF) << 24; + if (rdev->flags & RADEON_IS_IGP) { + base = RREG32(MC_VM_FB_LOCATION) & 0xFFFF; + base <<= 24; + } radeon_vram_location(rdev, &rdev->mc, base); rdev->mc.gtt_base_align = 0; radeon_gtt_location(rdev, mc); |